Yasutake HIRACHI

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: 
coaxial,  post-wall waveguide,  microstrip line,  millimeter-wave band,  LTCC, 
  Summary |  Full Text:PDF (914.7KB)
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 system,  coaxial,  post-wall waveguide,  millimeter-wave band,  PTFE, 
  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 wave,  BS,  intermodulation,  CNR,  experiment, 
  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: 1999/11/20
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 network,  millimeter-wave device,  high speed device, 
  Summary |  Full Text:PDF (2.5MB)