Yasushi ITO


L-Band SiGe HBT Frequency-Tunable Dual-Bandpass or Dual-Bandstop Differential Amplifiers Using Varactor-Loaded Series and Parallel LC Resonators
Kazuyoshi SAKAMOTO  Yasushi ITOH 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/12/01
Vol. E95-C  No. 12  pp. 1839-1845
Type of Manuscript: PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
amplifierdifferentialmicrowavefrequency-tunableSiGe HBTvaractorLC-resonatordual-band
  Summary |  Full Text:PDF (2.6MB)

An L-Band 4-Bit RL/RC-Switched Active Phase Shifter Using Differential Switches
Kenji NAKAMURA  Yasushi ITOH 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2009/09/01
Vol. E92-C  No. 9  pp. 1170-1175
Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Microwave and Millimeter-Wave Technologies and Their Applications)
Category: 
Keyword: 
phase shifterdifferentialmicrowaveswitchSiGe HBT
  Summary |  Full Text:PDF (951.3KB)

77-GHz MMIC Module Design Techniques for Automotive Radar Applications
Yasushi ITOH  Kazuhiko HONJO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/10/01
Vol. E88-C  No. 10  pp. 1939-1946
Type of Manuscript: REVIEW PAPER
Category: 
Keyword: 
millimeter-waveMMICmoduleautomotive radar sensorMCMSiPSoCflip-chip
  Summary |  Full Text:PDF (1.6MB)

Recent Advances in Measurement Techniques for Microwave Active Devices and Circuits
Yasushi ITOH  Kazuhiko HONJO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/05/01
Vol. E87-C  No. 5  pp. 657-664
Type of Manuscript: REVIEW PAPER
Category: 
Keyword: 
microwavesmeasurementactive devicecircuitvector network analysisload-pullprobingsamplingsensing
  Summary |  Full Text:PDF (1.8MB)

Highly Stable 6-18 GHz 2.3 dB Low-Noise Amplifier with Resistive-Loaded Series Feedback Circuits
Hidenori YUKAWA  Yukinobu TARUI  Koh KANAYA  Hiromitsu UCHIDA  Masatoshi NAKAYAMA  Yasushi ITOH 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/12/01
Vol. E86-C  No. 12  pp. 2445-2451
Type of Manuscript: Special Section PAPER (Special Issue on Recent Trends on Microwave and Millimeter Wave Application Technology)
Category: Amplifier
Keyword: 
microwaveamplifierwidebandlow-noiseGaAs
  Summary |  Full Text:PDF (1.2MB)

Fundamental Perspective of Future High Power Devices and Amplifiers for Wireless Communication Systems
Yasushi ITOH  Kazuhiko HONJO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/02/01
Vol. E86-C  No. 2  pp. 108-119
Type of Manuscript: INVITED PAPER (Special Issue on Circuit and Device Technology for High-Speed Wireless Communication)
Category: 
Keyword: 
microwavesamplifierdevicewireless communication system
  Summary |  Full Text:PDF (2MB)

A Compact Wideband T/R Switching Circuit Utilizing Quadrature Couplers and Gate-and-Drain-Driven HPAs
Hiromitsu UCHIDA  Masatoshi NII  Norio TAKEUCHI  Yoshihiro TSUKAHARA  Moriyasu MIYAZAKI  Yasushi ITOH 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/12/01
Vol. E85-C  No. 12  pp. 2022-2028
Type of Manuscript: Special Section PAPER (Special Issue on Low-Distortion,High-Power,High-Efficiency Active Device and Circuit Technology)
Category: 
Keyword: 
T/R switchingquadrature couplerFETbiasing conditionsmatching circuit
  Summary |  Full Text:PDF (1.5MB)

