| OHIRA Masataka |  |
| Faculty of Science and Engineering Department of Electronics | |
| Professor |
Last Updated :2025/06/15
Researcher Profile and Settings
researchmap
Research Interests
- 電波
- Electromagnetic wave
- High-frequency circuits
- Wireless communications
- Frequency-selective surfaces
- Optimization
- Electromagnetic analysis
- Antennas
- Filters
- Millimeter wave
- Microwave
- Neural Network
- Genetic algorithm
- Reflectarray
- Transmitarray
Research Areas
- Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Communication and network engineering / Antennas
- Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Electronic devices and equipment / Microwave/Millimeter-wave devices
Research Experience
- Doshisha University, Graduate School of Science and Engineering, Professor, 2025/04 - Today
- Doshisha University, Faculty of Science and Engineering, Professor, 2024/04 - 2025/03
- Saitama University, Associate Professor, 2014/04 - 2024/03
- Saitama University, Assistant Professor, 2010/04 - 2014/03
- ATR, Visiting Researcher, 2011/07 - 2013/03
- ATR Wave Engineering Laboratories, Visiting Researcher, 2010/06 - 2011/03
- ATR Wave Engineering Laboratories, Researcher, 2006/04 - 2010/03
Education
- Doshisha University, Graduate School of Engineering, Dr., 電気工学専攻 博士課程後期, 2003/04 - 2006/03
- Doshisha University, Graduate School of Engineering, 電気工学専攻 博士課程前期, 2001/04 - 2003/03
- Doshisha University, Faculty of Engineering, Department of Electronics, 1997/04 - 2001/03
Degree
Association Memberships
- IEEE
- The Institute of Electronical Engineers
- The Institute of Electronics, Information and Communication Engineers
- European Microwave Association
Committee Memberships
- Member, 2025/05 - Today, IEICE Technical Committee on Microwaves, Society
- Member, 2025/04 - Today, APMC National Committee, Society
- Technical Committee Chair, 2025/01 - Today, IEEE MTT-S Kansai Chapter, Society
- TPC Member, 2024/11 - Today, RFIT2025 Steering Committee, Society
- 1号委員, 2024/04 - Today, 電気学会 電磁界理論技術委員会
- Vice Chair, 2024/03 - Today, APMC 2026実行委員会, Society
- Workshop Vice Chair, 2024/03 - Today, RFIT2025実行委員会, Society
- アドホック幹事, 2023/06 - Today, 電子情報通信学会エレクトロニクスソサイエティ, Society
- Technical Program Member, 2024/05 - 2024/10, TJMW2024 Steering Comittee, Society
- 編集出版幹事, 2022/06 - 2024/07, 電子情報通信学会エレクトロニクスソサイエティ, Society
- Vice Chair, 2023/01 - 2024/03, IEEE MTT-S Japan Chapter, Society
- 学生会顧問, 2016/04 - 2024/03, 電子情報通信学会東京支部, Society
- TPC, 2023/04 - 2023/12, TJMW2023 Steering Committee, Society
- Member, 2015/05 - 2023/12, IEEE MTT-S Technical Coordinating Committee MTT-18, Society
- Technical Program Committee Chair, 2019/05 - 2023/03, APMC 2022 Steering Committee, Society
- 総務幹事, 2019/04 - 2023/03, APMC国内委員会, Society
- Secretary, 2020/06 - 2022/06, IEICE Technical Committee on Microwaves, Society
- Secretary, 2021/06 - 2021/12, 2nd TJMW Student Workshop, Society
- Publicity Committee Member, 2021/02 - 2021/12, MWE 2021 Steering Committee, Society
- IEICE Electronics Express編集委員, 2018/07 - 2021/06, 電子情報通信学会, Society
- 広報委員, 2020/02 - 2020/12, MWE 2020実行委員会, Society
- Chair of General Affair Committee, 2020/02 - 2020/12, MWE 2020 Steering Committee, Society
- 専門委員, 2016/05 - 2020/05, 電子情報通信学会マイクロ波専門研究会, Society
- 広報委員, 2019/01 - 2019/12, MWE 2019実行委員会, Society
- Secretary, 2018/01 - 2019/12, IEEE MTT-S Japan Chapter, Society
- Publicity & Web Master Chairs, 2019/02 - 2019/06, TJMW2019実行委員会, Society
- 総務委員長, 2016/04 - 2019/03, APMC 2018実行委員会, Society
- 広報委員, 2018/03 - 2018/12, MWE 2018実行委員会, Society
- TPC/Publication Co-Chair, 2017/12 - 2018/06, TJMW2018実行委員会, Society
- 広報委員, 2017/02 - 2017/12, MWE 2017, Society
- 編集委員, 2016/12 - 2017/12, 電子情報通信学会和文論文誌C特集号, Society
- TPC/Publication Co-Chair, 2017/01 - 2017/06, TJMW2017, Society
- 広報委員, 2016/02 - 2016/12, MWE 2016, Society
- 編集幹事, 2016/02 - 2016/10, IEICE英文論文誌小特集編集委員会, Society
- TPC/Publication Co-Chair, 2015/12 - 2016/06, TJMW2016, Society
- TPC委員／広報委員, 2015/04 - 2016/01, MWE2015実行委員会, Society
- GOLD/Student Committee Chair, 2014/01 - 2015/12, IEEE MTT-S Japan Chapter, Society
- TPC Member, 2015/07 - 2015/11, ISAP2015, Society
- TPC Subcommittee Chair, 2015/04 - 2015/08, RFIT2015, Society
- TPC Vice Chair, 2015/03 - 2015/08, VJMW2015, Society
- Secretary, 2015/03 - 2015/08, TJMW2015, Society
- 幹事補佐, 2013/05 - 2015/05, 電子情報通信学会マイクロ波研究専門委員会, Society
- 総務副委員長, 2013/02 - 2015/02, APMC2014実行委員会, Society
- 和文誌特集号編集委員, 2014/01 - 2014/12, 電子情報通信学会, Society
- TPC Secretary, 2014/04 - 2014/11, TJMW 2014, Society
- TPC Subcommittee Chair, 2014/05 - 2014/08, APMC 2014, Society
- TPC委員, 2013/02 - 2014/01, MWE2013実行委員会, Society
- Student Encouragement Member, 2013/03 - 2013/12, TJMW2013実行委員会, Society
- TPC委員, 2012/04 - 2012/09, TJMW2012, Society
- 実行委員会プログラム委員（セッションオーガナイザ／セッション座長）, 2011/03 - 2011/12, MWE2011, Society
- 専門委員, 2009/05 - 2010/05, 電子情報通信学会アンテナ・伝播研究会, Society
- Young Engineers' Committee Chair, 2008/04 - 2009/12, IEEE MTT-S Kansai Chapter, Society
Awards
- 活動功労表彰
Mar. 2023, 電子情報通信学会エレクトロニクスソサイエティ - APMC 2022 Prize
Dec. 2022 - ELEX Editorial Contribution Award
Jun. 2020, IEICE - Best Paper Award
Jun. 2018, IEICE - エレクトロニクスソサイエティ活動功労表彰
Mar. 2016, 電子情報通信学会 - Michiyuki Uenohara Memorial Award
Dec. 2014 - IEEE MTT-S Japan Young Engineer Award
Dec. 2014 - IEEE AP-S Japan Chapter Young Engineer Award
Dec. 2012 - Microwave Prize
Apr. 2011, CJMW2011 (China-Japan Microwave Conference), International society - 功労賞
Jun. 2010, 電子情報通信学会 アンテナ・伝播研究会, Others - 学生研究奨励賞
Feb. 2006, IEEE関西支部, Japan society - 連合大会奨励賞
Apr. 2005, 電気関係学会関西支部, Japan society - 学術奨励賞
Mar. 2005, 電子情報通信学会, Japan society - 第1回学生研究発表会優秀賞
Sep. 2003, 電子情報通信学会マイクロ波研究会, Japan society
Published Papers
- Dual-band orthogonally polarized single-layer reflectarray with region segmentation for mutual coupling suppression
H. Tanaka; M. Ohira; H. Deguchi; M. Tsuji; Y. Makino
The Harris science review of Doshisha University, 66(1) 53 - 61, Apr. 2025, Research institution - Optimized Mode Coefficients of Multimode Horn with Square Aperture Achieving Constant Beamwidths for Multiband Use
Hiroyuki DEGUCHI; Masataka OHIRA; Mikio TSUJI
IEICE Transactions on Electronics, Institute of Electronics, Information and Communications Engineers (IEICE), E108.C(4) 201 - 205, 01 Apr. 2025, Scientific journal - Accurate design of a novel high-performance 11-pole triple-mode dielectric resonator BPF with fully controllable multiple transmission zeros for mobile communication base stations
Fan Liu; Zhewang Ma; Masataka Ohira; Dongchun Qiao; Guosheng Pu; Masaru Ichikawa
Science China Information Sciences, Springer Science and Business Media LLC, 68(2), 10 Jan. 2025, Scientific journal - Spline-profile horn antennas optimized with dual conical modes
Hiroyuki Deguchi; Masataka Ohira
The Harris science review of Doshisha University, 65(4) 163 - 173, Jan. 2025, Research institution - A circularly polarized wideband filtering antenna having flat in-band gain and large out-of-band rejection
M. Ohira; K. Sakiyama; Z. Ma; H. Deguchi
Asia-Pacific Microwave Conf. (APMC 2024), Nov. 2024, International conference proceedings - Accurate Design of Higher-Performance Bandpass Filters Using Multi-Mode Dielectric Resonators for Wireless Communication Base Stations
F. Liu; Z. Ma; M. Ohira; D. Qiao; G. Pu; M. Ichikawa
Asia-Pacific Microwave Conf. (APMC 2024), Nov. 2024, International conference proceedings - Precise Design of an 11-Pole TM010 Mode Dielectric Resonator BPF with Novel Capacitive Coupling Structures
Fan LIU; Zhewang MA; Masataka OHIRA; Dongchun QIAO; Guosheng PU; Masaru ICHIKAWA
IEICE Transactions on Electronics, Institute of Electronics, Information and Communications Engineers (IEICE), E107.C(11) 472 - 478, 01 Nov. 2024, Scientific journal - Analytic Formula for Mode Coefficients of a Multimode Circular Horn with Axial Symmetry, High Aperture Efficiency, and Low Cross-Polarization
Hiroyuki Deguchi; Masataka Ohira
THE HARRIS SCIENCE REVIEW OF DOSHISHA UNIVERSITY, 65(3) 103 - 114, Oct. 2024, Research institution - Arbitrarily-shaped dual-linear polarization reflectarray elements independently controlled for dual-band applications
Y. Makino; H. Tanaka; H. Deguchi; M. Ohira
2024 IEEE Int. Symp. on Antennas and Propagation and ITNC-USNC-URSI Radio Science Meeting, Jul. 2024, International conference proceedings - Multi-band 7.1/8.5/20/30-GHz horn antenna with spline-taper and coaxial-groove walls
H. Nanno; H. Nishida; H. Deguchi; M. Ohira
2024 IEEE Int. Symp. on Antennas and Propagation and ITNC-USNC-URSI Radio Science Meeting, 124(95(EMT2024 6-58)), Jul. 2024 - Multimode transmission equation using line-integral formulation for taper waveguide
Hiroyuki Deguchi; Masataka Ohira
The Harris science review of Doshisha University, 65(2) 54 - 63, Jul. 2024, Research institution - 比帯域幅30%以上を有する無給電素子装荷広帯域フィルタリングアンテナの設計及び実験的検証
崎山拳; 大平昌敬; 馬哲旺
電子情報通信学会和文論文誌(C), J107-C(3) 77 - 86, Mar. 2024, Scientific journal - A Deep-Reinforcement-Learning Assisted Microstrip BPF Design Approach for Multiple Specifications
Masataka Ohira
Asia-pacific Microwave Conference, Apmc, Dec. 2023, Scientific journal - A 28 GHz Band Compact LTCC Filtering Antenna with Extracted-Pole Unit for Dual Polarization
Kaoru Sudo; Ryo Mikase; Yoshinori Taguchi; Koichi Takizawa; Yosuke Sato; Kazushige Sato; Hisao Hayafuji; Masataka Ohira
IEICE Transactions on Electronics, Institute of Electronics, Information and Communications Engineers (IEICE), E106-C(11) 635 - 642, Nov. 2023, Scientific journal - Novel Combined Coaxial and Dual-Mode Dielectric Resonator BPFs With Symmetric and Asymmetric Responses Using Virtual Negative Couplings
Fan Liu; Zhewang Ma; Masataka Ohira; Dongchun Qiao; Guosheng Pu; Masaru Ichikawa
IEEE Transactions on Microwave Theory and Techniques, Institute of Electrical and Electronics Engineers (IEEE), 71(11) 4947 - 4956, Nov. 2023, Scientific journal - Synthesis Design of Equal-Ripple Wideband Balanced Bandpass Filter Based on Coupled-Lines and Branch-Lines
Yuxi Jiang; Pin Wen; Zhewang Ma; Shuangshuang Zhu; Chaoqun Zhang; Fan Liu; Masataka Ohira
2023 International Conference on Microwave and Millimeter Wave Technology (ICMMT), IEEE, 14 May 2023, International conference proceedings - Special Section on Microwave and Millimeter-Wave Technologies
Ohira, M.
IEICE Transactions on Electronics, E106.C(11), 2023, Scientific journal - A Compact Microstrip Transversal Coupling Reconfigurable Bandpass Filter with Highly Variable Center Frequency, Bandwidth, and Transmission Zeros
大平昌敬; 橋本周磨; MA Zhewang
電子情報通信学会論文誌 C(Web), J106-C(1) 46 - 54, Jan. 2023 - Design of Parasitic-Element Loaded Wideband Filtering Antenna with Unidirectional Radiation Pattern over 30% Frequency Bandwidth
崎山拳; 大平昌敬; MA Zhewang
電子情報通信学会技術研究報告(Web), 122(370(ED2022 86-97)) 312 - 314, 2023 - Synthesis design of wideband differential bandpass filter with intrinsic cm noise rejection using branch-line configuration
P. Wen; Z. Ma; S. Zhu; F. Liu; M. Ohira
Proc. of 2022 Asia-Pacific Microwave Conf., 464 - 466, Nov. 2022, International conference proceedings - Design of microstrip filtering antenna with transmission zeros using even/odd-symmetric electric field distributions
R. Kono; M. Ohira; Z. Ma
Proc. of 2022 Asia-Pacific Microwave Conf., 521 - 523, Nov. 2022, International conference proceedings - A 60-GHz band SIW inline-type filtering antenna with flat in-band gain and two transmission zeros
M. Ohira; M. Hoshino; Z. Ma
Proc. of 2022 Asia-Pacific Microwave Conf., 518 - 520, Nov. 2022, International conference proceedings - A 28 GHz band dual-polarized LTCC filtering antenna with extracted-pole unit
K. Sudo; R. Mikase; Y. Taguchi; K. Takizawa; Y. Sato; K. Sato; H. Hayafuji; M. Ohira
Proc. of 2022 Asia-Pacific Microwave Conf., 306 - 308, Nov. 2022, International conference proceedings - Design of a Compact Triple-Mode Dielectric Resonator BPF with Wide Spurious-Free Performance
Liu, F.; Ma, Z.; Zhang, W.; Ohira, M.; Qiao, D.; Pu, G.; Ichikawa, M.
IEICE Transactions on Electronics, Institute of Electronics, Information and Communications Engineers (IEICE), E105.C(11) 660 - 666, 01 Nov. 2022, Scientific journal - Development of robotic system without wired connections at joints by wireless communication and wireless power transfer
K. Serizawa; S. Shimizu; H. Sekiya; M. Ohira
IEEE Int. Symp. on Personal, Indoor and Mobile Radio Comm., (IEEE PIMRC2022), Sep. 2022, International conference proceedings - Neural-network assisted automatic design of microstrip cross-coupled bandpass filter
M. Ohira; A. Yamashita; Z. Ma
2022 URSI-Japan Radio Science Meeting (URSI-JRSM 2022), 84 , Sep. 2022, International conference proceedings - Design of wideband impedance transformers with different number and different mounting positions of the shunt stubs
Zhang, W.; Ma, Z.; Liu, F.; Ohira, M.; Wang, X.
IEICE Electronics Express, Institute of Electronics, Information and Communications Engineers (IEICE), 19(5), Mar. 2022, Scientific journal - High selectivity balanced-to-unbalanced filtering power divider with stub-loaded dual-mode resonators
P. Wen; Z. Ma; M. Ohira
Proc. of Asia-Pacific Microwave Conf., Dec. 2021, International conference proceedings - A PARAMETRIC SHAPE OPTIMIZATION USING THE NYSTR ̈OM-BOUNDARY INTEGRAL EQUATION METHOD FOR COMPLEX EIGENVALUES OF ELECTROMAGNETIC SCATTERING PROBLEMS IN 2D
Ryota Misawa; Yujiro Takahashi; Zhewang Ma; Masataka Ohira
Transactions of the Japan Society for Computational Methods in Engineering, 21 71 - 79, Dec. 2021, Scientific journal - A novel design of wideband impedance transformers with applications to wideband BPFs
W. Zhang; Z. Ma; F. Liu; M. Ohira; X. Wang
IEEE Int. Workshop on Electromagnetics: Applications and Student Innovation Competition, Nov. 2021, International conference proceedings - Design of wideband bandpass filter with equal-ripple attenuation in the passband
P. Wen; Z. Ma; S. Zhu; F. Liu; M. Ohira
IEEE Int. Workshop on Electromagnetics: Applications and Student Innovation Competition, Nov. 2021, International conference proceedings - Highly Selective and Controllable Superconducting Dual-Band Differential Filter With Attractive Common-Mode Rejection
Baoping Ren; Xuehui Guan; Haiwen Liu; Zhewang Ma; Masataka Ohira
IEEE Transactions on Circuits and Systems II: Express Briefs, Institute of Electrical and Electronics Engineers (IEEE), 1 - 1, Nov. 2021, Scientific journal - A novel compact wideband microstripwilkinson power divider
Weihao Zhang; Zhewang Ma; Fan Liu; Masataka Ohira
IEICE Electronics Express, Institute of Electronics Information Communication Engineers, 18(19) 1 - 6, 10 Oct. 2021, Scientific journal - A Filter-Technique Aided Design of 60-GHz Band Planar Single-feed Dual-polarized Antenna
M. Ohira; Z. Ma
2020 International Symposium on Antennas and Propagation (ISAP2020), 91 - 92, Jan. 2021, International conference proceedings - A microstrip box-type coupling bandpass filter using even/odd-symmetric electric field distributions of half-wavelength resonator
M. Ono; M. Ohira; Z. Ma
Proc. of Asia-Pacific Microwave Conf., 415 - 417, Dec. 2020, International conference proceedings - Design of an 11-Pole BPF Using Cascaded Triplets of TM010 Mode Dielectric Ring Resonators
F. Liu; Z. Ma; W. Zhang; M. Ohira; D. Qio; G. Pu; M. Ichikawa
Proc. of IEEE MTT-S Int. Conf. on Numerical Electromagnetic and Multiphysics Modeling and Opt., Dec. 2020, International conference proceedings - A tunable filtering antenna with frequency selectivity/tunability of constant absolute bandwidth and radiation characteristic
M. Ohira; T. Soma; Z. Ma
IEICE Trans. Electron. (Japanese Ed.), J103-C(9) 368 - 379, Sep. 2020 - Design and Experiment of Quasi Millimeter-wave Band Box-type Coupling SIWBandpass Filter with Transmission Zeros Using TE102 Mode
Y. Shimizu; M. Ohira; Z. Ma
IEICE Trans. Electron. Japanese Ed., J103-C(1) 24 - 33, Jan. 2020 - Multi-isolation resistors in coupled line section for wilkinson power divider and its optimization
X. Wang; Z. Ma; M. Ohira; C.-P. Chen
Proc. of Asia-Pacific Microwave Conf. (APMC2019), 350 - 352, Dec. 2019, International conference proceedings - A new microstrip reconfigurable transversal coupling bandpass filter with highly controllable number and positions of transmission zeros
M. Ohira; S. Hashimoto; Z. Ma
Proc. of Asia-Pacific Microwave Conf. (APMC2019), 1963 - 1965, Dec. 2019, International conference proceedings - Balanced-to-unbalanced filtering power divider with stub-loaded dual-mode resonators
P. Wen; Z. Ma; S. Zhu; H. Liu; B. Ren; M. Ohira
Proc. of Int. Symp. on Antennas and Propagat. (ISAP 2019), Oct. 2019, International conference proceedings - A compact wideband bandstop filter using microstrip ring structure
T. Tabei; Z. Ma; M. Ohira
Proc. of 23rd Int. Conf. on Applied Electromagnetics and Comm. (ICECOM 2019), Oct. 2019, International conference proceedings - Synthesis Theory of Ultra-Wideband Bandpass Transformer and its Wilkinson Power Divider Application with Perfect in-Band Reflection/Isolation
Wang, X.; Ma, Z.; Xie, T.; Ohira, M.; Chen, C.-P.; Lu, G.
