Masataka Ohira

J-GLOBAL         Last updated: Jul 14, 2018 at 20:38
Masataka Ohira
Saitama University
Graduate School of Science and Engineering
Job title
Associate Professor
Dr. of Eng.(Doshisha University)

Research Areas


Academic & Professional Experience

Apr 2014
Associate Professor, Saitama University
Jul 2011
Mar 2013
Visiting Researcher, ATR
Jun 2010
Mar 2011
Visiting Researcher, ATR Wave Engineering Laboratories
Apr 2010
Mar 2014
Assistant Professor, Saitama University
Apr 2006
Mar 2010
Researcher, ATR Wave Engineering Laboratories


Apr 2003
Mar 2006
Graduate School of Engineering, Dr., Doshisha University
Apr 2001
Mar 2003
Graduate School of Engineering, Doshisha University
Apr 1997
Mar 2001
Department of Electronics, Faculty of Engineering, Doshisha University

Awards & Honors

Jun 2018
Best Paper Award, IEICE
Winner: R. Hamano, Z. Ma, and M. Ohira
Dec 2014
IEEE MTT-S Japan Young Engineer Award
Dec 2014
Michiyuki Uenohara Memorial Award
Dec 2012
IEEE AP-S Japan Chapter Young Engineer Award
Apr 2011
Microwave Prize, CJMW2011 (China-Japan Microwave Conference)

Published Papers

A. Yamashita, Z. Ma, and M. Ohira
IEICE Trans. Electron. (Japanese Ed.)   J101-C(6) 327-335   Aug 2018   [Refereed][Invited]
Design of microstrip wideband filtering antenna using network synthesis theory of wideband chebyshev filter
M. Ohira, K. Sato, and Z. Ma
Proc. of 2018 Thailand-Japan MicroWave (TJMW2018)      Jun 2018
In this paper, a new Nth-order wideband microstrip filtering antenna (filtenna) structure is proposed, which can be designed with a network synthesis theory of wideband Chebyshev bandpass filters. The filtenna simply consists of (N-1) shorted-end ...
A novel microstrip symmetric diagonal cross-coupling quadruplet bandpass filter using even/odd-mode stepped impedance resonators
R. Mikase, M. Ohira, Z. Ma, and X. Wang
Digest of 2018 IEEE MTT-S International Microwave Symposium   712-715   Jun 2018   [Refereed]
In this paper, a novel symmetric quadruplet coupling scheme for two symmetric/asymmetric transmission zeros (TZs) is introduced, and its new symmetric microstrip filter is proposed for a bandpass filter (BPF) design having high skirt selectivity a...
A new microstrip bandstop filter for fully canonical Cul-de-Sac coupling configuration
M. Ohira, M. Kanomata, Z. Ma, and X. Wang
Digest of 2018 IEEE MTT-S International Microwave Symposium   708-711   Jun 2018   [Refereed]
A new microstrip fully canonical Nth-order Cul-de-Sac coupling bandstop filter (BSF) is proposed in this paper. A Cul-de-Sac coupling matrix based BSF design allows to provide an equiripple stopband response with reflection zeros at passbands, kee...
B. Ren, H. Liu, Z. Ma, M. Ohira, P. Wen, X. Wang, X. Guan
IEEE Access   (6) 21850-21858   Apr 2018   [Refereed]
In this paper, a new quadruple-mode stepped-impedance square ring loaded resonator (SI-SRLR) is proposed, and a high-performance dual-band differential bandpass filter (BPF) is developed. Resonant characteristics of the SI-SRLR are investigated by...


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   117(34) 55-60   May 2017
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   117(215) 31-36   Sep 2017
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   117(366) 47-52   Dec 2017
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   117(412) 41-46   Jan 2018
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   118(18) 13-18   Apr 2018

Conference Activities & Talks

Microwave planar bandpass filter design for student design competition
M. Ohira
Tutorial Session of 2016 Thailand-Japan MicroWave (TJMW2016)   11 Jun 2016   
Masataka Ohira
Microwave Workshops & Exhibition (MWE 2015)   25 Nov 2015   
Masataka Ohira
2014 Asia-Pacific Microwave Conference (APMC 2014)   4 Nov 2014   IEICE
Fundamentals of Microwave Filters: Synthesis Theory and Design Techniques [Invited]
H. Kayano and M. Ohira
TJMW 2013 Tutorial Session   2 Dec 2013   
M. Ohira, H. Aoyama, and Z. Ma
Microwave Workshops & Exhibition (MWE2013)   29 Nov 2013   
This paper describes a circuit synthesis theory, a parameter-extraction method of transversal resonator array filters, and their applications to multi-mode filter designs. The equivalent circuit is expressed with parallel connection of resonators ...


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 surveillan...
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 configure...
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
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
大平 昌敬, 馬場 隆行, 北沢 祥一, 伴 弘司, 上羽 正純