Akira OHTA


A Low Quiescent Current CV/CC Parallel Operation HBT Power Amplifier for W-CDMA Terminals
Shintaro SHINJO Kazutomi MORI Hiro-omi UEDA Akira OHTA Hiroaki SEKI Noriharu SUEMATSU Tadashi TAKAGI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/08/01
Vol. E86-C  No. 8  pp. 1444-1450
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: 
Keyword: 
microwavepower amplifierheterojunction bipolar transistor (HBT)inductor base feedresistor base feed
 Summary | Full Text:PDF

An L-Band High Efficiency and Low Distortion Multi-Stage Amplifier Using Self Phase Distortion Compensation Technique
Yukio IKEDA Kazutomi MORI Shintaro SHINJO Fumimasa KITABAYASHI Akira OHTA Tadashi TAKAGI Osami ISHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/12/01
Vol. E85-C  No. 12  pp. 1967-1972
Type of Manuscript:  Special Section PAPER (Special Issue on Low-Distortion,High-Power,High-Efficiency Active Device and Circuit Technology)
Category: 
Keyword: 
microwaveamplifiertransistorPHEMTdistortionefficiency
 Summary | Full Text:PDF

Electromigration and Diffusion of Gold in GaAs IC Interconnections
Akira OHTA Kotaro YAJIMA Norio HIGASHISAKA Tetsuya HEIMA Takayuki HISAKA Ryo HATTORI Yoshikazu NAKAYAMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/11/01
Vol. E85-C  No. 11  pp. 1932-1939
Type of Manuscript:  PAPER
Category: Semiconductor Materials and Devices
Keyword: 
electromigrationdiffusionGaAs IChigh temperaturehigh current density
 Summary | Full Text:PDF

High-Efficiency 0.1 cc Power Amplifier Module for 900 MHz Personal Digital Cellular Telephones
Akira INOUE Akira OHTA Takahiro NAKAMOTO Shigeki KAGEYAMA Toshiaki KITANO Hideaki KATAYAMA Toshikazu OGATA Noriyuki TANINO Kazunao SATO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/11/25
Vol. E82-C  No. 11  pp. 1906-1912
Type of Manuscript:  Special Section PAPER (Special Issue on High-Frequency/High-Speed Devices for Information and Communication Systems in the 21st Century)
Category: RF Power Devices
Keyword: 
microwave power amplifiermicrowave power transistorpower efficiency
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GaAs 10 Gb/s 64:1 Multiplexer/Demultiplexer Chip Sets
Masaaki SHIMADA Norio HIGASHISAKA Akira OHTA Kenji HOSOGI Kazuo KUBO Noriyuki TANINO Tadashi TAKAGI Fuminobu HIDANI Osamu ISHIHARA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/04/25
Vol. E79-C  No. 4  pp. 503-511
Type of Manuscript:  Special Section PAPER (Special Issue on Ultra-High-Speed LSIs)
Category: 
Keyword: 
multiplexerdemultiplexerGaAs10 Gb/sSCFLDCFL
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Low Power Dissipation GaAs DCFL 2.5 Gbps 16-bit Multiplexer/Demultiplexer LSIs
Norio HIGASHISAKA Masaaki SHIMADA Akira OHTA Kenji HOSOGI Kazuo KUBO Noriyuki TANINO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1995/09/25
Vol. E78-C  No. 9  pp. 1195-1202
Type of Manuscript:  Special Section PAPER (Special Issue on Ultra-High-Speed Electron Devices)
Category: 
Keyword: 
MUXDEMUXGaAs2.5 Gbpspower
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