IEEE Transactions on Microwave Theory and Techniques, Institute of Electrical and Electronics Engineers ({IEEE}), 67(8) 3377 - 3390, Aug. 2019, Scientific journal - A fully reconfigurable microstrip transversal resonator array bandpass filter,
M. Ohira; S. Hashimoto; Z. Ma
Proc. of 2019 Thailand-Japan MicroWave (TJMW2019), Jun. 2019, International conference proceedings - Design of compact wideband bandstop filters using microstrip ring structures
T. Tabei; Z. Ma; M. Ohira
Proc. of 2019 Thailand-Japan MicroWave (TJMW2019), Jun. 2019, International conference proceedings - Two types of dual-band bandpass filtering Wilkinson power divider with microstrip composite resonators
Nan Zhang; Xiaolong Wang; Naoki Kimata; Zhewang Ma; Masataka Ohira
2019 International Conference on Microwave and Millimeter Wave Technology (ICMMT), May 2019, International conference proceedings - Compact multi-band differential bandpass filters using microstrip multi-moderesonators
B. Ren; Z. Ma; H. Liu; X. Guan; P. Wen; M. Ohira
Proc. of IEEE MTT-S Int. Wireless Symp., May 2019, International conference proceedings - Dual-Band Filtering Power Divider Using Dual-Resonance Resonators with Ultrawide Stopband and Good Isolation
Wen, P.; Ma, Z.; Liu, H.; Zhu, S.; Ren, B.; Song, Y.; Wang, X.; Ohira, M.
IEEE Microwave and Wireless Components Letters, Institute of Electrical and Electronics Engineers ({IEEE}), 29(2) 101 - 103, Feb. 2019, Scientific journal - Differential Dual-Band Superconducting Bandpass Filter Using Multimode Square Ring Loaded Resonators with Controllable Bandwidths
Ren, B.; Ma, Z.; Liu, H.; Guan, X.; Wang, X.; Wen, P.; Ohira, M.
IEEE Transactions on Microwave Theory and Techniques, Institute of Electrical and Electronics Engineers ({IEEE}), 67(2) 1 - 12, Feb. 2019, Scientific journal - Compact dual-band bandpass filter and diplexer using hybrid resonant structure with independently controllable dual passbands
Ren, B.; Liu, H.; Ma, Z.; Ohira, M.; Guan, X.; Wen, P.; Wang, X.
International Journal of RF and Microwave Computer-Aided Engineering, 29(1), Jan. 2019, Scientific journal - Coupling-Matrix-Based Systematic Design of Single-DC-Bias-Controlled Microstrip Higher Order Tunable Bandpass Filters with Constant Absolute Bandwidth and Transmission Zeros
Ohira, M.; Hashimoto, S.; Ma, Z.; Wang, X.
IEEE Transactions on Microwave Theory and Techniques, Institute of Electrical and Electronics Engineers ({IEEE}), 67(1) 118 - 128, Jan. 2019, Scientific journal - A High-order Cul-de-Sac Coupling Bandpass Filter Design Using Even/Odd-mode Stepped Impedance Resonators
御家瀬亮; 大平昌敬; MA Zhewang
電子情報通信学会技術研究報告, 電子情報通信学会, 118(361) 7 - 12, 13 Dec. 2018 - Design of balanced dual-band superconducting bandpass filter with high selectivity and deep common-mode suppression
B. Ren; Z. Ma; H. Liu; M. Ohira; X. Guan; P. Wen
Proc. of 2018 Asia-Pacific Microwave Conf. (APMC 2018), 423 - 425, Nov. 2018, International conference proceedings - Novel compact dual-band BPF using stub-loaded shorted stepped-impedance resonators
P. Wen; Z. Ma; H. Liu; S. Zhu; M. Ohira; C. Wang; X. Guan; B. Ren
Proc. of 2018 Asia-Pacific Microwave Conf. (APMC 2018), 22 - 24, Nov. 2018, International conference proceedings - Automated microstrip bandpass filter design using feedforward and inverse models of neural network
M. Ohira; A. Yamashita; Z. Ma; X. Wang
Proc. of 2018 Asia-Pacific Microwave Conf. (APMC 2018), 1292 - 1294, Nov. 2018, International conference proceedings - Compact tunable Wilkinson power divider with simple structure
X. Wang; Z. Ma; M. Ohira; C.-P. Chen; T. Anada
Proc. of 2018 Europ. Microwave Conf., 41 - 44, Sep. 2018, International conference proceedings - A tuning-less design method of microwave bandpass filters using neural network based inverse model
A. Yamashita; Z. Ma; M. Ohira
IEICE Trans. Electron. (Japanese Ed.), J101-C(6) 327 - 335, Aug. 2018 - Design of microstrip wideband filtering antenna using network synthesis theory of wideband chebyshev filter
M. Ohira; K. Sato; Z. Ma
Proc. of 2018 Thailand-Japan MicroWave (TJMW2018), Jun. 2018, International conference proceedings - A novel microstrip symmetric diagonal cross-coupling quadruplet bandpass filter using even/odd-mode stepped impedance resonators
R. Mikase; M. Ohira; Z. Ma; X. Wang
Digest of 2018 IEEE MTT-S International Microwave Symposium, 712 - 715, Jun. 2018, International conference proceedings - A new microstrip bandstop filter for fully canonical Cul-de-Sac coupling configuration
M. Ohira; M. Kanomata; Z. Ma; X. Wang
Digest of 2018 IEEE MTT-S International Microwave Symposium, 708 - 711, Jun. 2018, International conference proceedings - Compact Dual-Band Differential Bandpass Filter Using Quadruple-Mode Stepped-Impedance Square Ring Loaded Resonators
Baoping Ren; Haiwen Liu; Zhewang Ma; Masataka Ohira; Pin Wen; Xiaolong Wang; Xuehui Guan
IEEE Access, Institute of Electrical and Electronics Engineers Inc., 6(6) 21850 - 21858, 19 Apr. 2018, Scientific journal - A miniaturized dual-band bandpass filter using composite resonators with flexible frequency ratio
Pin Wen; Zhewang Ma; Haiwen Liu; Shuangshuang Zhu; Baoping Ren; Xiaolong Wang; Masataka Ohira
IEICE Electronics Express, Institute of Electronics Information Communication Engineers, 15(5), 10 Mar. 2018, Scientific journal - Theory and Experiment of Two-Section Two-Resistor Wilkinson Power Divider with Two Arbitrary Frequency Bands
Xiaolong Wang; Zhewang Ma; Masataka Ohira
IEEE Transactions on Microwave Theory and Techniques, Institute of Electrical and Electronics Engineers Inc., 66(3) 1291 - 1300, 01 Mar. 2018, Scientific journal - Differential dual-band filter with flexible frequency ratio using H-shaped composite resonator for SCDMA and LTE applications
P. Wen; Z. Ma; M. Ohira; X. Wang; H. Liu; B. Ren; X. Guan
Proc. of 2017 IEEE Electrical Design of Advanced Packaging and Systems (EDAPS 2017), Dec. 2017, International conference proceedings - An improved coupling-matrix extraction method of microwave bandpass filters with de-embedding technique for transmission loss of input/output lines
R. Tomita; M. Ohira; Z. Ma; X. Wang
IEICE Trans. on Electron. (Japanese Ed.), 100(12) 569 - 579, Dec. 2017, Scientific journal - Compact dual-band bandpass filter using stub-loaded stepped impedance resonators with mixed electric and magnetic couplings
P. Wen; Z. Ma; H. Liu; M. Ohira; B. Ren; X. Wang
Proc. of 2017 Asia-Pacific Microwave Conf. (APMC2017), Nov. 2017, International conference proceedings - Dual-band bandpass filter type Wilkinson power divider with microstrip composite resonators
B. Ren; Z. Ma; H. Liu; M. Ohira; P. Wen; X. Wang; X. Guan
Proc. of 2017 Asia-Pacific Microwave Conf. (APMC2017), Nov. 2017, International conference proceedings - A novel eigenmode-based neural network for fully automated microstrip bandpass filter design
Masataka Ohira; Ao Yamashita; Zhewang Ma; Xiaolong Wang
IEEE MTT-S International Microwave Symposium Digest, Institute of Electrical and Electronics Engineers Inc., 1628 - 1631, 04 Oct. 2017, International conference proceedings - Design of a Compact Diplexer Using Dual-Mode Microstrip and Slotline Resonators
B. Ren; Z. Ma; H. Liu; M. Ohira; P. Wen; X. Wang; X. Guan
2017 6th Asia-Pacific Conf. on Antennas and Propagat. (APCAP2017), Oct. 2017, International conference proceedings - Dual-Band Design Theory for Dual Transmission-Line Transformer
Xiaolong Wang; Zhewang Ma; Masataka Ohira
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 27(9) 782 - 784, Sep. 2017, Scientific journal - Coupling-Matrix Based Design of Microstrip Filtering Antenna with Cross Coupling between Antenna and Resonator
M. Ohira; T. Miyazaki; Z. Ma; X. Wang
Proc. of 2017 Thailand-Japan MicroWave (TJMW2017), Jun. 2017, International conference proceedings - A Fourth-order Tunable Bandpass Filter with Constant Absolute Bandwidth and Transmission Zeros
S. Hashimoto; M. Ohira; Z. Ma; X. Wang
Proc. of 2017 Thailand-Japan MicroWave (TJMW2017), Jun. 2017, International conference proceedings - Design of Microstrip Bandpass Filters Using Neural Network Based on Eigenmodes
A. Yamashita; M. Ohira; Z. Ma; X. Wang
Proc. of 2017 Thailand-Japan MicroWave (TJMW2017), Jun. 2017, International conference proceedings - Intra-spacecraft wireless link and its application to spacecraft environmental tests
T. Toda; N. Kukutsu; S. Kitazawa; S. Ano; H. Kamoda; T. Kumagai; K. Kobayashi; M. Ohira; S. Shimizu
Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, ists30(14) 21 - 26, Feb. 2017, Scientific journal - A flexible two-section transmission-line transformer design approach for complex source and real load impedances
Xiaolong Wang; Masataka Ohira; Zhewang Ma
IEICE ELECTRONICS EXPRESS, 14(1), Jan. 2017, Scientific journal - Design of compact ultra wide-band bandpass filters using short-circuited stubs with improved stopband characteristics
R. Hamano; Z, Ma; M. Ohira
電子情報通信学会和文誌C, J99-C(12) 618 - 624, Dec. 2016, Scientific journal - Capacitive/inductive compensation factor in coupled lines wilkinson power divider design
Xiaolong Wang; Masataka Ohira; Zhewang Ma; Iwata Sakagami; Atsushi Mase; Masayuki Yoshikawa
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 58(12) 2940 - 2944, Dec. 2016, Scientific journal - A Fully Canonical Bandpass Filter Design Using Microstrip Transversal Resonator Array Configuration
Masataka Ohira; Toshiki Kato; Zhewang Ma
IEICE TRANSACTIONS ON ELECTRONICS, E99C(10) 1122 - 1129, Oct. 2016, Scientific journal - Coupled microstrip line Wilkinson power divider with open-stubs for compensation
X. Wang; M. Ohira; Z. Ma
ELECTRONICS LETTERS, 52(15) 1314 - 1315, Jul. 2016, Scientific journal - Accurate Schiffman-type section design approach for microstrip line Wilkinson power divider
Xiaolong Wang; Masataka Ohira; Zhewang Ma
IEICE ELECTRONICS EXPRESS, 13(14), Jul. 2016, Scientific journal - A New Design Formula of Coupling Coefficient between Antenna and Resonator for Efficient Design of Filtering Antenna
Masataka Ohira; Kazuma Yamanaka; Zhewang Ma
IEICE TRANSACTIONS ON ELECTRONICS, E99C(7) 744 - 750, Jul. 2016, Scientific journal - Design of Multistage Microstrip Filtering Antenna by Using Parameter Extraction Method
K. Sato; M. Ohira; Z. Ma
Proceedings of 2016 Thailand-Japan MicroWave (TJMW2016), Jun. 2016, International conference proceedings - A Simple and Fast Tuning Technique for Direct-coupled Resonator Filter Design
R. Tomita; M. Ohira; Z. Ma
Proceedings of 2016 Thailand-Japan MicoWave (TJMW2016), Jun. 2016, International conference proceedings - Physical Realization and Systematic Design of Microwave Bandpass Filters with Generalized Chebyshev Function Response
M. Ohira; Z. Ma
Proceedings of 2016 Thailand-Japan MicroWave (TJMW2016), Jun. 2016, International conference proceedings - A Compact Quasi-Millimeter-Wave Microstrip Wideband Bandpass Filter
Zhewang Ma; Minjie Ai; Masataka Ohira; Chun-Ping Chen; Tetsuo Anada
2016 IEEE INTERNATIONAL CONFERENCE ON UBIQUITOUS WIRELESS BROADBAND (ICUWB2016), 2016, International conference proceedings - Novel Microstrip Realization and Straightforward Design of Fully Canonical Cul-de-Sac Coupling Bandpass Filters
Masataka Ohira; Toshiki Kato; Zhewang Ma
2016 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS), 2016, International conference proceedings - On the design method of microstrip filtering antennas using only amplitude property of input reflection responses
M. Ohira; Z. Ma
Proceedings of 2015 Thailand-Japan MicroWave (TJMW2015), Aug. 2015, International conference proceedings - Intra-spacecraft wireless link and its application to spacecraft environmental tests
T. Toda; N. Kukutsu; S. Kitazawa; S. Ano; H. Kamoda; T. Kumagai; K. Kobayashi; M. Ohira; S. Shimizu
30th International Symposium on Space Technology and Science (ISTS), Jul. 2015, International conference proceedings - An Efficient Design Method of Microstrip Filtering Antenna Suitable for Circuit Synthesis Theory of Microwave Bandpass Filters
Masataka Ohira; Zhewang Ma
2015 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP), 846 - 849, 2015, International conference proceedings - A Novel Microstrip Filter Structure Consisting of Transversal Resonator Array and Its Fully Canonical Bandpass Filter Design
Masataka Ohira; Toshiki Kato; Zhewang Ma
2015 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS), 2015, International conference proceedings - A Compact Three-Mode H-Shaped Resonator Bandpass Filter Having High Passband Selectivity with Four Transmission Zeros and Wide Stopband Characteristic
Masataka Ohira; Zhewang Ma
IEICE TRANSACTIONS ON ELECTRONICS, E97C(10) 957 - 964, Oct. 2014, Scientific journal - Microwave Propagation Characterization in Automotive Engine Compartment for Wireless Harness Communications
Masataka Ohira; Susumu Ano; Shoichi Kitazawa; Hiroshi Ban; Naoya Kukutsu; Kiyoshi Kobayashi
2014 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM (APSURSI), 1179 - 1180, 2014, International conference proceedings - Physical Interpretation of Frequency-Dependent S/L Coupling in Multi-Mode Bandpass Filter and Its Design Approach for Generation of Multiple Finite Transmission Zeros
Masataka Ohira; Hiroyuki Aoyama; Zhewang Ma
2014 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS), 2014, International conference proceedings - Microstrip Lowpass Filters with Improved Frequency Responses Using Coupled-Line Hairpin Resonators
Junichi Tsurumi; Zhewang Ma; Masataka Ohira
2014 ASIA-PACIFIC MICROWAVE CONFERENCE (APMC), 1154 - 1156, 2014, International conference proceedings - Comments on "A Parameter-Extraction Method for Microwave Transversal Resonator Array Bandpass Filters With Direct Source/Load Coupling" Reply
Masataka Ohira; Zhewang Ma
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 61(12) 4284 - 4285, Dec. 2013, Scientific journal - Improvement on stopband property of compact waveguide filters using hybrid resonances and antiresonances of cutoff waveguides and planar resonators
Matsumoto, Takaaki; Ohira, Masataka; Ma, Zhewang
IEICE Transactions on Electronics (Japanese Edition), J96-C(12) 524 - 532, Dec. 2013, Scientific journal - 共振器並列形回路の合成理論とパラメータ抽出法を併用した有極形多モードフィルタの設計法
H. Aoyama; M. Ohira; Z. Ma
IEICE Transactions on Electronics (Japanese Edition), J96-C(12) 471 - 479, Dec. 2013, Scientific journal - A Parameter-Extraction Method for Microwave Transversal Resonator Array Bandpass Filters With Direct Source/Load Coupling
Masataka Ohira; Zhewang Ma
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 61(5) 1801 - 1811, May 2013, Scientific journal - Design of a Quasi-Millimeter-Wave UWB Bandpass Filter Using a Microstrip Dual-Mode Ring Resonator and Half-Wavelength Resonators
WANG Yuanyuan; MA Zhewang; OHIRA Masataka; CHEN Chun-Ping; ANADA Tetsuo
IEICE technical report. Microwaves, 112(459) 27 - 32, 06 Mar. 2013 - A Cutoff-Waveguide Bandpass Filter Using Antiresonant Elements for Sharp Passband Skirt and Wide Stopband Characteristics
Masataka Ohira; Takaaki Matsumoto; Zhewang Ma
2013 ASIA-PACIFIC MICROWAVE CONFERENCE PROCEEDINGS (APMC 2013), 447 - 449, 2013, International conference proceedings - A Bandwidth-Enhanced Low-Profile Antenna for In-Machine Wireless Harness Communications and Its Clearance Distance Evaluation
Masataka Ohira
2013 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM (APSURSI), 978 - 979, 2013, International conference proceedings - Deterministic Extraction of Direct Source/Load Coupling and Its Application to Multi-Mode Filter Designs Based on Transversal Array Network Theory
Masataka Ohira; Hiroyuki Aoyama; Zhewang Ma
