Yasushi ITOH


PCB-Based Cross-Coupled Differential VCOs Using a Novel LC-Tank Comprised of the Chip Inductors
Hikaru IKEDA Yasushi ITOH 
Publication:   
Publication Date: 2018/10/01
Vol. E101-C  No. 10  pp. 744-750
Type of Manuscript:  Special Section PAPER (Special Section on Microwave and Millimeter-Wave Technologies)
Category: 
Keyword: 
microwavedifferentialcross-coupledVCOLC-tankSiGe HBT
 Summary | Full Text:PDF(1.7MB)

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(952.9KB)

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(908.7KB)

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: 1999/11/25
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: 1999/11/25
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: 1999/05/25
Vol. E82-C  No. 5  pp. 677-678
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(123.8KB)

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: 1998/06/25
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(557.3KB)

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: 1997/06/25
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(475.8KB)

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: 1997/06/25
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(575.7KB)

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: 
amplifierlow noiseMMICmillimeter-waveHEMT
 Summary | Full Text:PDF(863.9KB)

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: 1995/09/25
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(236.9KB)

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: 1995/09/25
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(721KB)

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: 1995/08/25
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(541.6KB)

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: 1993/06/25
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(545.2KB)