A 4-12 GHz 2 W GaAs HFET Amplifier Using Pre-Matching Circuits for Dual Gate-Bias Feed and Tapered Power Splitting/Combining FETs
Hidenori YUKAWA  Masatoshi NII  Yoshihiro TSUKAHARA  Yukio IKEDA  Yasushi ITOH 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/12/01
Vol. E85-C  No. 12  pp. 2029-2035
Type of Manuscript: Special Section PAPER (Special Issue on Low-Distortion,High-Power,High-Efficiency Active Device and Circuit Technology)
Category: 
Keyword: 
microwaveamplifierwidebandhigh powerGaAs
  Summary |  Full Text:PDF (911.5KB)

An Efficient Large-Signal Modeling Method Using Load-Line Analysis and Its Application to Non-linear Characterization of FET
Yukio IKEDA  Kazutomi MORI  Masatoshi NAKAYAMA  Yasushi ITOH  Osami ISHIDA  Tadashi TAKAGI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2001/07/01
Vol. E84-C  No. 7  pp. 875-880
Type of Manuscript: Special Section PAPER (Special Issue on Techniques for Constructing Microwave Simulators--Design and Analysis Tools for Electromagnetic Fields, Circuits, and Antennas--)
Category: Modeling of Nonlinear Microwave Circuits
Keyword: 
microwaveamplifierFETmodelingnonlinear analysis
  Summary |  Full Text:PDF (1.1MB)

Miniaturized Millimeter-Wave HMIC Amplifiers Using Capacitively-Coupled Matching Circuits and FETs with Resistive Source-Stubs
Hiromitsu UCHIDA  Hideshi HANJYO  Yasushi ITOH 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/11/20
Vol. E82-C  No. 11  pp. 2087-2093
Type of Manuscript: PAPER
Category: Microwave and Millimeter Wave Technology
Keyword: 
millimeter waveamplifierhybrid circuitcapacitive coupled-lineGaAs PHEMT
  Summary |  Full Text:PDF (1.1MB)

Very-Thin, Light-Weight Opto and Microwave Receiver Module for Satellite Communications
Kazuhiko NAKAHARA  Shinichi KANEKO  Yasushi ITOH 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/11/20
Vol. E82-C  No. 11  pp. 2050-2055
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 Assembly Technology
Keyword: 
amplifiermoduleactive phased array antennamicrowave
  Summary |  Full Text:PDF (1.1MB)

FOREWORD
Yasushi ITOH  Masaaki KUZUHARA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/05/20
Vol. E82-C  No. 5  pp. 677-678
Type of Manuscript: FOREWORD
Category: 
Keyword: 
  Summary |  Full Text:PDF (124.9KB)

A Calculation Method of Large-Signal Characteristics of Multi-Stage Power Amplifier Modules Using Source-Pull and Load-Pull Data
Kazutomi MORI  Yasushi ITOH  Katsuya KOMURO  Tadashi TAKAGI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/06/20
Vol. E81-C  No. 6  pp. 904-910
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter-Wave Module Technology)
Category: Semiconductor Devices and Amplifiers
Keyword: 
microwavesolid state power amplifiermulti-stage power amplifiercalculation method
  Summary |  Full Text:PDF (558.9KB)

Improvement of Adjacent Channel Leakage Power and Intermodulation Distortion by Using a GaAs FET Linearizer with a Large Source Inductance
Kazutomi MORI  Kazuhisa YAMAUCHI  Masatoshi NAKAYAMA  Yasushi ITOH  Tadashi TAKAGI  Hidetoshi KUREBAYASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1997/06/20
Vol. E80-C  No. 6  pp. 775-781
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeterwave High-power Devices)
Category: 
Keyword: 
microwaveamplifierlinearizerintermodulation distortionadjacent chamel leakage power
  Summary |  Full Text:PDF (477.2KB)

