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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 10 of 10  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
SANE 2011-05-20
15:00		 Kanagawa National Defense Academy of Japan Research on Realization of A High Power L-Band GaN Module
Hisanori Irie, Hirotaka Hayashi, Takayuki Shimizu, Reiji Satou (TRDI), Takao Fujii (FSI), Akihiko Akasegawa, Hisao Shigematsu, Shouji Amatatsu, Masao Moriwaki (Fujitsu) SANE2011-13		  [more] SANE2011-13
pp.19-23
MW 2009-09-25
15:15		 Tokyo Univ. of Electro-Communications C-band 340-W and X-band 100-W GaN Power Amplifiers with Over 50-% PAE
Hisao Shigematsu, Yusuke Inoue, Akihiko Akasegawa, Satoshi Masuda, Masao Yamada, Masahito Kanamura, Toshihiro Ohki, Kozo Makiyama, Naoya Okamoto, Kenji Imanishi, Toshihide Kikkawa, Kazukiyo Joshin, Naoki Hara (Fujitsu Lab.) MW2009-86		 In this paper, we report an X-band power amplifier with over 100-W output power using 0.25-μm GaN-HEMTs and a C-band pow... [more] MW2009-86
pp.73-78
MW 2008-12-12
15:15		 Toyama Toyama-Univ. Gofuku-camp. A Novel Filter Construction Utilizing HTS Reaction-Type Filter to Improve Adjacent Channel Leakage Power Ratio of GaN HEMT Power Amplifiers
Shunichi Futatsumori, Takashi Hikage, Toshio Nojima (Hokkaido Univ.), Akihiko Akasegawa, Teru Nakanishi, Kazunori Yamanaka (Fujitsu Ltd.) MW2008-158		 We propose a new band selective stop filter construction to decrease the out of band intermodulation distortion (IMD) no... [more] MW2008-158
pp.71-76
SCE, MW 2008-04-22
11:30		 Tokyo Kikai-Shinko-Kaikan Bldg. Power Handling Characteristics of a HTS Dual-mode Ring Resonator Filter
Masatoshi Ishii, Akihiko Akasegawa, Teru Nakanishi, Kazunori Yamanaka (Fujitsu Ltd.) SCE2008-8 MW2008-8		 For mobile communication systems, a transmitting band pass filter with high cutoff performance will be required. A ring ... [more] SCE2008-8 MW2008-8
pp.43-46
SCE, MW 2008-04-22
16:05		 Tokyo Kikai-Shinko-Kaikan Bldg. [Invited Talk] Spurious Suppression Effect by HTS power bandpass filters for 5 GHz band
Kazunori Yamanaka, Kazuaki Kurihara, Akihiko Akasegawa (Fujitsu Ltd.), Shunichi Futatsumori, Takashi Hikage, Toshio Nojima (Hokkaido Univ.) SCE2008-13 MW2008-13		 For high temperature superconducting (HTS) power bandpass filters (BPFs), the developed resonator devices, the technolog... [more] SCE2008-13 MW2008-13
pp.69-74
RCS, AN, MoNA, SR, WBS
(Joint)		 2008-03-06
16:50		 Kanagawa YRP [Special Talk] R&D of superconducting tunable power filters with patch microstrips in low microwave band
Kazunori Yamanaka, Keisuke Sato, Akihiko Akasegawa, Teru Nakanishi, Kazuaki Kurihara (Fujitsu Ltd.) SR2007-97		 Applications of superconducting filters with high power handling and tunable frequency filtering for wireless transmitte... [more] SR2007-97
pp.83-89
MW, SCE 2007-04-27
11:15		 Tokyo Kikai-Shinko-Kaikan Bldg. Wide dynamic range nonlinear distortion measurement of High-Temperature Superconducting microwave devices
Masato Furuno, Shunichi Futatsumori, Hiroshi Matsubara, Takashi Hikage, Toshio Nojima (Hokkaido Univ.), Akihiko Akasegawa, Teru Nakanishi, Kazunori Yamanaka (Fujitsu Ltd.) SCE2007-6 MW2007-6		 Measurement and analytical methods for nonlinear characteristics of HTS microwave devices are investigated. Firstly, com... [more] SCE2007-6 MW2007-6
pp.27-30
MW, SCE 2007-04-27
14:30		 Tokyo Kikai-Shinko-Kaikan Bldg. Examination of a Superconducting Disk Resonator with a Ground-slot for a dual-mode
Akihiko Akasegawa, Teru Nakanishi, Kazunori Yamanaka, Masatoshi Ishii (Fujitsu) SCE2007-8 MW2007-8		 This reports a feasibility of a novel perturbation by ground-slot for superconducting filters with the both high-power h... [more] SCE2007-8 MW2007-8
pp.37-41
MW, SCE 2007-04-27
14:55		 Tokyo Kikai-Shinko-Kaikan Bldg. Design and fabrication of tunable transmit filter at 5 GHz
Atsushi Saito, Shinji Takeuchi, Maya Osaka, Satoshi Ono, Masayoshi Kimura, Haruki Kinouchi (Yamagata Univ.), Akihiko Akasegawa, Kazunori Yamanaka, Kazuaki Kurihara (Fujitsu Corp.), Satoru Hirano, Shigetoshi Ohshima (Yamagata Univ.) SCE2007-9 MW2007-9		 Sliced microstrip line resonator (MSLR) filters at 5 GHz were designed and fabricated for use as tunable high-power tran... [more] SCE2007-9 MW2007-9
pp.43-48
MW, SCE 2007-04-27
15:20		 Tokyo Kikai-Shinko-Kaikan Bldg. A 5 GHz High-Temperature Superconducting reaction-type transmitting filter to suppress adjacent channel noises
Shunichi Futatsumori, Takashi Hikage, Toshio Nojima (Hokkaido Univ.), Akihiko Akasegawa, Teru Nakanishi, Kazunori Yamanaka (Fujitsu Ltd.) SCE2007-10 MW2007-10		 A 5 GHz High-Temperature Superconducting reaction-type transmitting filter (HTS-RTF) to suppress adjacent channel noise ... [more] SCE2007-10 MW2007-10
pp.49-54
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