2013 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST (IMS), 2013, International conference proceedings - Circuital Modeling and Physical Understanding of Dissipation Effects for Coupled Resonator Filters Transformed into Transversal Array Configuration
Masataka Ohira; Zhewang Ma
PROCEEDINGS OF 2013 URSI INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC THEORY (EMTS), 53 - 56, 2013, International conference proceedings - Resonant-Mode Characteristics of a New Three-Mode Hybrid Microstrip/Slotline Resonator and Novel Realization of Compact Bandpass Filter with Four Transmission Zeros
Masataka Ohira; Zhewang Ma
IEICE TRANSACTIONS ON ELECTRONICS, E95C(7) 1203 - 1210, Jul. 2012, Scientific journal - Efficient Gain Optimization Techniques for Azimuth Beam/Null Steering of Inverted-F Multiport Parasitic Array Radiator (MuPAR) Antenna
Masataka Ohira; Amane Miura; Makoto Taromaru; Masazumi Ueba
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 60(3) 1352 - 1361, Mar. 2012, Scientific journal - Compact Bandpass Filter with a Sharp Roll-off Response Using Multi-Path Coupling Scheme of H-Shaped Resonator
Masataka Ohira; Zhewang Ma
2012 ASIA-PACIFIC MICROWAVE CONFERENCE (APMC 2012), 1130 - 1132, 2012, International conference proceedings - A novel compact high-performance microstrip 26GHz ultra-wideband (UWB) bandpass filter for vehicle radar systems
Zhewang Ma; Masataka Ohira; Chun-Ping Chen; Tetsuo Anada
IEEE MTT-S International Microwave Workshop Series on Millimeter Wave Wireless Technology and Applications, IMWS 2012 - Proceeding, 69 - 72, 2012, International conference proceedings - Experimental Characterization of Microwave Radio Propagation in ICT Equipment for Wireless Harness Communications
Masataka Ohira; Takayuki Umaba; Shoichi Kitazawa; Hiroshi Ban; Masazumi Ueba
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 59(12) 4757 - 4765, Dec. 2011, Scientific journal - A Novel Feeding Structure to Generate Multiple Transmission Zeros for Miniature Waveguide Bandpass Filters Composed of Frequency-Selective Surfaces
Masataka Ohira; Zhewang Ma; Hiroyuki Deguchi; Mikio Tsuji
IEICE TRANSACTIONS ON ELECTRONICS, E94C(10) 1586 - 1593, Oct. 2011, Scientific journal - Characteristics and design formulas of a microstrip stub-loaded multi-mode ring resonator
Z. Ma; M. Ohira; T. Hotaka; C.-P. Chen; T. Anada; Y. Kobayashi
Proceedings of 2011 China-Japan Joint Microwave Conference (CJMW2011), 354 - 357, Apr. 2011, International conference proceedings - Resonant-mode behavior of a new slotline-embedded three-mode microstrip-line resonator and its filter application
M. Ohira; Z. Ma; M. Kato
Proceedings of 2011 China-Japan Joint Microwave Conference (CJMW2011), 326 - 329, Apr. 2011, International conference proceedings - Evolutionary Generation of Subwavelength Planar Element Loaded Monopole Antenna
Masataka Ohira; Hiroshi Ban; Masazumi Ueba
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 10 1559 - 1562, 2011, Scientific journal - Design of a Broadband Bandpass Filter Using Microstrip Stubs-Loaded Three-Mode Resonator
Zhewang Ma; Toru Kimura; Masataka Ohira; Chun-Ping Chen; Tetsuo Anada
ASIA-PACIFIC MICROWAVE CONFERENCE 2011, 139 - 142, 2011, International conference proceedings - A New Type of Compact Evanescent-Mode Waveguide Bandpass Filter Using Planar Dual-Behavior Resonators
Masataka Ohira; Takaaki Matsumoto; Zhewang Ma; Hiroyuki Deguchi; Mikio Tsuji
ASIA-PACIFIC MICROWAVE CONFERENCE 2011, 1023 - 1026, 2011, International conference proceedings - Eigen-mode analysis of a novel three-mode microstrip/slot-line resonator and the development of a compact bandpass filter with multiple transmission zeros and wide stopband property
Masataka Ohira; Zhewang Ma
IEEE MTT-S International Microwave Symposium Digest, 1 - 4, 2011, International conference proceedings - 60-GHz Wideband Substrate-Integrated-Waveguide Slot Array Using Closely Spaced Elements for Planar Multisector Antenna
Masataka Ohira; Amane Miura; Masazumi Ueba
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 58(3) 993 - 998, Mar. 2010, Scientific journal - 60-GHz-Band Switched-Beam Eight-Sector Antenna with SP8T Switch for 180 degrees Azimuth Scan
Amane Miura; Masataka Ohira; Shoichi Kitazawa; Masazumi Ueba
IEICE TRANSACTIONS ON COMMUNICATIONS, E93B(3) 551 - 559, Mar. 2010, Scientific journal - STUDY ON EQUIVALENT CIRCUIT OF COAXIAL LINE TO POST-WALL WAVEGUIDE TRANSITION IN 60-GHz BAND
Wuqiong Luo; Masataka Ohira; Amane Miura; Masazumi Ueba
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 52(3) 623 - 626, Mar. 2010, Scientific journal - A Novel Coaxial-Excited FSS-Loaded Waveguide Filter with Multiple Transmission Zeros
Masataka Ohira; Zhewang Ma; Hiroyuki Deguchi; Mikio Tsuji
2010 ASIA-PACIFIC MICROWAVE CONFERENCE, 1720 - 1723, 2010, International conference proceedings - 60GHz wideband shaped-beam antenna using closely-spaced waveguide slots for wireless LAN
M. Ohira; A. Miura; M. Ueba
Proceedings of 2008 Internatioanl Symposium on Antennas and Propagation (ISAP2008), 714 - 717, Oct. 2008, International conference proceedings - Bandwidth Enhancement of Coaxial Line to Post-wall Waveguide Transition Using Short-ended Straight Post in 60-GHz Band
Wuqiong Luo; Masataka Ohira; Amane Miura; Masazumi Ueba
APMC: 2008 ASIA PACIFIC MICROWAVE CONFERENCE (APMC 2008), VOLS 1-5, 2479 - 2482, 2008, International conference proceedings - Compact High-Performance Planar Bandpass Filters with Arbitrarily-Shaped Conductor Patches and Slots
Tadashi Kido; Hiroyuki Deguchi; Mikio Tsuji; Masataka Ohira
2008 EUROPEAN MICROWAVE CONFERENCE, VOLS 1-3, 838 - +, 2008, International conference proceedings - Multiple-step rectangular horn with two orthogonal sectoral tapers for elliptical beam
Hirotsugu Urata; Masataka Ohira; Hiroyuki Deguchi; Mikio Tsuji
IEICE TRANSACTIONS ON ELECTRONICS, E90C(2) 217 - 223, Feb. 2007, Scientific journal - Multi-resonator generation in arbitrarily-shaped planar-circuit filters by genetic optimization
Akinori Kido; Hroyuki Deguchi; Mikio Tsuji; Masataka Ohira
2007 EUROPEAN MICROWAVE INTEGRATED CIRCUITS CONFERENCE, VOLS 1 AND 2, 308 - +, 2007, International conference proceedings - Multi-resonator generation in arbitrarily-shaped planar-circuit filters by genetic optimization
Akinori Kido; Hroyuki Deguchi; Mikio Tsuji; Masataka Ohira
2007 EUROPEAN MICROWAVE CONFERENCE, VOLS 1-4, 1241 - +, 2007, International conference proceedings - A novel waveguide bandpass filter with multiple attenuation poles using four-armed square-loop FSSs
Masataka Ohira; Hiroyuki Deguchi; Mikio Tsuji; Hiroshi Shigesawa
ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS, 90(4) 26 - 33, 2007, Scientific journal - Planar-circuit bandpass filters consisting of arbitrarily shaped elements
Masataka Ohira; Hiroyuki Deguchi; Mikio Tsuji; Hiroshi Shigesawa
ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS, 90(2) 1 - 8, 2007, Scientific journal - Varactor-loaded inverted-F multiport parasitic array radiator antenna
Masataka Ohira; Amane Miura; Masazumi Ueba; Makoto Taromaru; Takashi Ohira
2007 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM, VOLS 1-12, 4744 - 4747, 2007, International conference proceedings - Circuit Synthesis for Compact Waveguide Filters with Closely-Spaced Frequency Selective Surfaces
Ohira, M.; Deguchi, H.; Tsuji, M.
International Journal of Microwave and Optical Technology, 1(2-I) 366 - 370, Aug. 2006, Scientific journal - アーム付方形ループFSSを用いた有極形帯域通過導波管フィルタ
大平昌敬; 出口博之; 辻幹男; 繁沢宏
電子情報通信学会論文誌(C), J89-C(7) 458 - 465, Jul. 2006, Scientific journal - 任意形状素子による平面回路帯域通過フィルタの一構成法
大平昌敬; 出口博之; 辻幹男; 繁沢宏
電子情報通信学会論文誌(C), J89-C(5) 274 - 281, May 2006, Scientific journal - A novel resonant window having dual-behavior resonance for pseudo-elliptic waveguide filter
Masataka Ohira; Hiroyuki Deguchi; Mikio Tsuji
2006 EUROPEAN MICROWAVE CONFERENCE, VOLS 1-4, 408 - +, 2006, International conference proceedings - Novel dual-resonant and dual-polarized frequency selective surface using eight-legged element and its experimental verification
M Ohira; H Deguchi; M Tsuji; H Shigesawa
IEICE TRANSACTIONS ON ELECTRONICS, E88C(12) 2229 - 2235, Dec. 2005, Scientific journal - Novel waveguide filters with multiple attenuation poles using dual-behavior resonance of frequency-selective surfaces
M Ohira; H Deguchi; M Tsuji; H Shigesawa
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 53(11) 3320 - 3326, Nov. 2005, Scientific journal - A high-performance frequency selective surface consisting of closely-packed eight-legged resonant elements
M. Ohira; H. Deguchi; M. Tsuji; H. Shigesawa
2005 Korea Japan Microwave Workshop (KJMW), 46 - 49, Oct. 2005, Scientific journal - Circuit synthesis for compact waveguide filters with closely-spaced frequency selective surfaces
M. Ohira; H. Deguchi; M. Tsuji; H. Shigesawa
10th International Symposium on Microwave and Optical Technology (IJMOT), 811 - 814, Aug. 2005, International conference proceedings - Eight-legged resonant element for multiband FSS and its experimental verification
M. Ohira; H. Deguchi; M. Tsuji; H. Shigesawa
2005 International Symposium on Antennas and Propagation (ISAP2005), 861 - 864, Aug. 2005, International conference proceedings - A new dual-behavior FSS resonator for waveguide filter with multiple attenuation poles
Masataka Ohira; Hiroyuki Deguchi; Mikio Tsuji; Hiroshi Shigesawa
35th European Microwave Conference, Vols 1-3, Conference Proceedings, 189 - 192, 2005, International conference proceedings - Novel waveguide filters with multiple attenuation poles using frequency selective surfaces
M Ohira; H Deguchi; M Tsuji; H Shigesawa
2005 IEEE MTT-S International Microwave Symposium, Vols 1-4, 273 - 276, 2005, International conference proceedings - Equivalent circuit for frequency selective surface with complicated element extracted from eigenvalue analysis
M. Ohira; H. Deguchi; M. Tsuji; H. Shigesawa
Proceedings of Asia-Pacific Microwave Conference (APMC2004), Dec. 2004, International conference proceedings - 任意形状素子を有する周波数選択板の等価回路による特性解析
大平昌敬; 出口博之; 辻幹男; 繁沢宏
電子情報通信学会論文誌(C), J87-C(12), Dec. 2004, Scientific journal - Multiband single-layer frequency selective surface designed by combination of genetic algorithm and geometry-refinement technique
M Ohira; H Deguchi; M Tsuji; H Shigesawa
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 52(11) 2925 - 2931, Nov. 2004, Scientific journal - Multiband Single-layer Frequency Selective Surface designed by Optimization Technique
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEEJ Transactions on Fundamentals and Materials, The Institute of Electrical Engineers of Japan, 123(3) 253 - 258, 01 Mar. 2003 - A singular characteristic of single-layer frequency selective surface with the element optimized by GA
M Ohira; H Deguchi; M Tsuji; H Shigesawa
2003 IEEE TOPICAL CONFERENCE ON WIRELESS COMMUNICATION TECHNOLOGY, 216 - 217, 2003, International conference proceedings
MISC
- Design of Stack Structured Filtering Antenna Array with Transmission Zeros Using only Adjacent Resonator Couplings
池田千晴; 大平昌敬; MA Zhewang; 出口博之
電子情報通信学会技術研究報告(Web), 124(355(ED2024 66-81)), 2025 - A Frequency-agile Beam-steerable Microstrip Filtering Array Antenna
渡邉一瑳; 大平昌敬; MA Zhewang; 出口博之
電子情報通信学会技術研究報告(Web), 124(355(ED2024 66-81)), 2025 - On the Multi-Band Operation of 7.1/8.5/20/30-GHz Spline-Taper Horn Antenna with Coaxial-Groove Walls
南野秀幸; 西田拓暉; 大平昌敬; 出口博之
電子情報通信学会技術研究報告(Web), 124(95(EMT2024 6-58)), 2024 - A New Coupling Configuration of Reflectionless Bandpass Filters and Its Microstrip Filter Design
廣田昂也; 大平昌敬; MA Zhewang; 出口博之
電子情報通信学会技術研究報告(Web), 124(316(MW2024 144-151)), 2024 - Design and Experimental Verification of Parasitic-Element Loaded Wideband Filtering Antennas over 30% Frequency Bandwidth
崎山拳; 大平昌敬; MA Zhewang
電子情報通信学会論文誌 C(Web), J107-C(3), 2024 - On the Multi-Band Operation of 7.1/8.5/20/30-GHz Spline-Taper Horn Antenna with Coaxial-Groove Walls
南野秀幸; 西田拓暉; 大平昌敬; 出口博之
電子情報通信学会技術研究報告(Web), 124(95(EMT2024 6-58)), 2024 - Design of Wideband BPF Using Microstrip Triple-Mode Resonator and Lumped Elements
松崎航太; MA Zhewang; 大平昌敬
電子情報通信学会大会講演論文集(CD-ROM), 2024, 2024 - Optimization for Low Cross-Polarization Multimode Horn with Spherical Wavefront
出口博之; 大平昌敬
電子情報通信学会技術研究報告(Web), 124(275(EMT2024 59-89)), 2024 - Improvement of Characteristics of a Dual-Band Orthogonally Polarized Single-Layer Reflectarray with Region Segmentation for Mutual Coupling Suppression Suppression
田中遥喜; 大平昌敬; 出口博之
電子情報通信学会技術研究報告(Web), 124(275(EMT2024 59-89)), 2024 - Multimode Transmission Equation using Line-Integral Formulation for Taper Waveguide with Straight Axis
出口博之; 大平昌敬
電子情報通信学会技術研究報告(Web), 124(95(EMT2024 6-58)), 2024 - Two-band Independent Control of Orthogonal Polarization Single-layer Reflectarray with Arbitrarily Shaped Elements
田中遥喜; 牧野由弥; 大平昌敬; 出口博之
電子情報通信学会技術研究報告(Web), 124(47(EMT2024 1-5)), 2024 - Fundamentals of Microwave Filter Design
大平昌敬; 出口博之
電子情報通信学会技術研究報告(Web), 124(78(MW2024 18-29)), 2024 - Design of Compact Wideband BPFs Using Microstrip Triple-Mode Resonators with Lumped Chip Elements
松崎航太; MA Zhewang; 大平昌敬
電子情報通信学会技術研究報告(Web), 124(37(EST2024 1-6)), 2024 - Design and Experiments of Circularly Polarized Wideband Filtering Antenna with 20% Fractional Bandwidth
崎山拳; 大平昌敬; MA Zhewang
電子情報通信学会技術研究報告(Web), 124(32(MW2024 8-17)), 2024 - Design of Novel Box-type Coupling Microstrip Diplexer with Transmission Zeros
西山勇大; 大平昌敬; MA Zhewang
電子情報通信学会技術研究報告(Web), 123(365(ED2023 65-81)), 2024 - A Fourth-order Box-Coupling Microstrip Bandstop Filter with Simultaneous Excitation of Multiple Resonators
廣田昂也; 大平昌敬; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 2023, 2023 - A Reinforcement Learning Approach Enabling Automatic Microstrip BPF Design for Multiple Specifications
浅井悠登; 大平昌敬; MA Zhewang
電子情報通信学会技術研究報告(Web), 122(370(ED2022 86-97)), 2023 - マイクロストリップ短絡スタブを用いた整合回路に関する研究
齋藤篤貴; 馬哲旺; 大平昌敬
電子情報通信学会技術研究報告(Web), 122(443(WPT2022 30-62)), 2023 - Deep Reinforcement Learning Enabling Automatic Microstrip BPF Design for Multiple Specifications
浅井悠登; 大平昌敬; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 2023, 2023 - Fourth-order Symmetric Box-Coupling Microstrip Bandpass Filters with Asymmetric Transmission Zeros
廣田昂也; 大平昌敬; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 2023, 2023 - Design of Fourth-order Symmetric Box-Coupling Microstrip Bandpass Filters with Transmission Zeros for Asymmetric Frequency Responses
廣田昂也; 大平昌敬; MA Zhewang
電子情報通信学会技術研究報告(Web), 123(87(MW2023 20-26)), 2023 - 依頼講演 ニューラルネットワークを援用したマイクロ波フィルタ設計について—Invited Lecture : A Neural-Network Assisted Microwave Filter Design—電磁界理論研究会・第51回電磁界理論シンポジウム
大平 昌敬; 馬 哲旺
電気学会研究会資料. EMT = The papers of technical meeting on electromagnetic theory, IEE Japan / 電磁界理論研究会 [編], 電気学会, 2022(82-93) 17 - 22, 17 Nov. 2022 - A Parasitic-Element Loaded Wideband Filtering Antenna with Very Flat Gain in 30% Frequency Bandwidth
崎山拳; 大平昌敬; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 2022, 2022 - A Neural-Network Assisted Microwave Filter Design
大平昌敬; MA Zhewang
電子情報通信学会技術研究報告(Web), 122(256(EMT2022 44-68)), 2022 - An Encoder-Based Surrogate Model for Fast Frequency-Response Calculation of Planar BPFs
柴田蓮; 大平昌敬; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 2022, 2022 - Study on the Realization of Wire-Free Robots
芹澤和伸; 清水聡; 佐久間和司; 鈴木義規; 関屋大雄; 大平昌敬
電気学会全国大会講演論文集(CD-ROM), 2022, 2022 - A Compact 26 GHz Filtering Antenna with Cross Coupling Using LTCC Substrate
須藤薫; 御家瀬亮; 田口義規; 滝澤晃一; 南谷夏海; 尾仲健吾; 有海仁章; 早藤久夫; 大平昌敬
