Masataka Ohira

J-GLOBAL         Last updated: Dec 6, 2018 at 11:13
 
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Name
Masataka Ohira
Affiliation
Saitama University
Section
Graduate School of Science and Engineering
Job title
Associate Professor
Degree
Dr. of Eng.(Doshisha University)

Research Areas

 
 

Academic & Professional Experience

 
Apr 2014
 - 
Today
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
 

Education

 
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

 
X. Wang, N. Shinoda, Z. Ma, and M. Ohira
AEU - International Journal of Electronics and Communications   98 259-264   Jan 2019   [Refereed]
A tunable transmission-line transformer (TLT) is newly introduced in this paper. It consists of two transmission lines (TLs), one parallel varactor and one series varactor. The design formulas are newly derived in closed-form, and its design proce...
X. Wang, T. Xie, G. Lu, Z. Ma, and M. Ohira
IEEE Microwave and Wireless Components Letters   28(12) 1158-1159   Dec 2018   [Refereed]
B. Ren, Z. Ma, H. Liu, X. Guan, X. Wang, P. Wen, and M. Ohira
IEEE Transactions on Microwave Theory and Techniques      Dec 2018   [Refereed]
In this paper, a fourth-order dual-band high-temperature superconducting (HTS) differential bandpass filter (BPF) with controllable midband frequencies and bandwidths is developed by using modified multimode square ring loaded resonators (SRLRs). ...
Design theory of dual-band Wilkinson power divider with different frequency ratio ranges
A. Song, X. Wang, Z. Ma, and M. Ohira
Proc. of 2018 Asia-Pacific Microwave Conf. (APMC 2018)      Nov 2018   [Refereed]
In this paper, the design theory of dual-band Wilkinson power divider (WPD) with different frequency ratio ranges is presented. By selecting different physical lengths ratio of two transmission lines (TLs), the frequency ratio range can be selecte...
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, and P. Wen
Proc. of 2018 Asia-Pacific Microwave Conf. (APMC 2018)      Nov 2018   [Refereed]
In this work, a fourth-order balanced dual-band superconducting bandpass filter (BPF) is developed by using the newly symmetric-stub-loaded resonator (SSLR). The proposed SSLR has the advantage of two controllable differential-mode (DM) and more f...

Misc

 
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
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
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   118(218) 55-59   Sep 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 ...

Patents

 
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