Yasuhiro KAZAMA


A Circular Aperture Array Configuration with a Small Antenna Radius
Takanori NORO Yasuhiro KAZAMA Masaharu TAKAHASHI Koichi ITO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/09/01
Vol. E90-B  No. 9  pp. 2271-2279
Type of Manuscript:  Special Section PAPER (Special Section on 2006 International Symposium on Antennas and Propagation)
Category: Antennas
Keyword: 
array configurationuniform arrangementpatch antennas helical antennas
 Summary | Full Text:PDF(1.6MB)

Reflection Characteristics of Center-Feed Single-Layer Waveguide Arrays
Yasuhiro TSUNEMITSU SeHyun PARK Jiro HIROKAWA Makoto ANDO Yohei MIURA Yasuhiro KAZAMA Naohisa GOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/06/01
Vol. E88-B  No. 6  pp. 2313-2319
Type of Manuscript:  Special Section PAPER (Special Section on 2004 International Symposium on Antennas and Propagation)
Category: 
Keyword: 
alternating phase fed arraycenter-feedsingle-layer waveguidereflection
 Summary | Full Text:PDF(1.7MB)

Phase Correction Method for GO Designed Dielectric Lens Horn Antenna
Atsushi KEZUKA Yoshihide YAMADA Yasuhiro KAZAMA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/06/01
Vol. E88-B  No. 6  pp. 2334-2340
Type of Manuscript:  Special Section PAPER (Special Section on 2004 International Symposium on Antennas and Propagation)
Category: 
Keyword: 
TM01modelens horn antennaomni directional coveragegeometrical opticsFDTDray tracingmatching layer
 Summary | Full Text:PDF(998.4KB)

Quadrifilar Helical Antennas with Parasitic Loops
Yasuhiro KAZAMA Shinobu TOKUMARU 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/11/25
Vol. E81-B  No. 11  pp. 2212-2218
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
backfire quadrifilar helical antennacurrent distributionparasitic loopwire-grid modelsatellite communication
 Summary | Full Text:PDF(510.3KB)

Application of a Parasitic Loop on Loosely Wound Short-Arm Spiral Antennas
Yasuhiro KAZAMA Nagayoshi MORITA Shinobu TOKUMARU 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/11/25
Vol. E81-B  No. 11  pp. 2205-2211
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
loosely wound short-arm two-wire archimedean spiral antennaaxial ratiopower gaincurrent distribution
 Summary | Full Text:PDF(559.8KB)