電子情報通信学会技術研究報告(Web), 121(360(ED2021 62-68)), 2022 - A PARAMETRIC SHAPE OPTIMIZATION USING THE NYSTROEM-BOUNDARY INTEGRAL EQUATION METHOD FOR COMPLEX EIGENVALUES OF ELECTROMAGNETIC SCATTERING PROBLEMS IN 2D
三澤亮太; 高橋勇二朗; 高橋勇二朗; MA Zhewang; 大平昌敬
計算数理工学論文集, 21, 2021 - 60-GHz Band Inline-Type SIW Filtering Antenna with Transmission Zeros
星野将輝; 大平昌俊; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 2021, 2021 - Examination status for the realization of wire-free robots
清水聡; 芹澤和伸; 佐久間和司; 鈴木義規; 関屋大雄; 大平昌敬
電子情報通信学会技術研究報告(Web), 121(265(SRW2021 29-52)), 2021 - Building Surrogate Model Using Convolutional Autoencoder for Fast Frequency Response Calculation of Planar BPFs
柴田蓮; 大平昌敬; MA Zhewang
電子情報通信学会技術研究報告(Web), 121(303(MW2021 84-103)), 2021 - 60-GHz Band Inline-Type SIW Filtering Antenna with Transmission Zeros without Cross Coupling
星野将輝; 大平昌敬; MA Zhewang
電子情報通信学会技術研究報告(Web), 121(254(MW2021 66-83)), 2021 - Design of Planar Filtering Antenna with Transmission Zeros Using Even/Odd-symmetric Electrc Field Distributions
河野亮介; 大平昌敬; MA Zhewang
電子情報通信学会技術研究報告(Web), 121(186(EMCJ2021 27-53)), 2021 - Acquisition of Automatic Design Techniques for Microstrip BPF with Transmission Zeros through Deep Reinforcement Learning
高野晃平; 大平昌敬; MA Zhewang
電子情報通信学会技術研究報告(Web), 121(106(EMT2021 7-27)), 2021 - Experimental Evaluation of 60-GHz Band Planar Antenna Consisting of Multiple Radiators and Multiple Resonators for Radiation of Three Orthogonal Components
大平昌敬; MA Zhewang
電子情報通信学会技術研究報告(Web), 120(353(ED2020 27-37)), 2021 - Design of Tunable Filtering Array Antenna with Constant Absolute Bandwidth
酒本拓弥; 大平昌敬; MA Zhewang; 山田暁弘
電子情報通信学会技術研究報告(Web), 120(422(MW2020 91-99)), 2021 - Automatic Microstrip BPF Design Using Deep Q-network
高野晃平; 大平昌敬; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 2021, 2021 - A Study of 60 GHz Band Millimeter-Wave Wireless Module for Mechatronic Equipment
佐久間和司; 清水聡; 芹澤和伸; 鈴木義規; 大平昌敬
電子情報通信学会大会講演論文集(CD-ROM), 2021, 2021 - Design and Experiment of 60-GHz Band Planar Antenna Consisting of Multiple Radiators and Multiple Resonators
大平昌敬; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 2021, 2021 - Design of Box-type Coupling Microstrip Bandpass Filter Using Even/odd-symmetric Electric Field Distributions of Half-wavelength Resonator
大野美帆; 大平昌敬; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 電気学会, 2020(37) 113 - 116, 16 Jul. 2020 - A Wideband Filtering Wilkinson Power Divider with Transmission Zeros
永田 大士; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 119(459) 29 - 34, 05 Mar. 2020 - Wideband General Chebyshev Bandstop Filters Using Signal Interference Technique
田部井 俊樹; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 119(459) 35 - 40, 05 Mar. 2020 - Improvement of Frequency Response of Wideband BPFs Using Short-Circuited Stubs Based on Signal Interference Method
山田 大介; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 119(459) 41 - 46, 05 Mar. 2020 - Wideband Broad-Band Bandpass Filters Using Transmission Line Shorted-Stubs and Coupled-Stubs
丸山 成章; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 119(459) 47 - 52, 05 Mar. 2020 - A Fourth-order Box-Type Coupling Microstrip Bandpass Filter Using Even/odd Symmetric Electric Fields of Open-end Half-wavelength Resonator
大野美帆; 大平昌敬; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 2020, 2020 - A Tunable Filtering Antenna with Frequency Selectivity/Tunability of Constant Absolute Bandwidth and Radiation Characteristic
大平昌敬; 相馬朝康; MA Zhewang
電子情報通信学会論文誌 C(Web), J103-C(9), 2020 - Design of Box-type Coupling Microstrip Bandpass Filter Using Even/odd-symmetric Electric Field Distributions of Half-wavelength Resonator
大野美帆; 大平昌敬; MA Zhewang
電子情報通信学会技術研究報告(Web), 120(100(EMT2020 6-25)), 2020 - Design of Microwave Bandpass Filters Using Neural Network
大平昌敬
電子情報通信学会技術研究報告, 119(449(SR2019 112-142)(Web)), 2020 - A Study on Wireless Harness of Mechatronics Equipment
清水聡; 佐久間和司; 鈴木義規; 関屋大雄; 大平昌敬
電子情報通信学会大会講演論文集(CD-ROM), 2020, 2020 - Design of 60-GHz Band Fourth-order Microstrip Filtenna with Transmission Zeros
大平昌敬; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 2020, 2020 - Automatic Structural Adjustment Method of Microstrip BPF Using Deep Q-network
高野晃平; 大平昌敬; MA Zhewang
電子情報通信学会技術研究報告(Web), 120(280(MW2020 71-79)), 2020 - A Filter-Technique Assisted Design of 60-GHz Band Planar Antenna with Radiation of Three Orthogonal Components
大平昌敬; MA Zhewang
電子情報通信学会技術研究報告(Web), 120(240(MW2020 65-70)), 2020 - Status of Study on Wireless Harness of Mechatronics Equipment
清水聡; 芹澤和伸; 佐久間和司; 鈴木義規; 関屋大雄; 大平昌敬
電子情報通信学会大会講演論文集(CD-ROM), 2020, 2020 - Design of Wideband Microstrip Filtering Antenna with Transmission Zeros
SONG Ilsub; 大平昌敬; MA Zhewang
電子情報通信学会技術研究報告, 電子情報通信学会, 119(292) 71 - 76, 14 Nov. 2019 - On the Relationship between Direct Source/Load Coupling and Higher-order Resonances in Microwave Bandpass Filter
大平昌敬; 御家瀬亮; MA Zhewang
電子情報通信学会技術研究報告, 電子情報通信学会, 119(292) 77 - 80, 14 Nov. 2019 - Design and Experimental Evaluation of Wideband Microstrip Filtenna Based on Wideband Transmission Line Bandpass Filter
大平 昌敬; 鈴木 悠介; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 119(204) 17 - 22, 19 Sep. 2019 - An Automated Design Method of Microstrip BPF with Transmission Zeros Using Both Forward and Inverse Models of Neural Network
山下 青; 大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 118(506) 121 - 126, 14 Mar. 2019 - An Automated Design Method of Microstrip BPF with Transmission Zeros Using Both Forward and Inverse Models of Neural Network
山下 青; 大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 118(507) 121 - 126, 14 Mar. 2019 - Design of Wideband Bandpass Filters with Quasi-Elliptic Characteristics Using Coupled Short-Circuited Stub
桂馬 康輔; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 118(403) 85 - 90, 17 Jan. 2019 - Design and Fabrication of Microstrip Reconfigurable Bandpass Filter Using Transversal Resonator Array
橋本 周磨; 大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 118(403) 91 - 96, 17 Jan. 2019 - Design of Microstrip Tunable Filtering Antenna with Constant Absolute Bandwidth
相馬 朝康; 大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 118(403) 97 - 102, 17 Jan. 2019 - Design of Quasi-Millimeter-Wave SIW Bandpass Filter with Transmission Zeros Using TE102 Mode for Negative Coupling
清水由太; 大平昌敬; MA Zhewang
電子情報通信学会技術研究報告, 電子情報通信学会, 118(403) 103 - 108, 17 Jan. 2019 - Design of Wideband Bandpass Filters with Quasi-Elliptic Characteristics Using Coupled Short-Circuited Stub
桂馬 康輔; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 118(402) 85 - 90, 17 Jan. 2019 - Design and Fabrication of Microstrip Reconfigurable Bandpass Filter Using Transversal Resonator Array
橋本 周磨; 大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 118(402) 91 - 96, 17 Jan. 2019 - Design of Microstrip Tunable Filtering Antenna with Constant Absolute Bandwidth
相馬 朝康; 大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 118(402) 97 - 102, 17 Jan. 2019 - TE₁₀₂モードによる負結合を用いた準ミリ波帯有極形SIW帯域通過フィルタの設計 (電子デバイス)
清水 由太; 大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 118(402) 103 - 108, 17 Jan. 2019 - 共振器並列形マイクロストリップリコンフィギャラブルフィルタ
橋本周磨; 大平昌敬; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 2019, 2019 - 準ミリ波帯Box結合有極形SIW帯域通過フィルタ
清水由太; 大平昌敬; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 2019, 2019 - 絶対帯域幅一定のマイクロストリップチューナブルフィルタリングアンテナ
相馬朝康; 大平昌敬; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 2019, 2019 - BPF結合行列抽出のためのベクトルフィッティング法による入出力線路の振幅・位相特性の高精度推定手法
大平昌敬; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 2019, 2019 - Design of Wideband Bandstop Filters Using Open Stubs
尤 天羽; 宋 安; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 118(361) 19 - 24, 13 Dec. 2018 - Design of Microstrip Dual-band Wilkinson Power Dividers with Large Center Frequency Ratios
宋 安; 馬 哲旺; 王 小龍; 大平 昌敬
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 118(361) 43 - 48, 13 Dec. 2018 - Report on 2018 IEEE MTT-S International Microwave Symposium
清水 隆志; 石川 亮; 上田 哲也; 大平 昌敬; 岡崎 浩司; 小松崎 優治; 田村 昌也
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 118(308) 95 - 102, 15 Nov. 2018 - Design of Compact Wideband Bandstop Filters Using Microstrip Ring Structures
田部井 俊樹; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 118(218) 55 - 59, 20 Sep. 2018 - Design of Microstrip Symmetric-Coupling Quadruplet Bandpass Filters with Transmission Zeros for Symmetric and Asymmetric Frequency Responses
御家瀬 亮; 大平 昌敬; 馬 哲旺; 王 小龍
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 118(18) 13 - 18, 27 Apr. 2018 - Design of Fully-canonical Cul-de-Sac Coupling Microstrip Bandstop Filter
鹿股 慎; 大平 昌敬; 馬 哲旺; 王 小龍
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(412) 41 - 46, 25 Jan. 2018 - Design of Fully-canonical Cul-de-Sac Coupling Microstrip Bandstop Filter
鹿股 慎; 大平 昌敬; 馬 哲旺; 王 小龍
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(412) 41 - 46, 25 Jan. 2018 - マイクロストリップCul-de-Sac結合帯域阻止フィルタの設計
鹿股慎; 大平昌敬; MA Zhewang; WANG Xiaolong
電子情報通信学会大会講演論文集(CD-ROM), 2018, 2018 - 短絡スタブを利用した広帯域5段マイクロストリップフィルタリングアンテナ
佐藤和洋; 大平昌敬; MA Zhewang; WANG Xiaolong
電子情報通信学会大会講演論文集(CD-ROM), 2018, 2018 - BPFの結合行列抽出のための入出力線路特性の高精度ディエンベッディング法
冨田諒; 大平昌敬; MA Zhewang; WANG Xiaolong
電子情報通信学会大会講演論文集(CD-ROM), 2018, 2018 - リング構造を用いた小型マイクロ波帯域阻止フィルタの設計
田部井俊樹; MA Zhewang; 大平昌敬
電子情報通信学会大会講演論文集(CD-ROM), 2018, 2018 - 広い周波数比を有するデュアルバンドWPDの設計
SONG An; MA Zhewang; WANG Xiaolong; 大平昌敬
電子情報通信学会大会講演論文集(CD-ROM), 2018, 2018 - オープンスタブを用いたマイクロストリップ広帯域BSFの設計法
YOU Tianyu; SONG An; MA Zhewang; 大平昌敬
電子情報通信学会大会講演論文集(CD-ROM), 2018, 2018 - 急峻な遮断特性と高減衰量の広い阻止域特性を実現する6段Cul-de-Sac結合BPF
御家瀬亮; 大平昌敬; MA Zhewang
電子情報通信学会大会講演論文集(CD-ROM), 2018, 2018 - Design of Wideband Microstrip Filtering Antenna Using Short Stub Structure
佐藤 和洋; 大平 昌敬; 馬 哲旺; 王 小龍
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(366) 47 - 52, 19 Dec. 2017 - Tutorial Lecture : A Design Method of Filtering Antennas
大平 昌敬
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(215) 31 - 36, 21 Sep. 2017 - Automatic Design of Microstrip Bandpass Filters Using Neural Networks of Forward and Inverse Models Based on Eigenmodes
山下 青; 大平 昌敬; 馬 哲旺; 王 小龍
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(216) 69 - 74, 21 Sep. 2017 - Design and Fabrication of Fourth-order Tunable Bandpass Filter with Absolute Bandwidth and Transmission Zeros
橋本 周磨; 大平 昌敬; 馬 哲旺; 王 小龍
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(216) 75 - 80, 21 Sep. 2017 - Theoretical Relations between Unloaded Q Factor, Stored Energy, Group Delay, and Insertion Loss Derived from Coupling Matrix of Filter Circuit
大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(34) 55 - 60, 18 May 2017 - Design and Experiment of Fully Canonical Cul-de-Sac Coupling Microstrip BPF with Controllable Direct Source/Load Coupling
加藤 駿祈; 大平 昌敬; 馬 哲旺; 王 小龍
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(15) 23 - 28, 28 Apr. 2017 - Design of Filtering Antenna with Transmission Zeros Using Cross Coupling Between Antenna and Resonator
宮崎 寿基; 大平 昌敬; 馬 哲旺; 王 小龍
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 116(431) 41 - 46, 26 Jan. 2017 - Improved Design Method of Dual-Band Bandpass Filters Using Microstrip Composite Resonators
張 茹; 馬 哲旺; 大平 昌敬; 王 小龍; 陳 春平; 穴田 哲夫
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 116(431) 47 - 52, 26 Jan. 2017 - Design of Filtering Antenna with Transmission Zeros Using Cross Coupling Between Antenna and Resonator
宮崎 寿基; 大平 昌敬; 馬 哲旺; 王 小龍
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 116(432) 41 - 46, 26 Jan. 2017 - Improved Design Method of Dual-Band Bandpass Filters Using Microstrip Composite Resonators
張 茹; 馬 哲旺; 大平 昌敬; 王 小龍; 陳 春平; 穴田 哲夫
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 116(431) 47 - 52, 26 Jan. 2017 - 入出力線路の伝送損失のディエンベディングによるマイクロ波帯域通過フィルタの結合行列抽出法の改善
大平 昌敬; 馬 哲旺
電子情報通信学会和文論文誌(C), J100-C 569 - 579, 2017 - 周波数選択特性を再構成可能なマイクロ波帯バンドパスフィルタデバイスの創出
大平昌敬
村田学術振興財団年報, (31), 2017 - Automated Design of Microstrip Parallel-Coupled Bandpass Filters Using Neural Network Based on Coupling Matrix
山下 青; 大平 昌敬; 馬 哲旺; 王 小龍
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 116(363) 135 - 140, 15 Dec. 2016 - Improved Extraction Method for Coupling-Matrix of Microstrip Bandpass Filters with Lossy Input/Output Lines
冨田 諒; 大平 昌敬; 馬 哲旺; 王 小龍
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 116(363) 141 - 146, 15 Dec. 2016 - Special Talk : Report on 2016 IEEE MTT-S International Microwave Symposium
大平 昌敬; 岡崎 浩司; 加屋野 博幸; 佐藤 優; 清水 隆志; 濱田 裕史
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 116(310) 49 - 55, 17 Nov. 2016 - Design of a Microstrip Bandpass Filter Using Composite Resonators with Multiple Transmission Zeros and Improved Stopband Characteristics
馬 哲旺; 松清 数也; 大平 昌敬; 陳 春平; 穴田 哲夫
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 116(212) 225 - 230, 07 Sep. 2016 - Special Talk : Design and Fabrication of Bandpass Filter Using Microstrip Quarter-wavelength Resonators to Realize a Specified Attenuation
加藤 駿祈; 大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(476) 113 - 116, 02 Mar. 2016 - Special Talk : Design and Fabrication of Bandpass Filter Using Microstrip Quarter-wavelength Resonators to Realize a Specified Attenuation
加藤 駿祈; 大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(476) 113 - 116, 02 Mar. 2016 - C-2-61 Design of Wideband Bandpass Filters with Transmission Zeros Using Open and Short-Circuited Transmission Line Stubs
Hamano Ryuhi; Ma Zhewang; Ohira Masataka; Chen Chun-Ping; Anada Tetsuo
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2016(1) 90 - 90, 01 Mar. 2016 - C-2-62 Design of Bandpass Filters with Transmission Zeros Based on Fully Canonical Cul-de-Sac Coupling
Kato Toshiki; Ohira Masataka; Ma Zhewang
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2016(1) 91 - 91, 01 Mar. 2016 - Design of Fully Canonical Cul-de-Sac Coupling Microstrip Filters Having Transmission Zeros for Symmetric and Asymmetric Frequency Responses
加藤 駿祈; 大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(391) 1 - 6, 14 Jan. 2016 - Design of Compact Quasi-Millimeter-Wave and Millimeter-Wave Microstrip Wideband Bandpass Filters
艾 敏杰; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(391) 7 - 12, 14 Jan. 2016 - Design of Compact Lowpass Filters Using Microstrip Stub-Loaded Coupled-Lines
別府 耕平; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(372) 41 - 46, 17 Dec. 2015 - Design of Broad-Band Bandpass Filters with Transmission Zeros Using Short-Circuited Transmission Line Stubs
濵野 竜飛; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(372) 47 - 52, 17 Dec. 2015 - A Single-layer Planar Filter Structure to Realize Fully Canonical Cul-de-Sac Coupling Matrix and Design of Bandpass Filters with Transmission Zeros
加藤 駿祈; 大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(372) 53 - 58, 17 Dec. 2015 - Report on 2015 IEEE MTT-S International Microwave Symposium
西川 健二郎; 天川 修平; 大平 昌敬
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(314) 47 - 52, 19 Nov. 2015 - C-2-37 Design of a Compact UWB Bandpass Filter Using Short-Circuited Stubs with Improved Frequency Response
Hamano Ryuhi; Ma Zhewang; Ohira Masataka; Chen Chun-Ping; Anada Tetsuo
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2015(1) 57 - 57, 25 Aug. 2015 - C-2-38 Design of Compact Bandstop Filter and Lowpass Filter Using Microstrip Coupled Lines
Beppu Kohei; Ma Zhewang; Ohira Masataka
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2015(1) 58 - 58, 25 Aug. 2015 - C-2-39 A Design Method of Filtering Antenna with Evaluation of Coupling Coefficient between Antenna and Resonator Using Only Amplitude Property of Input Reflection Response
Ohira Masataka; Ma Zhewang
