Takayuki KATO

A Proposal for Adopting the Frequency Response of an Envelope Amplifier with Memoryless DPD EER PA Model
Takayuki KATO Yoshinori KOGAMI Yuuki FUNAHASHI Atsushi YAMAOKA Keiichi YAMAGUCHI Yasuhiko TANABE Jiafeng ZHOU Kevin MORRIS Gavin T. WATKINS 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/07/01
Vol. E95-C  No. 7  pp. 1163-1171
Type of Manuscript:  Special Section PAPER (Special Section on Recent Trends of Microwave Systems and Their Fundamental Technologies)
Category: 
Keyword: 
EER, power amplifier, memoryless DPD, envelope amplifier, frequency response, 
 Summary | Full Text:PDF
An HPSK/OFDM 64-QAM Dual-Mode Doherty Power Amplifier Module for Mobile Terminals
Takayuki KATO Keiichi YAMAGUCHI Yasuhiko KURIYAMA Hiroshi YOSHIDA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/09/01
Vol. E90-C  No. 9  pp. 1678-1684
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technology)
Category: Active Devices/Circuits
Keyword: 
Doherty amplifier, PA module, HPSK, OFDM 64-QAM, multi-mode, mobile terminal, GaAs MMIC, 
 Summary | Full Text:PDF
A 4-mm-Square Miniaturized Doherty Power Amplifier Module for W-CDMA Mobile Terminals
Takayuki KATO Keiichi YAMAGUCHI Yasuhiko KURIYAMA Hiroshi YOSHIDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/02/01
Vol. E90-A  No. 2  pp. 310-316
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
Doherty amplifier, PA module, W-CDMA, mobile terminal, GaAs MMIC, 
 Summary | Full Text:PDF
Analyses on Monolithic InP HEMT Resistive Mixer Operating under Very Low LO Power
Takuo KASHIWA Kazuya YAMAMOTO Takayuki KATOH Takao ISHIDA Takahide ISHIKAWA Yasuo MITSUI Yoshikazu NAKAYAMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/10/25
Vol. E82-C  No. 10  pp. 1831-1838
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
resistive mixer, LO power, conversion loss, InP HEMT, conductance, 
 Summary | Full Text:PDF
Automated Millimeter-Wave On-Wafer Testing System
Takayuki KATOH Takuo KASHIWA Hiroyuki HOSHI Akira INOUE Takahide ISHIKAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/07/25
Vol. E82-C  No. 7  pp. 1312-1317
Type of Manuscript:  Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: Measurements
Keyword: 
millimeter wave, S-parameter, noise figure, MMIC, on-wafer measurement, 
 Summary | Full Text:PDF
A Q-Band High Gain, Low Noise Variable Gain Amplifier Using Dual Gate AlGaAs/InGaAs Pseudomorphic HEMTs
Takuo KASHIWA Takayuki KATOH Naohito YOSHIDA Hiroyuki MINAMI Toshiaki KITANO Makio KOMARU Noriyuki TANINO Tadashi TAKAGI Osamu ISHIHARA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/04/25
Vol. E79-C  No. 4  pp. 573-579
Type of Manuscript:  PAPER
Category: Semiconductor Materials and Devices
Keyword: 
millimeter-wave, low noise figure, MMIC, dual gate, gain control, 
 Summary | Full Text:PDF
A Super Low Noise AlInAs/InGaAs HEMT Fabricated by Selective Gate Recess Etching
Naohito YOSHIDA Toshiaki KITANO Yoshitsugu YAMAMOTO Takayuki KATOH Hiroyuki MINAMI Takuo KASHIWA Takuji SONODA Hirozo TAKANO Osamu ISHIHARA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1995/09/25
Vol. E78-C  No. 9  pp. 1279-1285
Type of Manuscript:  PAPER
Category: Semiconductor Materials and Devices
Keyword: 
HEMT, AlInAs/InGaAs, InP, low-noise, selectiverecess, 
 Summary | Full Text:PDF
Millimeter-Wave Monolithic AlGaAs/InGaAs/GaAs Pseudomorphic HEMT Low Noise Amplifier Modules for Advanced Microwave Scanning Radiometer
Kazuhiko NAKAHARA Yasushi ITOH Yoshie HORIIE Takeshi SAKURA Naohito YOSHIDA Takayuki KATOH Tadashi TAKAGI Yasuo MITSUI Yasuyuki ITO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1995/09/25
Vol. E78-C  No. 9  pp. 1210-1215
Type of Manuscript:  Special Section PAPER (Special Issue on Ultra-High-Speed Electron Devices)
Category: 
Keyword: 
amplifier, low noise, MMIC, millimeter-wave, HEMT, 
 Summary | Full Text:PDF
An Ultra Low Noise 50-GHz-Band Amplifier MMIC Using an AIGaAs/InGaAs Pseudomorphic HEMT
Takuo KASHIWA Takayuki KATOH Naohito YOSHIDA Hiroyuki MINAMI Toshiaki KITANO Makio KOMARU Noriyuki TANINO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1995/03/25
Vol. E78-C  No. 3  pp. 318-321
Type of Manuscript:  LETTER
Category: Electromagnetic Theory
Keyword: 
millimeter-wave, low noise figure, MMIC, AlGaAs/InGaAs Pseudomorphic HEMT, modeling, 
 Summary | Full Text:PDF