Masataka OHIRA


A Fully Canonical Bandpass Filter Design Using Microstrip Transversal Resonator Array Configuration
Masataka OHIRA Toshiki KATO Zhewang MA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/10/01
Vol. E99-C  No. 10  pp. 1122-1129
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: 
Keyword: 
bandpass filterstransversal array filterseven modeodd modetransmission zeros
 Summary | Full Text:PDF(1.1MB)

A New Design Formula of Coupling Coefficient between Antenna and Resonator for Efficient Design of Filtering Antenna
Masataka OHIRA Kazuma YAMANAKA Zhewang MA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/07/01
Vol. E99-C  No. 7  pp. 744-750
Type of Manuscript:  Special Section PAPER (Special Section on Recent Advances in Simulation Techniques and Their Applications for Electronics)
Category: 
Keyword: 
filtering antennaradiation Q factorcoupling coefficientinput reflection response
 Summary | Full Text:PDF(920.9KB)

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 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/10/01
Vol. E97-C  No. 10  pp. 957-964
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-wave Technologies)
Category: 
Keyword: 
Bandpass filtersmultipath coupling topologytransmission zerosthree-mode resonators
 Summary | Full Text:PDF(1.1MB)

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 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/07/01
Vol. E95-C  No. 7  pp. 1203-1210
Type of Manuscript:  Special Section PAPER (Special Section on Recent Trends of Microwave Systems and Their Fundamental Technologies)
Category: 
Keyword: 
bandpass filtermicrostrip lineslotlinetransmission zerosthree-mode resonatorssource/load coupling
 Summary | Full Text:PDF(1.3MB)

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 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/10/01
Vol. E94-C  No. 10  pp. 1586-1593
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: Passive Devices and Circuits
Keyword: 
waveguide filtersfrequency-selective surfacesbandpass filterstransmission zeroscoaxial probe
 Summary | Full Text:PDF(1.3MB)

60-GHz-Band Switched-Beam Eight-Sector Antenna with SP8T Switch for 180 Azimuth Scan
Amane MIURA Masataka OHIRA Shoichi KITAZAWA Masazumi UEBA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/03/01
Vol. E93-B  No. 3  pp. 551-559
Type of Manuscript:  PAPER
Category: Devices/Circuits for Communications
Keyword: 
millimeter wavewireless LANswitched-beam antennamulti-sector antennasingle-pole eight-throw switch
 Summary | Full Text:PDF(2.5MB)

Multiple-Step Rectangular Horn with Two Orthogonal Sectoral Tapers for Elliptical Beam
Hirotsugu URATA Masataka OHIRA Hiroyuki DEGUCHI Mikio TSUJI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/02/01
Vol. E90-C  No. 2  pp. 217-223
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Electromagnetic Theory and Its Application)
Category: Aperture Antennas
Keyword: 
horn antennaselliptical beamoptimizationmode-matching methodMarquardt method
 Summary | Full Text:PDF(1.4MB)

Novel Dual-Resonant and Dual-Polarized Frequency Selective Surface Using Eight-Legged Element and Its Experimental Verification
Masataka OHIRA Hiroyuki DEGUCHI Mikio TSUJI Hiroshi SHIGESAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/12/01
Vol. E88-C  No. 12  pp. 2229-2235
Type of Manuscript:  Special Section PAPER (Special Section on Wireless Technologies and Computational Electromagnetics)
Category: EM Analysis
Keyword: 
frequency selective surfacemultibandbroadbandresonances
 Summary | Full Text:PDF(830.9KB)