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2015(1) 59 - 59, 25 Aug. 2015 - Design of Compact Ultra Wide-Band Bandpass Filters Using Short-Circuited Stubs with Improved Stopband Characteristics
濵野 竜飛; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(115) 7 - 12, 25 Jun. 2015 - Design of Microstrip Bandpass Filter with Transmission Zeros Using Half-wavelength Resonator Transversal Array
加藤 駿祈; 大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(66) 93 - 98, 28 May 2015 - Special Talk : A Parameter-Extraction Method for Microwave Transversal Resonator Array Bandpass Filters with Direct Source/Load Coupling
OHIRA Masataka; MA Zhewang
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 114(498) 55 - 60, 05 Mar. 2015 - Special Talk : A Parameter-Extraction Method for Microwave Transversal Resonator Array Bandpass Filters with Direct Source/Load Coupling
OHIRA Masataka; MA Zhewang
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 114(498) 55 - 60, 05 Mar. 2015 - C-2-33 Design of Microstrip Filtering Antenna Based on Input Reflection Responses and Its Experimental Verification
Yamanaka Kazuma; Ohira Masataka; Ma Zhewang
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2015(1) 53 - 53, 24 Feb. 2015 - C-2-54 A Microstrip Bandpass Filter with Transmission Zeros Provided by Transversal Resonator Array
Kato Toshiki; Ohira Masataka; Ma Zhewang
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2015(1) 74 - 74, 24 Feb. 2015 - C-2-58 Design and Experimental Verification of LPFs Using Microstrip Coupled-line Hairpin Resonators
Ma Zhewang; Tsurumi Junichi; Ohira Masataka
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2015(1) 78 - 78, 24 Feb. 2015 - Design of a Filtering Antenna Based on Parameter-Extraction Method Using Input Reflection Responses
YAMANAKA Kazuma; OHIRA Masataka; MA Zhewang
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 114(392) 117 - 122, 15 Jan. 2015 - Design of a Filtering Antenna Based on Parameter-Extraction Method Using Input Reflection Responses
YAMANAKA Kazuma; OHIRA Masataka; MA Zhewang
IEICE technical report. Electron devices, The Institute of Electronics, Information and Communication Engineers, 114(391) 117 - 122, 15 Jan. 2015 - Design of Dual-Band Bandpass Filters Using Microstrip Stepped-Impedance Stub Resonators
Ubara Naoya; Ma Zhewang; Ohira Masataka; Chen Chun-Ping; Anada Tetuo
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 114(376) 65 - 70, 18 Dec. 2014 - Design of Ultra Wide-Band Bandpass Filters Using Short-Circuited Stubs
Hamano Ryuhi; Ma Zhewang; Ohira Masataka; Chen Chun-Ping; Anada Tetsuo
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 114(376) 125 - 131, 18 Dec. 2014 - Special Talk : Report on 2014 IEEE MTT-S International Microwave Symposium
HIROTA Akimichi; HORIBE Masahiro; OHIRA Masataka; SHIMIZU Takashi; MOTOI Keiichi; KANAYA Koh
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 114(318) 57 - 63, 20 Nov. 2014 - On the Development of a Printed Antenna for Wireless Harness Communications inside Metal-Shielded Environment
OHIRA Masataka
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 114(318) 77 - 82, 20 Nov. 2014 - C-2-59 A Parameter Extraction Method for Transversal Array Filters Having Different External Q Factors at I/O Ports
Ohira Masataka; Ma Zhewang
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2014(1) 82 , 09 Sep. 2014 - C-2-59 A Parameter Extraction Method for Transversal Array Filters Having Different External Q Factors at I/O Ports
Ohira Masataka; Ma Zhewang
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2014(1) 82 - 82, 09 Sep. 2014 - C-2-60 Design of Wideband Bandpass Filters Using Microstrip Stub-Loaded Multimode Resonators
Ma Zhewang; Shigihara Yuki; Ohira Masataka
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2014(1) 83 - 83, 09 Sep. 2014 - 対称及び非対称構造の共振器並列形フィルタ回路のための等価回路パラメータ抽出手法 (光エレクトロニクス)
大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 114(142) 11 - 16, 17 Jul. 2014 - A Parameter-Extraction Technique for Transversal Resonator Array Bandpass Filters with Symmetric Structures
OHIRA Masataka; MA Zhewang
Technical report of IEICE. OPE, The Institute of Electronics, Information and Communication Engineers, 114(144) 11 - 16, 17 Jul. 2014 - A Parameter-Extraction Technique for Transversal Resonator Array Bandpass Filters with Symmetric Structures
OHIRA Masataka; MA Zhewang
Technical report of IEICE. OPE, The Institute of Electronics, Information and Communication Engineers, 114(143) 11 - 16, 17 Jul. 2014 - A Parameter-Extraction Technique for Transversal Resonator Array Bandpass Filters with Symmetric Structures
OHIRA Masataka; MA Zhewang
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 114(141) 11 - 16, 17 Jul. 2014 - Design of Microwave Highpass Filters Using Microstrip Coupled-Line Structures
Tsurumi Junichi; Watanabe Naoto; Ma Zhewang; Ohira Masataka
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 114(111) 23 - 28, 26 Jun. 2014 - A Generation Technique of Transmission Zeros for Multimode Bandpass Filter Using Direct S/L Coupling Produced by Antiparallel Coupling Structure
OHIRA Masataka; MA Zhewang
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 114(45) 25 - 30, 22 May 2014 - Analytical Evaluation of Radiowave Propagation Properties Based on Measured Path Loss in Automotive Engine Compartment
OHIRA Masataka; ANO Susumu; KITAZAWA Shoichi; BAN Hiroshi; KUKUTSU Naoya; KOBAYASHI Kiyoshi
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 113(460) 1 - 6, 04 Mar. 2014 - C-2-89 Transmission-Zero Generation of Dual-mode Filter Using Frequency-Dependent Direct S/L Coupling
Aoyama Hiroyuki; Ohira Masataka; Ma Zhewang
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2014(1) 119 - 119, 04 Mar. 2014 - Analytical Evaluation of Radiowave Propagation Properties Based on Measured Path Loss in Automotive Engine Compartment
大平 昌敬; 阿野 進; 北沢 祥一
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 113(460) 1 - 6, 04 Mar. 2014 - Design of Microwave Lowpass Filters Using Microstrip Coupled-Line Structures
Tsurumi Junichi; Ma Zhewang; Ohira Masataka
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 113(365) 1 - 6, 19 Dec. 2013 - Application of Frequency-Dependent Direct Source/Load Coupling to Design of Dual-mode Loop Resonator Filter with Transmission Zeros
AOYAMA Hiroyuki; OHIRA Masataka; MA Zhewang
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 113(365) 7 - 12, 19 Dec. 2013 - Authors' reply
Masataka Ohira; Zhewang Ma
IEEE Transactions on Microwave Theory and Techniques, 61(12) 4284 - 4285, Dec. 2013, Report scientific journal - A Design Method of Multi-mode Filters with Transmission Zeros Using Synthesis Theory and Parameter Extraction Technique for Transversal Array Network
AOYAMA Hiroyuki; OHIRA Masataka; MA Zhewang
The transactions of the Institute of Electronics, Information and Communication Engineers. C, The Institute of Electronics, Information and Communication Engineers, 96(12) 471 - 479, Dec. 2013 - Improvement on Stopband Property of Compact Waveguide Filters Using Hybrid Resonances and Antiresonances of Cutoff Waveguides and Planar Resonators
MATSUMOTO Takaaki; OHIRA Masataka; MA Zhewang
The transactions of the Institute of Electronics, Information and Communication Engineers. C, The Institute of Electronics, Information and Communication Engineers, 96(12) 524 - 532, Dec. 2013 - A design method of multi-mode filters with transmission zeros using synthesis theory and parameter extraction technique for transversal array network
Aoyama, Hiroyuki; Ohira, Masataka; Ma, Zhewang
IEICE Transactions on Electronics (Japanese Edition), 電子情報通信学会エレクトロニクスソサイエティ, J96-C(12) 471 - 479, Dec. 2013 - Improvement on Stopband Property of Compact Waveguide Filters Using Hybrid Resonances and Antiresonances of Cutoff Waveguides and Planar Resonators
松本 孝章; 大平 昌敬; 馬 哲旺
電子情報通信学会論文誌. C, エレクトロニクス, 電子情報通信学会エレクトロニクスソサイエティ, 96(12) 524 - 532, Dec. 2013 - Special Talk : Report on 2013 IEEE MTT-S International Microwave Symposium
OHIRA Masataka; UEDA Tetsuya; OKAZAKI Hiroshi; KUWATA Eigo; TAKAHASHI Hiroyuki; NAGAI Shotaro; MA Zhewang; YAMANOUCHI Shingo
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 113(307) 51 - 60, 21 Nov. 2013 - 損失を考慮した共振器並列形帯域通過フィルタの等価回路パラメータ抽出法 (環境電磁工学)
大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 113(259) 125 - 130, 24 Oct. 2013 - An Extraction Method of Equivalent-Circuit Parameters for Transversal Resonator Array Bandpass Filters Considering Loss Effects
OHIRA Masataka; MA Zhewang
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, The Institute of Electronics, Information and Communication Engineers, 113(261) 125 - 130, 24 Oct. 2013 - An Extraction Method of Equivalent-Circuit Parameters for Transversal Resonator Array Bandpass Filters Considering Loss Effects
OHIRA Masataka; MA Zhewang
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 113(260) 125 - 130, 24 Oct. 2013 - Design and Measurement of a Lowpass Filter Using a Microstrip Coupled-Line Hairpin Resonator
Tsurumi Junichi; Ma Zhewang; Ohira Masataka; Kobayashi Yoshio
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2013(1) 274 - 274, 03 Sep. 2013 - A New Parameter Extraction Method for Unloaded Q faItors in Transversal Resonator Array Bandpass Filters
Ohira Masataka; Ma Zhewang
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2013(1) 82 - 82, 03 Sep. 2013 - Extraction and Evaluation for Attenuation Factors of Microwave Propagation in Automobile Engine Compartment
Ohira Masataka; Ano Susumu; Kitazawa Shoichi; Ban Hiroshi; Kobayashi Kiyoshi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2013(1) 6 - 6, 03 Sep. 2013 - Design of Microstrip Wideband Bandpass Filters Using Lowpass and Highpass Filters
Akimoto Ryosuke; Ma Zhewang; Ohira Masataka; Chen Chun-Ping; Anada Tetsuo
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2013(1) 84 - 84, 03 Sep. 2013 - An Insertion-Loss Formula for Transversal Resonator Array Bandpass Filters and Its Verification of Theory and Application
OHIRA Masataka; MA Zhewang
Technical report of IEICE. OPE, The Institute of Electronics, Information and Communication Engineers, 113(142) 235 - 240, 18 Jul. 2013 - An Insertion-Loss Formula for Transversal Resonator Array Bandpass Filters and Its Verification of Theory and Application
OHIRA Masataka; MA Zhewang
Technical report of IEICE. OPE, The Institute of Electronics, Information and Communication Engineers, 2013(72) 235 - 240, 18 Jul. 2013 - Experimental Evaluation of Low Loss Microstrip Bandpass Filter Using Composite Resonators
AOYAMA Hiroyuki; OHIRA Masataka; MA Zhewang
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 113(110) 21 - 24, 27 Jun. 2013 - Improvement on Stopband Property of Compact Waveguide Filters with Multiple Transmission Zeros Using Hybrid Resonance of Cutoff Waveguide and Planar Resonator
MATSUMOTO Takaaki; OHIRA Masataka; MA Zhewang
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 113(70) 65 - 70, 30 May 2013 - Improvement of the Frequency Responses of Lowpass Filters Using Microstrip Coupled-Line Hairpin Resonators
Tsurumi Junichi; Ma Zhewang; Ohira Masataka
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 113(70) 71 - 76, 30 May 2013 - B-1-193 Development of Small Antenna for In-Machine Wireless Harness andIts Robustness Evaluation
Ohira Masataka
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2013(1) 193 , 05 Mar. 2013 - C-2-102 A New Formula of Insertion Loss due to Unloaded Q Factors in Transversal Resonator Array Bandpass Filters
Ohira Masataka; Ma Zhewang
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2013(1) 133 - 133, 05 Mar. 2013 - C-2-101 Design of Bandpass Filters with Transmission Zeros Using Synthesis Theory andParameter Extraction Technique for Transversal Array Network
Aoyama Hiroyuki; Ohira Masataka; Ma Zhewang
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2013(1) 132 - 132, 05 Mar. 2013 - B-1-193 Development of Small Antenna for In-Machine Wireless Harness andIts Robustness Evaluation
Ohira Masataka
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2013(1) 193 - 193, 05 Mar. 2013 - Design of Microstrip Bandpass Filters with Multiple Transmission Zeros By Combining Compact Lowpass and Highpass Filters
AKIMOTO Ryosuke; MA Zhewang; OHIRA Masataka; CHEN Chun-Ping; ANADA Tetsuo
Technical report of IEICE. OPE, The Institute of Electronics, Information and Communication Engineers, 2013(1) 65 - 72, 24 Jan. 2013 - 共振器並列形帯域通過フィルタにおける無負荷Q値による挿入損の見積り式
大平昌敬
信学総大, Mar. 2013, 132, 2013 - 共振器並列形帯域通過フィルタにおける無負荷Q値による挿入損の見積り式
大平昌敬
信学総大, Mar. 2013, 132, 2013 - Accurate Design of Bandpass Filters with Transmission Zeros Based on Synthesis Theory of Transversal Array Network
AOYAMA Hiroyuki; OHIRA Masataka; MA Zhewang
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 112(355) 49 - 54, 13 Dec. 2012 - Report on 2012 IEEE MTT-S International Microwave Symposium
SHIMIZU Takashi; OHIRA Masataka; OKAZAKI Hiroshi; CHEN Chun-Ping; NARAHASHI Syouichi; POKHAREL Ramesh; NAMANAKA Koji
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 112(312) 13 - 22, 14 Nov. 2012 - タブ結合マイクロストリップスタブ付きリング共振器の解析およびその特性に関する再検討 (環境電磁工学)
保高 拓哉; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告 : 信学技報, 電子情報通信学会, 112(256) 99 - 104, 25 Oct. 2012 - Analysis of a Tab-Coupled Microstrip Ring Resonator Loaded with Open Stubs and Reexamination of Its Characteristics
HOTAKA Takuya; MA Zhewang; OHIRA Masataka; CHEN Chun-Ping; ANADA Tetsuo
IEICE technical report. Electromagnetic compatibility, The Institute of Electronics, Information and Communication Engineers, 2012(18) 99 - 104, 25 Oct. 2012 - Analysis of a Tab-Coupled Microstrip Ring Resonator Loaded with Open Stubs and Reexamination of Its Characteristics
HOTAKA Takuya; MA Zhewang; MASATAKA Ohira; CHEN Chun-Ping; ANADA Tetsuo
IEICE technical report. Electromagnetic compatibility, The Institute of Electronics, Information and Communication Engineers, 112(256) 99 - 104, 18 Oct. 2012 - Design of Highpass Filters Consisting of Parallel-Connected Microstrip Transmission Line and Coupled-Lines
AKIMOTO Ryosuke; MA Zhewang; OHIRA Masataka
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 112(251) 41 - 46, 11 Oct. 2012 - CS-2-3 Design Method of Transversal Resonator Array Microwave Filter Using External Q factors and Resonant Frequencies of Multiple Resonators
Ohira Masataka; Ma Zhewang
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2012(1) "S - 23"-"S-24", 28 Aug. 2012 - CS-2-3 Design Method of Transversal Resonator Array Microwave Filter Using External Q factors and Resonant Frequencies of Multiple Resonators
Ohira Masataka; Ma Zhewang
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2012(1) "S - 23"-"S-24", 28 Aug. 2012 - A Calculation Method of External Q Factor for Multi-Mode Filter Design Based on Synthesis of Transversal Resonator Array Filter
OHIRA Masataka; MA Zhewang
電気学会研究会資料. EMT, 電磁界理論研究会, The Institute of Electronics, Information and Communication Engineers, 2012(76) 131 - 136, 26 Jul. 2012 - 共振器並列型フィルタ合成による多モードフィルタ設計のための外部Q値の計算方法 (エレクトロニクスシミュレーション)
大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 : 信学技報, 電子情報通信学会, 112(157) 131 - 136, 26 Jul. 2012 - 共振器並列型フィルタ合成による多モードフィルタ設計のための外部Q値の計算方法 (マイクロ波・ミリ波フォトニクス)
大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 : 信学技報, 電子情報通信学会, 112(158) 131 - 136, 26 Jul. 2012 - 共振器並列型フィルタ合成による多モードフィルタ設計のための外部Q値の計算方法 (マイクロ波)
大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 : 信学技報, 電子情報通信学会, 112(155) 131 - 136, 26 Jul. 2012 - A Calculation Method of External Q Factor for Muti-Mode Filter Design Based on Synthesis of Transversal Resonator Array Filter
