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 Results 1 - 11 of 11  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
EMT, MW, OPE, MWP, EST, IEE-EMT [detail] 2015-07-17
13:25		 Hokkaido Kushiro City Lifelong Learning Center Dynamic AM/AM and AM/PM control of Doherty amplifier using tanh-shaped function
Yuji Komatsuzaki, Hiroshi Otsuka, Hifumi Noto, Shintaro Shinjo, Koji Yamanaka, Yoshihiro Hamamatsu, Hiroshi Fukumoto (Mitsubishi Electric Corp.) EMT2015-47 MW2015-85 OPE2015-59 EST2015-51 MWP2015-50		 Power amplifiers for communication systems require increasingly high efficiency at large back-off from saturated output ... [more] EMT2015-47 MW2015-85 OPE2015-59 EST2015-51 MWP2015-50
pp.227-232
SC 2014-03-14
14:35		 Tokyo National Institute of Informatics Online Failure Prediction with Accurate Failure Localization in Cloud Infrastructures
Hiroshi Otsuka (Fujitsu Labs), Kaustubh Joshi, Matti Hiltunen, Scott Daniels (AT&T Lab), Yasuhide Matsumoto (Fujitsu Labs) SC2013-20		 The ability to predict the occurrence of a failure in a large scale IT infrastructure, such as a cloud data center, open... [more] SC2013-20
pp.7-12
MW, ED 2013-01-18
11:15		 Tokyo Kikai-Shinko-Kaikan Bldg. The study of SSPS GaN amplifier for high-efficiency operation by gate length
Yutaro Yamaguchi, Toshiyuki Oishi, Hiroshi Otsuka, Takaaki Yoshioka, Hidetoshi Koyama, Fuminori Samejima, Yoshinori Tsuyama, Koji Yamanaka (Mitsubishi Electric Corp.) ED2012-121 MW2012-151		 In this paper, GaN HEMT high efficiency amplifier for Space Solar Power Stations/System (SSPS) is presented. 0.25μm gate... [more] ED2012-121 MW2012-151
pp.49-52
MW, ED 2013-01-18
14:30		 Tokyo Kikai-Shinko-Kaikan Bldg. Analysis of drain leakage current in AlGaN/GaN HEMT
Kazuo Hayashi, Toshiyuki Oishi, Yoshitaka Kamo, Yutaro Yamaguchi, Hiroshi Otsuka, Koji Yamanaka, Masatoshi Nakayama (Mitsubishi Electric Corp.), Yasuyuki Miyamoto (Tokyo Institute of Technology) ED2012-125 MW2012-155		 Traps in GaN layer of AlGaN/GaN HEMTs have been studied by using both experimental data and TCAD simulation. Two traps w... [more] ED2012-125 MW2012-155
pp.69-74
MW 2012-03-01
13:15		 Saga Saga University An X-band GaN High-Power Amplifier with a Parallel-Resonant 2nd-Harmonic Input Terminating Network
Hiromitsu Uchida, Hiroshi Otsuka, Koji Yamanaka, Hidetoshi Koyama, Masatoshi Nakayama, Yoshihito Hirano (Mitsubishi Electric Corp.) MW2011-174		  [more] MW2011-174
pp.35-40
MW 2011-10-20
09:00		 Tokyo The University of Electro-Communications X-Band 120W internally matched GaN amplifier in small package
Hiroaki Maehara, Hiromitsu Uchida, Hiromitsu Utsumi, Jun Nishihara, Hiroshi Otsuka, Koji Yamanaka, Masatoshi Nakayama (Melco) MW2011-85		 In this paper, a small package internally matched GaN HEMT high power amplifier operating at X-band is presented. Radar ... [more] MW2011-85
pp.1-5
OPE, EMT, MW 2009-07-30
13:00		 Hokkaido Asahikawa Civic Culture Hall High-power RF PD array module
Shigetaka Itakura, Tsutomu Nagatsuka, Hiroshi Otsuka, Kazutomi Mori, Kiyohide Sakai, Yoshihito Hirano (Mitsubishi Electric corp.) MW2009-34 OPE2009-34		 We developed a high-power RF photodiode module that consisted of a beam splitter dividing a light from a fiber into four... [more] MW2009-34 OPE2009-34
pp.25-30
MW 2008-06-27
14:50		 Aichi Toyohashi Univ. of Tech. Efficiency Enhancement of GaN HEMTs with Harmonic Tuning Technique
Koji Yamanaka, Hifumi Noto, Makoto Kimura, Kazuhisa Yamauchi, Yoshitaka Kamo, Eigo Kuwata, Hiroshi Otsuka, Akira Inoue (Mitsubishi Electric) MW2008-44		 In this paper, high efficiency operation of GaN HEMTs with harmonic tuning is presented. As power density of GaN HEMTs i... [more] MW2008-44
pp.69-74
SCE, MW 2008-04-22
14:50		 Tokyo Kikai-Shinko-Kaikan Bldg. GaN HEMT broadband high efficiency amplifier
Koji Yamanaka, Hiroshi Otsuka, Yoshinori Tsuyama, Shin Chaki, Akira Inoue (Mitsubishi Electric Corp.) SCE2008-10 MW2008-10		 In this paper, circuit technologies for GaN HEMT broadband high efficiency amplifiers are presented. Cat-CVD technique e... [more] SCE2008-10 MW2008-10
pp.53-58
ED, MW 2008-01-16
14:50		 Tokyo Kikai-Shinko-Kaikan Bldg. C-band High Efficiency GaN HEMT Power Amplifiers
Koji Yamanaka, Hiroshi Otsuka, Kazutomi Mori, Hifumi Noto (Mitsubishi Elec. Corp.) ED2007-210 MW2007-141		 In this paper, GaN HEMT high power amplifiers operating at C-band are presented. Cat-CVD technique and cell division con... [more] ED2007-210 MW2007-141
pp.23-28
MW 2006-11-22
10:10		 Fukuoka   A Ka-Band 6W MMIC Power Amplifier
Hiroshi Otsuka, Kazuhisa Yamauchi, Shin Chaki, Kazuhiko Nakahara, Kunihiro Endo, Masatoshi Nakayama (Mitsubishi) 		 [more] MW2006-140
pp.51-54
 Results 1 - 11 of 11  /   
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