MMIC/Super-MIC/MIC-Combined C- to Ku-Band 2 W Balanced Amplifier Multi-Chip Module
Yasushi ITOH  Masatoshi NII  Norio TAKEUCHI  Yoshihiro TSUKAHARA  Hidetoshi KUREBAYASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1997/06/20
Vol. E80-C  No. 6  pp. 757-762
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeterwave High-power Devices)
Category: 
Keyword: 
MMICMICamplifierwidebandhigh power
  Summary |  Full Text:PDF (577KB)

Noise Reduction Device Using Novel Automatic Wavelength-Offset Control for Highly Stable Optical-Microwave Transmission Systems
Toshiyuki FUTAKATA  Yoshiaki TARUSAWA  Yasushi ITO  Toshio NOJIMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/05/20
Vol. E79-C  No. 5  pp. 657-663
Type of Manuscript: Special Section PAPER (Special Issue on Microwave Devices for Mobile Communications)
Category: Active Devices
Keyword: 
optical-microwave transmissionbeat noisemobile radio communication
  Summary |  Full Text:PDF (508.2KB)

Direct Efficiency and Power Calculation Method and Its Application to Low Voltage High Efficiency Power Amplifier
Kazutomi MORI  Masatoshi NAKAYAMA  Yasushi ITOH  Satoshi MURAKAMI  Yasuharu NAKAJIMA  Tadashi TAKAGI  Yasuo MITSUI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1995/09/20
Vol. E78-C  No. 9  pp. 1229-1236
Type of Manuscript: Special Section PAPER (Special Issue on Ultra-High-Speed Electron Devices)
Category: 
Keyword: 
calculation methodamplifierMMIChigh efficiencyhigh powerlow-voltage
  Summary |  Full Text:PDF (722.5KB)

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: 1995/09/20
Vol. E78-C  No. 9  pp. 1210-1215
Type of Manuscript: Special Section PAPER (Special Issue on Ultra-High-Speed Electron Devices)
Category: 
Keyword: 
amplifierlow noiseMMICmillimeter-waveHEMT
  Summary |  Full Text:PDF (865.2KB)

A Wideband Monolithic Lossy Match Power Amplifier Having an LPF/HPF-Combined Interstage Network
Mitsuru MOCHIZUKI  Yasushi ITOH  Masatoshi NII  Tadashi TAKAGI  Yasuo MITSUI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1995/09/20
Vol. E78-C  No. 9  pp. 1252-1254
Type of Manuscript: Special Section LETTER (Special Issue on Ultra-High-Speed Electron Devices)
Category: 
Keyword: 
amplifierpowerwidebandmonolithic
  Summary |  Full Text:PDF (237.9KB)

Analysis of High Power Amplifier Instability due to f0/2 Loop Oscillation
Tadashi TAKAGI  Mitsuru MOCHIZUKI  Yukinobu TARUI  Yasushi ITOH  Seiichi TSUJI  Yasuo MITSUI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1995/08/20
Vol. E78-C  No. 8  pp. 936-943
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter-Wave Technology)
Category: 
Keyword: 
amplifierhigh powerinstabilityloop oscillationanalysis
  Summary |  Full Text:PDF (543.1KB)

Wideband High Power Amplifier Design Using Novel Band-Pass Filters with FET's Parasitic Reactances
Yasushi ITOH  Tadashi TAKAGI  Hiroyuki MASUNO  Masaki KOHNO  Tsutomu HASHIMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1993/06/20
Vol. E76-C  No. 6  pp. 938-943
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter-Wave Technology for Advanced Functions and Size-Reductions)
Category: 
Keyword: 
amplifierwidebandhigh powerHEMTbandpass filter
  Summary |  Full Text:PDF (546.5KB)

GaAs HEMT Distributed Amplifiers
Yasushi ITO 
Publication:   IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/11/20
Vol. E70-E  No. 11  pp. 1046-1048
Type of Manuscript: Special Section LETTER (Special Issue: Papers from 1987 National Conference on Semicondutor Devices and Materials IEICE)
Category: Circuits and Systems
Keyword: 
  Summary |  Full Text:PDF (207.4KB)