OHIRA Masataka; MA Zhewang
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 112(158) 131 - 136, 19 Jul. 2012 - A Calculation Method of External Q Factor for Muti-Mode Filter Design Based on Synthesis of Transversal Resonator Array Filter
OHIRA Masataka; MA Zhewang
Technical report of IEICE. OPE, The Institute of Electronics, Information and Communication Engineers, 112(157) 131 - 136, 19 Jul. 2012 - A Calculation Method of External Q Factor for Muti-Mode Filter Design Based on Synthesis of Transversal Resonator Array Filter
OHIRA Masataka; MA Zhewang
Technical report of IEICE. OPE, The Institute of Electronics, Information and Communication Engineers, 112(157) 131 - 136, 19 Jul. 2012 - Design of Multi-Mode Bandpass Filter with Multiple Transmission Zeros Using Transversal Array Configuration of Meander Loop Resonators
大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 : 信学技報, 電子情報通信学会, 112(56) 33 - 38, 24 May 2012 - Design of Multi-Mode Bandpass Filter with Multiple Transmission Zeros Using Transversal Array Configuration of Meander Loop Resonators
OHIRA Masataka; MA Zhewang
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 112(56) 33 - 38, 17 May 2012 - C-2-40 Novel Realization of Bandpass Filter with Multiple Transmission Zeros Using Transversal Array Configuration of Meander Loop Resonators
Ohira Masataka; Ma Zhewang
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2012(1) 81 - 81, 06 Mar. 2012 - C-2-41 Investigation on a New Design Method of Parallel-Coupled Bandpass Filters
Sugimoto Takuya; Ma Zhewang; Ohira Masataka; Kobayashi Yoshio; Chen Chun-Ping; Anada Tetsuo
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2012(1) 82 - 82, 06 Mar. 2012 - C-2-39 Experimental Investigation of Planar-Resonator Loaded Cutoff Waveguide Filter with Multiple Transmission Zeros
Matsumoto Takaaki; Ohira Masataka; Ma Zhewang; Deguchi Hiroyuki; Tsuji Mikio
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2012(1) 80 - 80, 06 Mar. 2012 - Design of a Quasi-Millimeter-Wave Bandpass Filter Using Multilayered SIW Dual-Mode Resonators
Tobita Kazuya; Ma Zhewang; Ohira Masataka
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 111(374) 19 - 24, 11 Jan. 2012 - 多層型SIWデュアルモード共振器を利用した準ミリ波帯帯域通過フィルタの設計 (電子デバイス)
飛田 和哉; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告 : 信学技報, 電子情報通信学会, 111(373) 19 - 24, 11 Jan. 2012 - 多層型SIWデュアルモード共振器を利用した準ミリ波帯帯域通過フィルタの設計
飛田 和哉; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告. MW, マイクロ波, 111(374) 19 - 24, 04 Jan. 2012 - Design of a Quasi-Millimeter-Wave Bandpass Filter Using Multilayered SIW Dual-Mode Resonators
TOBITA Kazuya; MA Zhewang; OHIRA Masataka
電子情報通信学会技術研究報告. MW, マイクロ波, The Institute of Electronics, Information and Communication Engineers, 111(374) 19 - 24, 04 Jan. 2012 - Design of a Quasi-Millimeter-Wave Bandpass Filter Using Multilayered SIW Dual-Mode Resonators
TOBITA Kazuya; MA Zhewang; OHIRA Masataka
IEICE technical report. Electron devices, The Institute of Electronics, Information and Communication Engineers, 111(374) 19 - 24, 04 Jan. 2012 - Design of a Quasi-Millimeter-Wave Bandpass Filter Using Multilayered SIW Dual-Mode Resonators
TOBITA Kazuya; MA Zhewang; OHIRA Masataka
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 111(373) 19 - 24, 04 Jan. 2012 - メアンダループ共振器の並列配置構成を用いた多モード有極形帯域通過フィルタの設計についで
大平昌敬
信学技報, 112(56) 33 - 38, 2012 - Report on 2011 IEEE MTT-S International Microwave Symposium
UEDA Tetsuya; OHIRA Masataka; OKAZAKI Hiroshi; KAYANO Hiroyuki; TSUTSUMI Yukako; NOSAKA Hideyuki; NOTO Hifumi; POKHAREL Ramesh
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 111(313) 15 - 24, 24 Nov. 2011 - Report on 2011 IEEE MTT-S International Microwave Symposium
UEDA Tetsuya; OHIRA Masataka; OKAZAKI Hiroshi; KAYANO Hiroyuki; TSUTSUMI Yukako; NOSAKA Hideyuki; NOTO Hifumi; POKHAREL Ramesh
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 111(313) 15 - 24, 17 Nov. 2011 - Miniaturization of Cutoff Waveguide Filter Using Planar Resonators with Transmission Zeros
松本 孝章; 大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告 : 信学技報, 電子情報通信学会,, 111(250) 107 - 112, 20 Oct. 2011 - Studies on the Characteristics of a Tab-Coupled Microstrip Ring Resonator Loaded with Open Stubs
HOTAKA Takuya; MA Zhewang; OHIRA Masataka
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 111(250) 95 - 100, 13 Oct. 2011 - Design of Compact High-Performance Microstrip Lowpass Filters Using Coupled-Line Hairpin Resonators
SAITO Ryo; MA Zhewang; OHIRA Masataka
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 111(250) 101 - 106, 13 Oct. 2011 - Miniaturization of Cutoff Waveguide Filter Using Planar Resonators with Transmission Zeros
MATSUMOTO Takaaki; OHIRA Masataka; MA Zhewang; DEGUCHI Hiroyuki; TSUJI Mikio
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 111(250) 107 - 112, 13 Oct. 2011 - Resonant characteristic analysis of a new three-mode H-shaped microstrip resonator and design of compact bandpass filters
大平 昌敬; 馬 哲旺
IEICE technical report, 電子情報通信学会, 111(201) 21 - 26, 08 Sep. 2011 - Resonant Characteristic Analysis of a New Three-Mode H-Shaped Microstrip Resonator and Design of Compact Bandpass Filters
OHIRA Masataka; MA Zhewang
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 111(201) 21 - 26, 01 Sep. 2011 - C-2-45 A Three-Mode H-Shaped Microstrip-Line Bandpass Filter with High Skirt Selectivity
Ohira Masataka; Ma Zhewang
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2011(1) 69 , 30 Aug. 2011 - C-2-45 A Three-Mode H-Shaped Microstrip-Line Bandpass Filter with High Skirt Selectivity
Ohira Masataka; Ma Zhewang
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2011(1) 69 - 69, 30 Aug. 2011 - C-2-42 A Compact Cutoff-Waveguide Filter with Multiple Attenuation Poles Using Planar Resonators
Matsumoto Takaaki; Ohira Masataka; Ma Zhewang; Deguchi Hiroyuki; Tsuji Miki
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2011(1) 66 - 66, 30 Aug. 2011 - パラレル結合伝送線路共振器フィルタの新しい設計方法 (環境電磁工学)
杉本 卓也; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告, 電子情報通信学会, 111(64) 39 - 44, 26 May 2011 - スロット装荷パラレル結合マイクロストリップ線路で構成される新しい3モード共振器の特性解析とフィルタ応用 (環境電磁工学)
大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告, 電子情報通信学会, 111(64) 133 - 138, 26 May 2011 - パラレル結合伝送線路共振器フィルタの新しい設計方法 (マイクロ波)
杉本 卓也; 馬 哲旺; 大平 昌敬
電子情報通信学会技術研究報告, 電子情報通信学会, 111(65) 39 - 44, 26 May 2011 - スロット装荷パラレル結合マイクロストリップ線路で構成される新しい3モード共振器の特性解析とフィルタ応用 (マイクロ波)
大平 昌敬; 馬 哲旺
電子情報通信学会技術研究報告, 電子情報通信学会, 111(65) 133 - 138, 26 May 2011 - New design method of parallel-coupled transmission line resonator filters
杉本 卓也; 馬 哲旺; 大平 昌敬
IEICE technical report, 電子情報通信学会, 111(66) 39 - 44, 26 May 2011 - Resonant characteristic analysis of a new three-mode resonator consisting of slot-loaded parallel coupled microstrip lines and its filter application
大平 昌敬; 馬 哲旺
IEICE technical report, 電子情報通信学会, 111(66) 133 - 138, 26 May 2011 - New Design Method of Parallel-Coupled Transmission Line Resonator Filters
SUGIMOTO Takuya; MA Zhewang; OHIRA Masataka; CHEN Chun-Ping; ANADA Tetsuo
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 111(64) 39 - 44, 19 May 2011 - Resonant Characteristic Analysis of a New Three-Mode Resonator Consisting of Slot-Loaded Parallel Coupled Microstrip Lines and Its Filter Application
OHIRA Masataka; MA Zhewang
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 111(66) 133 - 138, 19 May 2011 - New Design Method of Parallel-Coupled Transmission Line Resonator Filters
SUGIMOTO Takuya; MA Zhewang; OHIRA Masataka; CHEN Chun-Ping; ANADA Tetsuo
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 111(64) 39 - 44, 19 May 2011 - Resonant Characteristic Analysis of a New Three-Mode Resonator Consisting of Slot-Loaded Parallel Coupled Microstrip Lines and Its Filter Application
OHIRA Masataka; MA Zhewang
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 111(65) 133 - 138, 19 May 2011 - New Design Method of Parallel-Coupled Transmission Line Resonator Filters
SUGIMOTO Takuya; MA Zhewang; OHIRA Masataka; CHEN Chun-Ping; ANADA Tetsuo
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 111(65) 39 - 44, 19 May 2011 - Resonant Characteristic Analysis of a New Three-Mode Resonator Consisting of Slot-Loaded Parallel Coupled Microstrip Lines and Its Filter Application
OHIRA Masataka; MA Zhewang
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 111(64) 133 - 138, 19 May 2011 - C-2-109 A New Three-Mode Microstrip/Slot-Line Resonator and Bandpass Filter with Multiple Attenuation Poles
Ohira Masataka; Ma Zhewang
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2011(1) 147 - 147, 28 Feb. 2011 - A new type of compact evanescent-mode waveguide bandpass filter using planar dual-behavior resonators
大平 昌敬
Proceedings of Asia-Pacific Microwave Conference, 1 1023 - 1026, 2011 - Design of Waveguide Filter with Multiple Attenuation Poles Using FSS Resonators at Input and Output Coaxial Ports
OHIRA Masataka; MA Zhewang; DEGUCHI Hiroyuki; TSUJI Mikio
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 110(307) 65 - 70, 18 Nov. 2010 - A New Bandpass Filter Consisting of Multi-Pole Dual-Mode FSS Resonators
OHIRA Masataka; MA Zhewang; DEGUCHI Hiroyuki; TSUJI Mikio
電気学会研究会資料. EMT, 電磁界理論研究会, 2010(156) 31 - 36, 13 Nov. 2010 - C-2-48 Coaxial-Excited FSS-Loaded Waveguide Filter with Multiple Transmission Zeros
Ohira Masataka; Ma Zhewang; Deguchi Hiroyuki; Tsuji Mikio
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2010(1) 84 - 84, 31 Aug. 2010 - Investigation of Radio Propagation in Narrow Space in ICT Equipments
KITAZAWA Shoichi; OHIRA Masataka; UMABA Takayuki; BAN Hiroshi; UEBA Masazumi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 110(75) 1 - 6, 03 Jun. 2010 - C-2-53 120GHz-band Monolithic Integrated Antenna Array for Imaging Applications
Ohira Masataka; Ban Hiroshi; Ueba Masazumi; Nakajima Hiroki; Kosugi Toshihiko; Enoki Takatomo
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2010(1) 96 - 96, 02 Mar. 2010 - B-1-3 A Study on Propagation Modeling in Narrow and Complicated Space
Ohira Masataka; Umaba Takayuki; Kitazawa Shoichi; Ban Hiroshi; Ueba Masazumi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2010(1) 3 - 3, 02 Mar. 2010 - B-1-119 Genetic Optimization Design of Loaded Element for Small Monopole Antenna
Ohira Masataka; Ban Hiroshi; Ueba Masazumi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2010(1) 119 - 119, 02 Mar. 2010 - B-17-11 Impact of LPF Configuration of Wireless LAN Node on White Space Recognition Using Averaged Periodgram
Yano Kazuto; Ohira Masataka; Taromaru Makoto; Ueba Masazumi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2010(1) 660 - 660, 02 Mar. 2010 - B-1-2 Measurement results of noise and propagation characteristics inside of ICT Equipments
Kitazawa Shoichi; Ohira Masataka; Umaba Takayuki; Ano Susumu; Ban Hiroshi; Ueba Masazumi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2(1) 2 - 2, 2010 - B-5-182 Design of communication system at physical layer in narrow and complicated space
Umaba Takayuki; Kitazawa Shoichi; Ohira Masataka; Ban Hiroshi; Ueba Masazumi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2010(1) 614 - 614, 2010 - B-5-125 Research and Development of Multi-Gigabit Wireless LAN Systems (32) : A Development of 60GHz Multi-port Switch
KITAZAWA Shoichi; MIURA Amane; OHIRA Masataka; ANO Susumu; UEBA Masazumi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2009(1) 558 - 558, 04 Mar. 2009 - B-5-124 Research and Development of Multi-Gigabit Wireless LAN Systems (31) : High-Gain and Wideband Sector-Switched Antenna Using Closely-Spaced Waveguide Slot Arrays in 60GHz
Miura Amane; Ohira Masataka; Kitazawa Shoichi; Ano Susumu; Ueba Masazumi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2009(1) 557 - 557, 04 Mar. 2009 - B-17-18 A Study on Parameters of DFT-Spread OFDM for Single Carrier DSA System in ISM Band
Yano Kazuto; Ohira Masataka; Suzuki Yasuo; Taromaru Makoto; Ueba Masazumi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 532(1) 532 - 532, 2009 - Experimental evaluation of wideband planar multi-sector switched-beam antenna in 60GHz band
MIURA Amane; OHIRA Masataka; KITAZAWA Shoichi; ANO Susumu; SAITO Shigeru; UEBA Masazumi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 108(341) 57 - 62, 04 Dec. 2008 - Wideband Waveguide Slot Array Consisting of Closely-Spaced Elements for 60GHz Sector Antenna
OHIRA Masataka; MIURA Amane; UEBA Masazumi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 108(304) 91 - 96, 12 Nov. 2008 - B-5-88 Research and Development of Multi-Gigabit Wireless LAN Systems (24) : 60GHz Wideband Slot Array Antenna Consisting of Closely-Spaced Different-Length Elements
Ohira Masataka; Miura Amane; Ueba Masazumi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2008(1) 401 - 401, 02 Sep. 2008 - C-2-75 Improvement of Planar Circuit UWB Filters with Arbitrarily conductor patch and slot elements
Kawasaki Masashi; Deguchi Hiroyuki; Tsuji Mikio; Ohira Masataka
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2008(1) 100 - 100, 02 Sep. 2008 - B-5-89 Research and Development of Multi-Gigabit Wireless LAN Systems (25) : Bandwidth Enhancement of Coaxial Line to Waveguide Transition Using Short-ended Straight Post
Luo Wuqiong; Ohira Masataka; Miura Amane; Ueba Masazumi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2008(1) 402 - 402, 02 Sep. 2008 - B-5-142 Research and Development of Multi-Gigabit Wireless LAN Systems (17) : Experimental Evaluation of Eight-Sector Antenna Using Slot Array Antennas in 60 GHz Band
Ohira Masataka; Tenno Nobuyuki; Miura Amane; Ueba Masazumi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2008(1) 528 - 528, 05 Mar. 2008 - C-2-109 Optimized design of Planar Circuit UWB Filters with Arbitrarily-Shaped DGS
Kido Tadashi; Deguchi Hiroyuki; Tsuji Mikio; Ohira Masataka
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2008(1) 142 - 142, 05 Mar. 2008 - 超高速ギガビット無線LANの研究開発 (24)-素子近接配置による60GHz帯スロットアレーアンテナの広帯域化-
大平昌敬
信学ソ大, Sep. 2008, 401, 2008 - 60GHz帯セクタアンテナのための素子密配置広帯域導波管スロットアレー
大平昌敬
信学技報. A P, アンテナ 伝播, 108(304) 91 - 96, 2008 - 60GHz帯セクタアンテナのための素子密配置広帯域導波管スロットアレー
大平昌敬
信学技報. A・P, アンテナ・伝播, 108(304) 91 - 96, 2008 - 超高速ギガビット無線LANの研究開発 (24)-素子近接配置による60GHz帯スロットアレーアンテナの広帯域化-
大平昌敬
信学ソ大, Sep. 2008, 401, 2008 - Design of Planar Circuit Filters with Arbitrarily-Shaped DGS by Genetic Algorithm
KIDO Tadashi; DEGUCHI Hiroyuki; TSUJI Mikio; OHIRA Masataka
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 107(394) 53 - 58, 11 Dec. 2007 - Optimization of Microstrip-Line Filters with Arbitrarily-Shaped DGS
KIDO Tadashi; DEGUCHI Hiroyuki; TSUJI Mikio; OHIRA Masataka
電気学会研究会資料. : The Papers of Technical Meeting on Electromagnetic Theory, IEE Japan. EMT, 電磁界理論研究会, 2007(115) 37 - 42, 19 Oct. 2007 - Optimization-Design Technique based on GA for Frequency Selective Surfaces with Single Structure Element
OONO Satoshi; DEGUCHI Hiroyuki; TSUJI Mikio; OHIRA Masataka
電気学会研究会資料. : The Papers of Technical Meeting on Electromagnetic Theory, IEE Japan. EMT, 電磁界理論研究会, 2007(81) 191 - 195, 18 Oct. 2007 - Beam/Null Forming by Optimization of Excitation Coefficients and Reactance Values for Inverted-F Multiport Parasitic Array Radiator Antenna
OHIRA Masataka; MIURA Amane; TAROMARU Makoto; UEBA Masazumi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 107(210) 43 - 48, 30 Aug. 2007 - B-1-197 Beam and Null Forming of Inverted-F Multiport Parasitic Array Radiator Antenna : Research and Development of Efficient Spectrum Use in Space Domain
Ohira Masataka; Miura Amane; Taromaru Makoto; Ueda Masazumi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2007(1) 197 - 197, 29 Aug. 2007 - B-1-133 Beam Steering Antenna with Mutual Coupling between Inverted-F Antenna Elements
