Yasutake HIRACHI


A 60GHz-Band High-Efficiency Antenna with a Thick Resin Layer and Differentially Fed through a Hole in a Silicon Chip
Naoya OIKAWA Jiro HIROKAWA Hiroshi NAKANO Yasutake HIRACHI Hiroshi ISONO Atsushi ISHII Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/01/01
Vol. E99-B  No. 1  pp. 27-32
Type of Manuscript:  Special Section PAPER (Special Section on Recent Progress in Antennas, Propagation and Wireless Systems Related to Topics in ISAP2014)
Category: Antennas and Propagation
Keyword: 
differential-feed antennapatch antennaon-chip antennaradiation efficiencyreverberation chamber
 Summary | Full Text:PDF(2.3MB)

Manufacture and Performance of a 60GHz-Band High-Efficiency Antenna with a Thick Resin Layer and the Feed through a Hole in a Silicon Chip
Jun ASANO Jiro HIROKAWA Hiroshi NAKANO Yasutake HIRACHI Hiroshi ISONO Atsushi ISHII Makoto ANDO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/12/01
Vol. E96-B  No. 12  pp. 3108-3115
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
on-chip antennaconnecting lossradiation efficiencyreverberation chamber
 Summary | Full Text:PDF(2.5MB)

A Cost-Effective Transition between a Microstrip Line and a Post-Wall Waveguide Using a Laminated LTCC Substrate in 60-GHz Band
Takafumi KAI Jiro HIROKAWA Makoto ANDO Hiroshi NAKANO Yasutake HIRACHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/04/01
Vol. E90-C  No. 4  pp. 907-910
Type of Manuscript:  LETTER
Category: Microwaves, Millimeter-Waves
Keyword: 
coaxialpost-wall waveguidemicrostrip linemillimeter-wave bandLTCC
 Summary | Full Text:PDF(914.1KB)

A Coaxial Line to Post-Wall Waveguide Transition for a Cost-Effective Transformer between a RF-Device and a Planar Slot-Array Antenna in 60-GHz Band
Takafumi KAI Yusuke KATOU Jiro HIROKAWA Makoto ANDO Hiroshi NAKANO Yasutake HIRACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/05/01
Vol. E89-B  No. 5  pp. 1646-1653
Type of Manuscript:  PAPER
Category: Antennas and Propagation
Keyword: 
home-link systemcoaxialpost-wall waveguidemillimeter-wave bandPTFE
 Summary | Full Text:PDF(1MB)

Design and Performance of a Millimeter-Wave Video-Transmission System Using 60-GHz Band for Indoor BS Signals Transmission
Kiyoshi HAMAGUCHI Yozo SHOJI Hiroyo OGAWA Yasutake HIRACHI Seiji NISHI Eiichiro KAWAKAMI Eiji SUEMATSU Toshiya IWASAKI Akira AKEYAMA Youichi SHIMOMICHI Takao KIZAWA Ichiro KUWANA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/10/01
Vol. E84-C  No. 10  pp. 1479-1490
Type of Manuscript:  Special Section PAPER (Special Issue on Millimeter-Wave Circuits and Fabrication Technologies Opening up the 21st Century)
Category: 
Keyword: 
millimeter waveBSintermodulationCNRexperiment
 Summary | Full Text:PDF(1.5MB)

High-Frequency and High-Speed Devices for Communication Network Systems
Yasutake HIRACHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/11/25
Vol. E82-C  No. 11  pp. 1862-1870
Type of Manuscript:  INVITED PAPER (Special Issue on High-Frequency/High-Speed Devices for Information and Communication Systems in the 21st Century)
Category: Information and Communication System
Keyword: 
high speed networkmillimeter-wave devicehigh speed device
 Summary | Full Text:PDF(2.5MB)