Kazuya YAMAMOTO


3.5-GHz-Band Low-Bias-Current Operation 0/20-dB Step Linearized Attenuators Using GaAs-HBT Compatible, AC-Coupled, Stack Type Base-Collector Diode Switch Topology
Kazuya YAMAMOTO  Miyo MIYASHITA  Nobuyuki OGAWA  Takeshi MIURA  Teruyuki SHIMURA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/07/01
Vol. E90-C  No. 7  pp. 1515-1523
Type of Manuscript: PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
wireless LANattenuatordiodesheterojunction bipolar transistors (HBTs)linearityintermodulation distortionlinearizationmonolithic microwave integrated circuit (MMIC)
  Summary |  Full Text:PDF (1.1MB)

A GSM/EDGE Dual-Mode, Triple-Band InGaP HBT MMIC Power Amplifier Module
Teruyuki SHIMURA  Tomoyuki ASADA  Satoshi SUZUKI  Takeshi MIURA  Jun OTSUJI  Ryo HATTORI  Yukio MIYAZAKI  Kazuya YAMAMOTO  Akira INOUE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/07/01
Vol. E88-C  No. 7  pp. 1495-1501
Type of Manuscript: PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
GSM/EDGE dual modepower amplifier moduleInGaP HBTdiode switchRx-noise
  Summary |  Full Text:PDF (1.2MB)

Direct Measurement of the Maximum Operating Region in AlGaAs HBTs for RF Power Amplifiers
Akira INOUE  Shigenori NAKATSUKA  Satoshi SUZUKI  Kazuya YAMAMOTO  Teruyuki SHIMURA  Ryo HATTORI  Yasuo MITSUI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/08/01
Vol. E86-C  No. 8  pp. 1451-1457
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology)
Category: 
Keyword: 
maximum operating regionmeasurementwaveformpower amplifierHBT
  Summary |  Full Text:PDF (731.2KB)

Design and Experimental Results of CMOS Low-Noise/Driver MMIC Amplifiers for Use in 2.4-GHz and 5.2-GHz Wireless Communications
Kazuya YAMAMOTO  Tetsuya HEIMA  Akihiko FURUKAWA  Masayoshi ONO  Yasushi HASHIZUME  Hiroshi KOMURASAKI  Hisayasu SATO  Naoyuki KATO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/02/01
Vol. E85-C  No. 2  pp. 400-407
Type of Manuscript: PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
Si-bulk CMOSMMIC2.4 GHz5.2-GHzlow-noise/driver amplifier
  Summary |  Full Text:PDF (376KB)

2.4-GHz-Band CMOS RF Front-End Building Blocks at a 1.8-V Supply
Hiroshi KOMURASAKI  Kazuya YAMAMOTO  Hideyuki WAKADA  Tetsuya HEIMA  Akihiko FURUKAWA  Hisayasu SATO  Takahiro MIKI  Naoyuki KATO  Akira HYOGO  Keitaro SEKINE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/02/01
Vol. E85-A  No. 2  pp. 300-308
Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
CMOSlow voltageRFS bandfront end
  Summary |  Full Text:PDF (1.4MB)

A Sub 1-V L-Band Low Noise Amplifier in SOI CMOS
Hiroshi KOMURASAKI  Hisayasu SATO  Kazuya YAMAMOTO  Kimio UEDA  Shigenobu MAEDA  Yasuo YAMAGUCHI  Nagisa SASAKI  Takahiro MIKI  Yasutaka HORIBA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/02/20
Vol. E83-A  No. 2  pp. 220-227
Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
SOI CMOSlow noise amplifierL bandlow voltageRF
  Summary |  Full Text:PDF (1.7MB)

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: 1999/10/20
Vol. E82-C  No. 10  pp. 1831-1838
Type of Manuscript: PAPER
Category: Electronic Circuits
Keyword: 
resistive mixerLO powerconversion lossInP HEMTconductance
  Summary |  Full Text:PDF (984.7KB)

A 1. 9 GHz Single-Chip RF Front-End GaAs MMIC with Low-Distortion Cascode FET Mixer
Masatoshi NAKAYAMA  Kenichi HORIGUCHI  Kazuya YAMAMOTO  Yutaka YOSHII  Shigeru SUGIYAMA  Noriharu SUEMATSU  Tadashi TAKAGI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/05/20
Vol. E82-C  No. 5  pp. 717-724
Type of Manuscript: Special Section PAPER (Special Issue on Low Distortion Technology for Microwave Devices and Circuits)
Category: 
Keyword: 
GaAs MMICsingle-chip front-endmixercascode FETlow distortion
  Summary |  Full Text:PDF (772.6KB)

A New Broadband Buffer Circuit Technique and Its Application to a 10-Gbit/s Decision Circuit Using Production-Level 0. 5 µm GaAs MESFETs
Miyo MIYASHITA  Naoto ANDOH  Kazuya YAMAMOTO  Junichi NAKAGAWA  Etsuji OMURA  Masao AIGA  Yoshikazu NAKAYAMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/10/20
Vol. E81-C  No. 10  pp. 1627-1638
Type of Manuscript: PAPER
Category: Electronic Circuits
Keyword: 
GaAs MESFETbuffer circuitdecision circuitpeaking inductorsource-follower
  Summary |  Full Text:PDF (968.7KB)

A 1. 9-GHz-Band Single-Chip GaAs T/R-MMIC Front-End Operating with a Single Voltage Supply of 2 V
Kazuya YAMAMOTO  Takao MORIWAKI  Yutaka YOSHI  Kenichiro CHOMEI  Takayuki FUJII  Jun OTSUJI  Yukio MIYAZAKI  Kazuo NISHITANI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/07/20
Vol. E81-C  No. 7  pp. 1112-1121
Type of Manuscript: PAPER
Category: Electronic Circuits
Keyword: 
GaAs MESFETMMIC front-endsingle-chipvoltage-doublernegative-voltage generator
  Summary |  Full Text:PDF (1.1MB)

A New GaAs Negative Voltage Generator for a Power Amplifier Applied to a Single-Chip T/R-MMIC Front-End
Kazuya YAMAMOTO  Kosei MAEMURA  Nobuyuki KASAI  Yutaka YOSHII  Yukio MIYAZAKI  Masatoshi NAKAYAMA  Noriko OGATA  Tadashi TAKAGI  Mutsuyuki OTSUBO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/12/20
Vol. E79-C  No. 12  pp. 1741-1750
Type of Manuscript: PAPER
Category: Semiconductor Materials and Devices
Keyword: 
negative voltage generatorGaAs MESFETpower amplifireMMIC front-end
  Summary |  Full Text:PDF (1MB)

Optical Filter Utilizing the Directional Coupler Composed of the K-and Ag-ion Exchange Waveguides
Kiyoshi KISHIOKA  Kazuya YAMAMOTO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1996/10/20
Vol. E79-C  No. 10  pp. 1405-1412
Type of Manuscript: Special Section PAPER (Special Issue on Electromagnetic Theory-Foundations and Applications)
Category: 
Keyword: 
optical filteroptical deviceoptical (integrated) circuition-exchange waveguidedirectional coupler
  Summary |  Full Text:PDF (776.1KB)