Ohira Masataka; Miura Amane; Ueba Masazumi; Taromaru Makoto; Ohira Takashi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2007(1) 133 - 133, 07 Mar. 2007 - B-5-130 Research and Development of Multi-Gigabit Wireless LAN Systems : An Experimental Evaluation on a Slot Array Antenna for the Multi-Gigabit WLAN in the 60 GHz Band
Tenno Nobuyuki; Han Qing; Ohira Masataka; Luo Wuqiong; Miura Amane; Ueba Masazumi; Ohira Takashi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2007(1) 544 - 544, 07 Mar. 2007 - C-2-104 Optimization design of planar-circuit bandpass filters with arbitrarily-shaped elements taking account of phase property
Kido Akinori; Deguchi Hiroyuki; Tsuji Mikio; Ohira Masataka
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2007(1) 137 - 137, 07 Mar. 2007 - Optimization Design of Planar-Circuit Bandpass Filters with Arbitrarily-Shaped Elements Taking Account of Phase Property
KIDO Akinori; DEGUCHI Hiroyuki; TSUJI Mikio; OHIRA Masataka
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(515) 85 - 90, 29 Jan. 2007 - Optimization Design of Planar-Circuit Bandpass Filters with Arbitrarily-Shaped Elements Taking Account of Phase Property
KIDO Akinori; DEGUCHI Hiroyuki; TSUJI Mikio; OHIRA Masataka
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 2007(1) 85 - 90, 29 Jan. 2007 - Optimization Design of Planar-Circuit Bandpass Filters with Arbitrarily-Shaped Elements Taking Account of Phase Property
KIDO Akinori; DEGUCHI Hiroyuki; TSUJI Mikio; OHIRA Masataka
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(514) 85 - 90, 29 Jan. 2007 - Optimization Design of Planar-Circuit Bandpass Filters with Arbitrarily-Shaped Elements Taking Account of Phase Property
KIDO Akinori; DEGUCHI Hiroyuki; TSUJI Mikio; OHIRA Masataka
電子情報通信学会技術研究報告. OPE, 光エレクトロニクス, 106(515) 85 - 90, 22 Jan. 2007 - Optimization Design of Planar-Circuit Bandpass Filters with Arbitrarily-Shaped Elements Taking Account of Phase Property
KIDO Akinori; DEGUCHI Hiroyuki; TSUJI Mikio; OHIRA Masataka
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(514) 85 - 90, 22 Jan. 2007 - Optimization Design of Planar-Circuit Bandpass Filters with Arbitrarily-Shaped Elements Taking Account of Phase Property
KIDO Akinori; DEGUCHI Hiroyuki; TSUJI Mikio; OHIRA Masataka
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(513) 85 - 90, 22 Jan. 2007 - Configuration of Inverted-F Antenna Array with Mutual Coupling and Its Equivalent Weight
OHIRA Masataka; MIURA Amane; UEBA Masazumi; TAROMARU Makoto; OHIRA Takashi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(491) 37 - 42, 18 Jan. 2007 - 逆F複数給電パラサイトアレーアンテナのビーム ヌル形成能力-空間軸上周波数有効利用技術の研究開発-
大平昌敬
信学ソ大, Sep. 2007, 2007 - 位相特性を考慮した任意形状平面回路素子による帯域通過フィルタの設計
城戸昭則; 出口博之; 辻幹男; 大平昌敬
電気関係学会関西支部連合大会講演論文集(CD-ROM), 2006 G8-22 , 15 Nov. 2006 - 有極特性を持つ金属窓を装荷したミリ波導波管帯域通過フィルタ
河合圭史; 出口博之; 辻幹男; 大平昌敬
電気関係学会関西支部連合大会講演論文集(CD-ROM), 2006 G8-23 , 15 Nov. 2006 - A Novel Waveguide Bandpass Filter with Multiple Attenuation Poles Using Four-Armed Square-Loop FSSs
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
The IEICE transactions on electronics C, The Institute of Electronics, Information and Communication Engineers, 89(7) 458 - 465, 01 Jul. 2006 - Planar-Circuit Bandpass Filters Consisting of Arbitrarily-Shaped Elements
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
The IEICE transactions on electronics C, The Institute of Electronics, Information and Communication Engineers, 89(5) 274 - 281, 01 May 2006 - C-2-55 Waveguide Bandpass Filter Constructed by Windows Having Two Attenuation Poles
Ohira Masataka; Deguchi Hiroyuki; Tsuji Mikio
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2006(1) 86 - 86, 08 Mar. 2006 - Planar-Circuit Filters with Arbitrarily-Shaped Elements Optimized by Genetic Alogorithm
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
電気学会研究会資料. : The Papers of Technical Meeting on Electromagnetic Theory, IEE Japan. EMT, 電磁界理論研究会, 2005(83) 29 - 34, 18 Nov. 2005 - Bandpass Waveguide Filter Constructed by Windows Having Resonant Characteristic with Attenuation Poles
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 105(369) 63 - 68, 28 Oct. 2005 - Bandpass Waveguide Filter Constructed by Windows Having Resonant Characteristic with Attenuation Poles
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEICE technical report. Electromagnetic compatibility, The Institute of Electronics, Information and Communication Engineers, 105(367) 63 - 68, 21 Oct. 2005 - C-2-77 A Planar-Circuit Filter Constructed by Arbitrarily-Shaped Elements
Ohira Masataka; Deguchi Hiroyuki; Tsuji Mikio; Shigesawa Hiroshi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2005(1) 98 - 98, 07 Sep. 2005 - C-2-112 A Waveguide Filter with Multiple Attenuation Poles Using Four-Armed Square-Loop FSS
Ohira Masataka; Deguchi Hiroyuki; Tsuji Mikio; Shigesawa Hiroshi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2005(1) 133 - 133, 07 Sep. 2005 - A Planar Circuit Filter with Arbitrarily-Shaped Elements Generated by Genetic Algorithm
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 105(181) 59 - 64, 08 Jul. 2005 - A Planar Circuit Filter with Arbitrarily-Shaped Elements Generated by Genetic Algorithm
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
Technical report of IEICE. OPE, The Institute of Electronics, Information and Communication Engineers, 105(183) 59 - 64, 08 Jul. 2005 - Waveguide Filter with Multiple Attenuation Poles Using Armed Square-Loop FSS
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 105(60) 19 - 24, 12 May 2005 - A Design Method of Waveguide Filter with Closely-Spaced Frequency Selective Surfaces
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 105(34) 15 - 20, 20 Apr. 2005 - A Design Method of Waveguide Filter with Closely-Spaced Frequency Selective Surfaces
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
Technical report of IEICE. SCE, The Institute of Electronics, Information and Communication Engineers, 105(33) 15 - 20, 20 Apr. 2005 - B-1-162 Improvement of Radiation Characteristics for Dual-Polarized Elliptical-Beam Multi-Step Horn
Urata Hirotsugu; Ohira Masataka; Deguchi Hiroyuki; Tsuji Mikio; Shigesawa Hiroshi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2005(1) 162 - 162, 07 Mar. 2005 - C-2-109 Experimental Verification of Waveguide Filter with Frequency Selective Surfaces
Ohira Masataka; Deguchi Hiroyuki; Tsuji Mikio; Shigesawa Hiroshi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2005(1) 142 - 142, 07 Mar. 2005 - Design of Waveguide Filter with Frequency Selective Surfaces and Its Experimental Verification
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEICE technical report. Electron devices, The Institute of Electronics, Information and Communication Engineers, 104(549) 37 - 42, 10 Jan. 2005 - Design of Waveguide Filter with Frequency Selective Surfaces and Its Experimental Verification
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 104(551) 37 - 42, 10 Jan. 2005 - Analysis of frequency selective surface with arbitrarily shaped element by equivalent circuit model
M Ohira; H Deguchi; M Tsuji; H Shigesawa
ELECTRONICS AND COMMUNICATIONS IN JAPAN PART II-ELECTRONICS, 88(6) 9 - 17, 2005 - Analysis of Frequency Selective Surface with Arbitrarily-Shaped Element by Equivalent Circuit Model
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
The IEICE transactions on electronics C, The Institute of Electronics, Information and Communication Engineers, 87(12) 1030 - 1037, 01 Dec. 2004 - Cutoff-Waveguide Filter with Arbitrarily-Shaped Resonant Elements
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
電気学会研究会資料. : The Papers of Technical Meeting on Electromagnetic Theory, IEE Japan. EMT, 電磁界理論研究会, 2004(52) 31 - 36, 28 Sep. 2004 - Optimization Design of Elliptical Beam Sectral Horn Based on Mode Coefficients at Aperture
URATA Hirotsugu; OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
電気学会研究会資料. : The Papers of Technical Meeting on Electromagnetic Theory, IEE Japan. EMT, 電磁界理論研究会, 2004(52) 61 - 66, 28 Sep. 2004 - Design of Waveguide Filter with Frequency Selective Surfaces Based on Genetic Algorithm
OHIRA MASATAKA; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 104(201) 113 - 118, 14 Jul. 2004 - Design of Waveguide Filter with Frequency Selective Surfaces Based on Genetic Algorithm
OHIRA MASATAKA; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
Technical report of IEICE. OPE, The Institute of Electronics, Information and Communication Engineers, 104(210) 113 - 118, 14 Jul. 2004 - Design of Waveguide Filter with Frequency Selective Surfaces Based on Genetic Algorithm
OHIRA MASATAKA; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
Technical report of IEICE. SAT, The Institute of Electronics, Information and Communication Engineers, 104(204) 113 - 118, 14 Jul. 2004 - Design of Waveguide Filter with Frequency Selective Surfaces Based on Genetic Algorithm
OHIRA MASATAKA; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 104(207) 113 - 118, 14 Jul. 2004 - Extraction Method of Equivalent-Circuit Parameters of Frequency Selective Surface Based on Eigenvalue Analysis
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 104(46) 1 - 6, 07 May 2004 - Optimization of Sidewall Taper Configuration for Elliptical Beam Sectral Horn
URATA Hirotsugu; OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 104(46) 29 - 34, 07 May 2004 - C-2-114 Optimization Design of Waveguide Bandstop Filter with Arbitrarily-Shaped Aperture Irises
Ohira Masataka; Deguchi Hiroyuki; Tsuji Mikio; Shigesawa Hiroshi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2004(1) 149 - 149, 08 Mar. 2004 - GAによる周波数選択板装荷導波管フィルタの設計
大平昌敬
信学技報, 2004 113 - 118, 2004 - GAによる周波数選択板装荷導波管フィルタの設計
大平昌敬
信学技報, 2004 - 任意形状の結合窓を有する方形導波管の解析
大平昌敬
信学技報, 2003 25 - 30, 2004 - GAによる周波数選択板装荷導波管フィルタの設計
大平昌敬
信学技報, 2004 - An Analysis of Rectangular Waveguide with Arbitrarily-Shaped Iris
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 103(534) 25 - 30, 12 Dec. 2003 - Multiband Frequency Selective Surface Designed by Genetic Algorithm with Varying Sampling-Frequency Points
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
電気学会研究会資料. EMT, 電磁界理論研究会, 2003(54) 7 - 12, 19 Nov. 2003 - An Equivalent-Circuit Model of Patch-Type Frequency Selective Surface Based on Eigen Current Distributions
Ohira Masataka; Deguchi Hiroyuki; Tsuji Mikio; Shigesawa Hiroshi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2003(1) 129 - 129, 10 Sep. 2003 - Equivalent-Circuit Modeling Technique and Design of Frequency Selective Surface Embedded in Dielectric
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 103(287) 43 - 48, 03 Sep. 2003 - A Singular Resonant Phenomenon of Patch-Type Frequency Selective Surfaces
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
電気学会研究会資料. EMT, 電磁界理論研究会, 2003(27) 19 - 24, 30 Jul. 2003 - Multiband Single-layer FSS Optimized by Varying Sampling Frequency Points Based on Genetic Algorithm
Ohira Masataka; Deguchi Hiroyuki; Tsuji Mikio; Shigesawa Hiroshi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2003(1) 220 - 220, 03 Mar. 2003 - Multiband Single-layer Frequency Selective Surface designed by Optimization Technique
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEEJ Transactions on Fundamentals and Materials, The Institute of Electrical Engineers of Japan, 123(3) 253 - 258, 01 Mar. 2003 - 任意形状の結合窓を有する方形導波管の解析
大平昌敬
信学技報, 2003 25 - 30, 2003 - On the Behavior of the Dual-resonant Frequency Selective Surface with Novel-shaped Single-element Patch Array.
大平昌敬; 出口博之; 辻幹男; 繁沢宏
電気学会電磁界理論研究会資料, EMT-02(104-114) 47 - 52, 24 Oct. 2002 - A Efficient Design Method of Dual-resonant Frequency Selective Surface Using Genetic Algorithm
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 102(70) 11 - 18, 15 May 2002 - 評価周波数点可変によるFSS最適化設計
大平昌敬
信学会春季全大, March 2002, 2002 - Single-layer Frequency Selective Surface with the Broadband Reflection Property : Micro-GA Design
OHIRA Masataka; DEGUCHI Hiroyuki; TSUJI Mikio; SHIGESAWA Hiroshi
電気学会研究会資料. : The Papers of Technical Meeting on Electromagnetic Theory, IEE Japan. EMT, 電磁界理論研究会, 2001(110) 19 - 24, 01 Nov. 2001
Books etc
Presentations
- Neural Network Assisted Microwave Filter Design
IEEE MTT-S Kansai Chapter Workshop, 04 Sep. 2021, 04 Sep. 2021, 04 Sep. 2021, Invited oral presentation - Future Microwave Circuit Design Assisted by Neural Networks - Microwave Planar Filter Design as an Example-
Masataka Ohira
Global Symposium on Millimeter Waves (GSMM) 2019, 24 May 2019, Invited oral presentation - Microwave planar bandpass filter design for student design competition
M. Ohira
Tutorial Session of 2016 Thailand-Japan MicroWave (TJMW2016), 11 Jun. 2016, Invited oral presentation - Introduction to Theory, Analysis, and Design of Microwave Filters in New Era of Wireless
Masataka Ohira
Microwave Workshops & Exhibition (MWE 2015), 25 Nov. 2015, Public discourse, Pacifico Yokohama - A parameter-extraction method for transversal resonator array bandpass filters and its applications to multi-mode filter designs
Masataka Ohira
2014 Asia-Pacific Microwave Conference (APMC 2014), 04 Nov. 2014, Nominated symposium, IEICE, Sendai, Japan - Fundamentals of Microwave Filters: Synthesis Theory and Design Techniques
H. Kayano; M. Ohira
TJMW 2013 Tutorial Session, 02 Dec. 2013, Public discourse, Bangkok, Thailand - A Parameter-Extraction Method for Microwave Transversal Resonator Array Filters and Its Applications to Multi-Mode Filter Designs
M. Ohira; H. Aoyama; Z. Ma
Microwave Workshops & Exhibition (MWE2013), 29 Nov. 2013, Nominated symposium, パシフィコ横浜 展示ホール / アネックスホール - Genetic Algorithm Design for Applications to Microwave Filters and Antennas
Masataka Ohira
TJMW2012 (Thailand-Japan MicroWave) Tutorial Session, 07 Aug. 2012, Public discourse, Bangkok, Thailand - Filters with Multiple Attenuation Poles Using Frequency Selective Surfaces
M. Tsuji; M. Ohira
Microwave Workshops & Exhibision (MWE2005), 11 Nov. 2005, Nominated symposium
Works
- Synfornee
Masataka Ohira
・仕様から有極フィルタ（一般化チェビシェフ関数特性のBPF/BSF）の結合行列の合成が行えます． ・SYN4NEE Advanced Filter Editionからインターフェイスを刷新 ・動作の高速化, Software, 2017/10 - Synfornee Lite
Masataka Ohira
・仕様から無極フィルタ（バターワース特性またはチェビシェフ特性の共振器直結形フィルタ回路）の回路合成が行えます． ・SYN4NEE Classical Filter Editionからインターフェイスを刷新 ・動作の高速化, Software, 2017/10
Industrial Property Rights
- Patent right
平面アンテナ
清水 聡, 佐久間 和司, 芹澤 和伸, 鈴木 義規, 大平 昌敬
特願2020-185027, 特開2022-074722, 特許7627885, 株式会社国際電気通信基礎技術研究所, 国立大学法人埼玉大学 - Patent right
チューナブルフィルタリングアレーアンテナ
大平 昌敬, 山田 暁弘, 小野 豊, 比留間 利通
特願2020-019734, 特開2021-125844, 特許7378899, 国立大学法人埼玉大学, 日本アンテナ株式会社 - Patent right
アンテナモジュールおよびそれを搭載した通信装置
大平昌敬, 須藤薫, 田口義規
特願2019-205205, 特許7209314, 埼玉大学, 村田製作所 - Patent right
記録された画像データの識別
桑原教彰, 宮里勉, 光永法明, 門林理恵子, 大平昌敬
記録された画像データの識別のための技術が概して説明される。種々の例では、モバイルデバイスは、受信機、メモリおよびプロセッサを含んでもよい。受信機は、信号送信をモバイルデバイスに近接して位置する監視装置から受信するように構成されてもよく、監視装置からの信号送信は、カメラＩＤを含む。プロセッサは、受信機から受信されたカメラＩＤをタイムスタンプと関連付けてメモリに記憶し、ユーザ指定基準と関連付けられた少なくとも１つのカメラＩＤを識別する要求を受信し、ユーザ指定基準と実質的に一致する１つまたは複数のカメラＩＤを識別するために、受信機およびメモリの動作を調整するように構成されてもよい。いくつかのさらなる例では、モバイルデバイスはまた、モバイルデバイスに近接すると決定された１つまたは複数の監視装置によって取り込まれた画像信号を、ユーザ指定基準に含めることができるユーザ指定時間において受信するように構成されてもよい。そのような画像信号は、ビデオ画像、静止画像またはオーディオ－ビデオ画像のうちの１つまたは複数に対応してもよい。, 特願2016-556015, 特表2017-516331, 特許6393771 - Patent right
Dispatch of automated external defibrillators
Rieko Kadobayashi, Tsutomu Miyasato, Noriaki Kuwahara, Masataka Ohira, Noriaki Mitsunaga
