Shoichi KITAZAWA


A Theoretical Analysis of a Circular Microstrip Antenna in a Parallel-Plate Waveguide
Narihiro NAKAMOTO Tomohiro OKA Shoichi KITAZAWA Hiroshi BAN Kiyoshi KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/01/01
Vol. E96-B  No. 1  pp. 173-181
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
circular microstrip antennaparallel-plate waveguideinput impedanceresonant frequencysurface admittance
 Summary | Full Text:PDF(1.8MB)

Switchable Multi-Frequency MMIC Oscillator for the 60 GHz Millimeter Wave Band
Eddy TAILLEFER Shoichi KITAZAWA Masazumi UEBA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/04/01
Vol. E93-C  No. 4  pp. 497-504
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
proof-of-conceptoscillatorMMICswitched-capacitormillimeter wave bandGaAs p-HEMT
 Summary | Full Text:PDF(556.9KB)

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)

A Dual-Band Comb-Line Filter Using a Half-Wavelength Stripline Nesting a Quarter-Wavelength Coplanar Waveguide Resonator
Shoichi KITAZAWA Masahiro GESHIRO Kenta ISHIMARU Masaharu OHASHI Hideaki FUJIMOTO Kouji WADA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/09/01
Vol. E90-B  No. 9  pp. 2439-2446
Type of Manuscript:  Special Section PAPER (Special Section on 2006 International Symposium on Antennas and Propagation)
Category: Electromagnetics
Keyword: 
dual bandband pass filterresonator
 Summary | Full Text:PDF(941.8KB)

A Multilayer Single-Input/Single-Output Dual-Band Filter Fabricated in a High Permittivity LTCC Substrate
Shoichi KITAZAWA Hideyuki MIYAKE Masahiro GESHIRO Masaharu OHASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/04/01
Vol. E89-C  No. 4  pp. 509-516
Type of Manuscript:  Special Section PAPER (Special Section on Advanced RF Technologies for Compact Wireless Equipment and Mobile Phones)
Category: 
Keyword: 
dual bandband pass filtermatchingLTCC
 Summary | Full Text:PDF(803KB)

A Study of a Laminated Band Elimination Filter Comprising Coupled-Line Resonators Using Low Temperature Co-Fired Ceramics
Hideyuki MIYAKE Shoichi KITAZAWA Toshio ISHIZAKI Koichi OGAWA Ikuo AWAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/07/25
Vol. E82-C  No. 7  pp. 1104-1109
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: Passive Devices and Circuits
Keyword: 
band elimination filtercoupled-line resonatorslaminated filterLTCC
 Summary | Full Text:PDF(1.3MB)