Technologies are generally described for an automated external defibrillator (AED) dispatch system. In various examples, the AED dispatch system may include a receiver, a vehicle determination unit, and a transmitter. The receiver may be configured to receive, from a first device, a request message that includes first location information that indicates a location of the first device, and also receive, from one or more of second devices, one or more report messages, each of which includes second location information that indicates a location of the corresponding one of the second devices. The vehicle determination unit may be configured to select a vehicle to be dispatched based at least in part on the first location information and the respective second location information. The transmitter may be configured to transmit an instruction message to the second device associated with the selected vehicle to be dispatched., 特願US14/917278, 特開US20160217691 - Patent right
User Authentication Using Voice and Image Data
Tsutomu Miyasato, Noriaki Kuwahara, Rieko Kadobayashi, Masataka Ohira, Noriaki Mitsunaga
Techniques are generally described for user authentication. Example techniques may include providing a data set including audio data and image data, wherein the audio data includes voice recordings of multiple people, wherein the image data includes at least a facial image of at least one of the multiple people, receiving a response to the data set from a user device, and determining whether the received response corresponds to at least a part of content of the voice recording of the one of the multiple people whose facial image is included in the image data., 特開US20160019380 - Patent right
モバイル端末装置、電力伝送システム、およびコンピュータ可読記憶媒体
大平昌敬, 河野みちよ
モバイル端末装置が、電波を受信する複数のアンテナと、ダイバーシチ技法を使用してその複数のアンテナによって受け取られた電波の電力を受け取るレシーバ回路と、モバイル端末装置に結合された充電可能なバッテリを、そのレシーバ回路によって受け取られた電波の電力で充電する充電ユニットとを含むことが可能である。, 特願2014-516527, 特表2014-532387, 特許5847931 - Patent right
Identification of recorded image data
Noriaki Kuwahara, Tsutomu Miyasato, Noriaki MITSUNAGA, Rieko Kadobayashi, Masataka Ohira
echnologies are generally described for identification of recorded image data. In various examples, a mobile device may include a receiver, a memory and a processor. The receiver may be configured to receive a signal transmission from a surveillance apparatus located proximate to the mobile device, and the signal transmission from the surveillance apparatus includes a camera ID. The processor may be configured to coordinate operation of the receiver and the memory to: store the camera ID received from the receiver in association with a timestamp in the memory; receive a request to identify at least one camera ID associated with a user specified criteria; and identify one or more camera IDs that substantially match the user specified criteria. In some further examples, the mobile device may also be configured to receive image signals captured by one or more surveillance apparatuses that are determined to be proximate to the mobile device at a user specified time, which may be included in the user specified criteria. Such image signals may correspond to one or more of video images, still images, or audio-video images., PCT/US2014/031522, WO2015142359 A1 - Patent right
Mobile terminal, power transfer system and computer-readable storage medium
Masataka Ohira, Michiyo Kono
A mobile terminal may include a plurality of antennas to receive radio waves, a receiver circuit to receive power of the radio waves received by the plurality of antennas using a diversity technique, and a charging unit to charge a rechargeable battery coupled to the mobile terminal by the power of the radio waves received by the receiver circuit., US 20130310117 A1, 特許US9037197 - Patent right
アンテナ装置およびそれを備えた受信機
大平 昌敬, 馬場 隆行, 太郎丸 眞, 岡田 広毅, 岸 孝彦, 中尾 文章, 中野 万作
パワーインバージョン手段３０は、判定手段６０によって干渉波が検出されると、干渉波の周波数帯を有する受信電波に基づいて、干渉波の方向にヌルを形成するときのウェイトを演算し、その演算したウェイトが得られるときの振幅Ａｉ（１≦ｉ≦Ｋ）および位相φｉを演算する。スイッチ制御手段４０は、閾値Ｉｔｈよりも大きい振幅Ａ１〜Ａｎのウェイトを有するアンテナ１〜ｎに対応付けられたｎ個のスイッチをオンし、（Ｋ−ｎ）個のスイッチをオフする。最適位相生成手段５０は、振幅Ａ１〜Ａｎに対応する位相φ１〜φｎを初期位相値として開始し、所望波の到来方向から受信した受信電波の希望信号対干渉雑音電力比が基準値以上になるようにｎ個の可変移相器に設定するｎ個の位相を最適化する。, 特願2010-110391, 特開2011-239293, 特許5401726, 株式会社国際電気通信基礎技術研究所, トヨタ自動車株式会社, 株式会社トヨタIT開発センター - Patent right
アンテナ装置およびそれを備えた受信機
大平 昌敬, 馬場 隆行, 太郎丸 眞, 岡田 広毅, 岸 孝彦, 中尾 文章, 中野 万作
副アンテナ装置２０は、可変移相器２１〜２Ｋの位相を制御してアンテナ１〜Ｋから放射される放射ビームの指向性を順次変化させて干渉波を検出するとともに、干渉波の到来方向を検出する。そして、主アンテナ装置１０は、副アンテナ装置２０から干渉波を検出したことを示す干渉波検出信号を受けると、可変移相器１１〜１Ｋの位相を制御して副アンテナ装置２０から受けた干渉波の到来方向にヌルを形成した放射ビームを形成し、電波を受信する。, 特願2010-110442, 特開2011-239297, 特許5347120, 株式会社国際電気通信基礎技術研究所, トヨタ自動車株式会社, 株式会社トヨタIT開発センター - Patent right
アンテナ装置
大平 昌敬, 三浦 周, 太郎丸 眞, 上羽 正純
アンテナ装置１０は、地板１と、ループ線路２と、導体線路３～６と、可変リアクタンス素子７～９と、給電部１１とを備える。ループ線路２は、間隙部２１を有し、地板１から所定の距離だけ離れ、かつ、地板に略平行な平面内に配置される。導体線路３は、ループ線路２の一方端２Ａと給電部１１との間に接続される。導体線路４は、ループ線路２の他方端２Ｂと地板１との間に接続される。導体線路５は、導体線路３と地板１との間に接続される。導体線路６は、導体線路４と地板１との間に接続される。可変リアクタンス素子７～９は、それぞれ、間隙部２１から反時計回りに９０度、２７０度および１８０度の位置においてループ線路２に装荷される。, 特願2008-008124, 特開2009-171313, 特許5223129, 株式会社国際電気通信基礎技術研究所 - Patent right
アンテナ装置およびそれを備えた無線装置
大平 昌敬, 馬場 隆行, 北沢 祥一, 伴 弘司, 上羽 正純
アンテナ装置１０は、地板１と、給電線路２と、導体線路３，４とを備える。給電線路２は、ｚ軸に沿って地板１に略垂直に配置される。導体線路３は、略Ｌ字形状を有し、導体線路３１，３２からなる。導体線路３１は、ｚ軸に沿って地板１に略垂直に配置される。導体線路３２は、ｘ軸に沿って地板１に略平行に配置され、導体線路４と直交する。導体線路４は、略Ｌ字形状を有し、導体線路４１，４２からなる。導体線路４１は、ｚ軸に沿って地板１に略垂直に配置される。導体線路４２は、ｘ軸に沿って地板１に略平行に配置され、導体線路３と直交する。導体線路３，４の各々は、電波の波長の略４分の１に等しい長さを有する。, 特願2010-052257, 特開2011-188307, 株式会社国際電気通信基礎技術研究所 - Patent right
低姿勢型アンテナ構造体
大平 昌敬, ロ ウチョン, 太郎丸 眞, 三浦 周, 齋藤 茂, 上羽 正純, 大平 孝
Y軸上に原点を挟んでλ/4離間して逆F型アンテナ構造の給電素子11、12が配置され、X軸上に原点を挟んでλ/4離間して逆F型アンテナ構造の無給電素子13、14が配置され、給電素子11、12には、給電素子間において所望する位相差をもたせて給電する給電回路21、22が接続され、無給電素子13、14には、それぞれに可変リアクタ23、24が接続され、リアクタンス値に応じて各無給電素子の電気長を変更できる。, 特願2007-220347, 特開2008-193655, 特許4807705, 株式会社国際電気通信基礎技術研究所 - Patent right
Low-profile antenna structure
Masataka Ohira, Wuqiong Luo, Makoto Taromaru, Amane Miura, Shigeru Saito, Masazumi Ueba, Takashi Ohira
A low-profile antenna structure can control its directivity with great flexibility. Excited elements 11 and 12 are symmetrically arranged on a y-axis, whereas parasitic elements 13 and 14 are symmetrically arranged on an x-axis, with respect to an origin. The excited elements, as well as the parasitic elements, each have an inverted-F antenna structure and are a distance of .lamda./4 apart from each other. Feed circuits 21 and 22 are respectively connected to and feed signals to the excited elements 11 and 12, such that phases of the signals to be fed are different from each other by a desired degree. Variable reactors 23 and 24 (i) are respectively connected to the parasitic elements 13 and 14, and (ii) in accordance with reactance values thereof, can each change an electrical length of the corresponding one of the parasitic elements., 特願11/969762, 特許US7956815 - Patent right
アンテナ装置およびそれを備えたアレーアンテナ装置
大平 昌敬, 三浦 周, 上羽 正純
アンテナ装置１０は、スロット素子１〜４と、導波管５と、地板６とを備える。スロット素子１〜４は、導波管５の一主面に略平行に配置され、終端面５Ｃから給電面５Ｂへ向かうに従って長さｌｉが長くなっている。スロット素子１は、終端面５Ｃから距離ｄの位置に配置される。スロット素子２〜４は、それぞれ、スロット素子１〜３との間隔がｇになるように配置される。そして、スロット素子１〜４の各々は、同じ幅ｗｉを有する。導波管５は、長さＬ、幅ｗｇおよび高さｔの平板形状からなる。地板６は、導波管５の上面５Ａに導波管５に接して配置される。この場合、導波管５の終端面５Ｃと地板６の端との距離は、ｐに設定される。, 特願2008-212749, 特開2010-050700, 株式会社国際電気通信基礎技術研究所 - Patent right
Waveguide and attenuation pole waveguide bandpass filter
Mikio Tsuji, Hiroyuki Deguchi, Masataka Ohira
A waveguide and an attenuation pole waveguide bandpass filter with a simple structure without any additional structure such as a negative cross coupling between resonators. The attenuation pole waveguide bandpass filter arranged at right angle to the longitudinal direction (radio wave propagation direction) is composed only of conductors. The conductor comprises depressions each opening outwardly and having a non-conducting region which continues from the inside of the opening section to the outside, and a window in the conductor section between these opposed depressions. In an alternative embodiment, such conductor shall be covered by a dielectric such as a resin., 特願11/665337, 特許US7538640 - Patent right
導波管、および、有極形帯域通過導波管フィルタ
辻 幹男, 出口 博之, 大平 昌敬
導波管の長手方向(電波伝搬方向)に対して垂直に設けられる有極形帯域通過導波管フィルタ20において、有極形帯域通過導波管フィルタ20を導体40で構成し、その導体40に、それぞれ外側に向かって開口し、かつ、その開口部分の内側領域から外側側方に連続する非導体領域を設けるようにした凹部410と、これらの対向する凹部410の間における導体部分に設けた窓部420とを有するようにした。また、第二の実施の形態では、このような導体を樹脂などの誘電体で覆うようにする。, 特願2005-247310, 特開2006-279916, 学校法人同志社
Research Projects
- マイクロ波フィルタの自動設計のための強化学習手法の研究開発
大平 昌敬
日本学術振興会, 科学研究費助成事業, 2025/04 -2029/03, 基盤研究(C), 同志社大学 - 深層学習によるマイクロ波平面フィルタの逆設計法の研究開発
大平 昌敬
マイクロ波帯域通過フィルタ（BPF）の形状自動設計を実現するために、昨年度提案した手法を改善すべく2023年度は強化学習アルゴリズム等の見直しを行い、以下の研究実績を上げた。 (I) 深層強化学習を用いたBPFの自動設計：昨年度は深層Qネットワークを用いて複数の仕様の設計過程を一つのニューラルネットワーク（NN）で学習する手法を提案した。しかし、この手法では構造調整量を離散値でしか表現することができず、構造調整の回数や設計可能なフィルタ構造が調整量の刻み幅に依存するという課題があった。そこで2023年度は、強化学習アルゴリズムとしてDDPG（Deep Deterministic Policy Gradient method）を導入した。DDPGを用いれば構造調整量を連続値で表現できるため、構造調整回数を大幅に減らすことができる。この手法と昨年度の提案手法を併用することによって、共振器3段のマイクロストリップBPFを例に中心周波数2.90～3.10 GHz、比帯域幅4～6％の範囲で自動設計が可能なNNを構築した。この範囲で2000通り以上の仕様についてBPFを設計した結果、すべての場合で設計に成功し、本自動設計は初期値依存性が低く高速設計が可能であることを示した。 (II) 高速特性計算のための代理モデルの構築：深層強化学習の学習時間短縮には高速にBPFの特性計算を実行するための代理モデルが必須である。しかし、それを構築するためには電磁界解析による教師データの生成が必要であり、それに要する時間が問題であった。そこで、解析時間は短いが解析精度の低いデータを用いてNNを一度構築した後、解析時間は長いが解析精度の高いデータを用いて出力を補正するという代理モデルを提案した。提案法の適用例として3段マイクロストリップBPFを対象に代理モデルを構築し、提案法の有効性を検証した。, 日本学術振興会, 科学研究費助成事業 基盤研究(C), 2022/04 -2025/03, 基盤研究(C), 埼玉大学 - Research and development on automated design method of microwave bandpass filters using neural network
Ohira Masataka
In this study, an automatic design method using both a forward model and an inverse model constructed by a neural network has been proposed to realize automation of the design of microwave bandpass filters (BPFs). In the proposed design method, initial values of structural parameters of BPF to be designed are first estimated with high accuracy from design specifications by the inverse model, and then the structural parameters are optimized with the help of fast calculation of frequency responses using the forward model. Furthermore, this study has also proposed a framework for reinforcement learning using a deep Q-network to acquire design techniques with a computing machine. The effectiveness of the proposed design methods has been demonstrated through design examples of a fifth-order microstrip BPF., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2019/04 -2022/03, Grant-in-Aid for Scientific Research (C), Saitama University - ミリ波帯におけるロボット等のワイヤフリー化に向けた無線制御技術の研究開発
総務省, 電波資源拡大のための研究開発, 2019/04 -2022/03, 国際電気通信基礎技術研究所，千葉大学，埼玉大学 - Research and Development on On-chip Wideband Filtering Antennas for Millimeter-wave-band High-speed Wireless Communication
Masataka Ohira; MA Zhewang
In this research, an effective design method of wideband filtering antenna (filtenna) has been established for the first time by the introduction of wideband filter synthesis theory to a wideband antenna design, enabling a co-design of wideband filter and antenna. Furthermore, a microstrip filtenna having a fractional bandwidth 20% has been designed and tested. It can be confirmed that a specified wideband characteristic is achieved by the fabricated filtenna, which proves the effectiveness of the proposed design method., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), 2016/04 -2019/03, Grant-in-Aid for Young Scientists (B), Saitama University - ニューラルネットワークによるマイクロ波バンドパスフィルタの自動設計技術の研究開発
大平 昌敬
(一財)テレコム先端技術研究支援センター, 研究費助成, 2017/04 -2019/03, Principal investigator, Competitive research funding - 周波数選択特性を再構成可能なマイクロ波帯バンドパスフィルタデバイスの創出
大平 昌敬
村田学術振興財団, 研究助成金, 2016/06, Principal investigator, Competitive research funding - ミリ波帯超高速ワイヤレス通信用オンチップ型広帯域フィルタリングアンテナの研究開発
大平 昌敬
文部科学省, 科学研究費補助金(若手研究(B)), 2016/04, Principal investigator, Competitive research funding - Studies on 60GHz Millimeter-Wave Wideband Bandpass Filters for Future Ultra-High Speed Wireless Communications
MA Zhewang; KOBAYASHI Yoshio; OHIRA Masataka
Novel microstrip multi-mode resonators with multiple transmission zeros are proposed and used to develop compact high-performance millimeter-wave wideband bandpass filters (BPFs). A BPF with a fractional bandwidth (FBW) of 20% at 25GHz and a BPF with a FBW of 10% at 60GHz are designed respectively, and both BPFs realize the desired wide passband, sharp skirt property, and very wide stopband. A rigorous synthesis theory of wideband BPFs using microstrip short-circuited stubs is proposed and a design method of the filter using optimization method is developed. A novel wideband BPF using both short-circuited and an open-ended stubs is also proposed to produce multiple transmission zeros in its stopband. A BPF with a FBW of 40% is designed and fabricated, and the measured response shows the expected excellent performance. Finally, to improve the stopband characteristics of wideband BPFs, compact microstrip lowpass filters are proposed and their design methods are developed., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 2013/04 -2016/03, Grant-in-Aid for Scientific Research (C), Saitama University - 次世代ホワイトスペース無線通信向け超小型・高選択性バンドパスフィルタの研究
大平 昌敬
公益財団法人 大川情報通信基金, 研究助成, 2015/03 -2016/03, Principal investigator, Competitive research funding - 装置内ハーネスの無線化を実現する低遅延多元接続通信技術の研究開発
本研究では車載ハーネスの中でも特にICT化によって数量が増大しつつあり、軽量化に効果的と思われるセンサ用のハーネスに焦点を絞ることにする。その場合の基本要件は、多数のセンサのリアルタイムモニタリングを実現する低遅延多元接続無線技術、上位の車載ネットワークの標準化動向との整合性、利用シーンにおける耐干渉性（セキュリティ）となる。これらの要件を前提としつつ、熱環境の問題からもハーネスの無線化の要請が高いエンジンルーム（ER）を主対象として、電波伝搬の詳細な測定・分析、車両内伝搬の基礎的特性の解明、高周波回路シミュレーションや電磁界解析の結果等に基づく通信方式の検討、実車両を用いた通信方式の仮説検証実験を行い、最終的に、システム遅延0.5 ms、ノード数200、通信速度10 Mbps/Chを満足しかつ耐干渉性の高い無線通信の基本技術を確立する。, Ministry of Internal Affairs and Communications, Strategic Information and Communications R&D Promotion Programme, 2012/07 -2015/03, Competitive research funding - Development of Frequency Selective Multifunction Surface and Its Application to Millimeter-wave Filters
OHIRA Masataka
A new planar resonator called frequency-selective multifunction surfaces has been proposed for the development of cutoff-waveguide bandpass filters indispensable for a next-generation millimeter-wave wireless communication. To verify its effectiveness, the proposed resonators were applied to the design of a bandpass filter. As a result, the designed bandpass filter realizes a third-order Chebyshev passband response with 2% bandwidth as well as a wide stopband with 12GHz bandwidth. The size of the designed filter can be reduced to 30% of conventional three-dimensional filter circuits. The proposed resonators and the design techniques enable one to achieve both compact filter size and low-loss characteristics., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), 2011 -2013, Principal investigator, Competitive research funding, Grant-in-Aid for Young Scientists (B), Saitama University - 機能回路素子の装荷によるV・UHF帯アンテナの小型化に関する研究
大平 昌敬
財団法人移動無線センター近畿センター, 平成20年度モバイル・ワイヤレス研究助成（特別助成）, 2009/04 -2010/03, Principal investigator, Competitive research funding
Teaching Experience
- Electronics Laboratory II
Doshisha University - 高周波工学特論II
同志社大学 - マイクロ波工学
同志社大学 - Advanced Lectures in High Frequency Engineering I
Doshisha University - Introductory Seminar to Electrical and Electronic Engineering
Doshisha University - Electronics Laboratory I
Doshisha University - Electromagnetic Waves
Doshisha University - Electromagnetics I
Doshisha University - 電気電子システム実験I
埼玉大学 - Electrical Engineering, Electronics, and Applied Physics and Profession
Saitama University - Electrical Engineering, Electronics, and Applied Physics Laboratory I
Saitama University - 電気電子工学輪講
埼玉大学 - 電気電子システム実験III
埼玉大学 - 工学入門セミナー
埼玉大学 - 電磁波デバイス特論
埼玉大学 - 電磁波工学特論
埼玉大学 - 数値解析とアルゴリズム
埼玉大学 - 電磁気学I
埼玉大学 - 電気電子実験II
埼玉大学 - 電磁気学演習
埼玉大学