Koichi MURATA


An InP-Based 27-GHz-Bandwidth Limiting TIA IC Designed to Suppress Undershoot and Ringing in Its Output Waveform
Hiroyuki FUKUYAMA Michihiro HIRATA Kenji KURISHIMA Minoru IDA Masami TOKUMITSU Shogo YAMANAKA Munehiko NAGATANI Toshihiro ITOH Kimikazu SANO Hideyuki NOSAKA Koichi MURATA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2016/03/01
Vol. E99-C  No. 3  pp. 385-396
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
transimpedance amplifierlimiting amplifieroutput-stage amplifierundershootringingRSSI
 Summary | Full Text:PDF(4.4MB)

120-GHz-Band Amplifier Module with Hermetic Sealing Structure for 10-Gbit/s Wireless System
Hiroyuki TAKAHASHI Toshihiko KOSUGI Akihiko HIRATA Jun TAKEUCHI Koichi MURATA Naoya KUKUTSU 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2014/06/01
Vol. E97-C  No. 6  pp. 583-591
Type of Manuscript:  PAPER
Category: Electronic Components
Keyword: 
millimeter-wavewaveguideconnection techniquewireless communication
 Summary | Full Text:PDF(2.3MB)

High ESD Breakdown-Voltage InP HBT Transimpedance Amplifier IC for Optical Video Distribution Systems
Kimikazu SANO Munehiko NAGATANI Miwa MUTOH Koichi MURATA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/08/01
Vol. E95-C  No. 8  pp. 1317-1322
Type of Manuscript:  Special Section PAPER (Special Section on Heterostructure Microelectronics with TWHM 2011)
Category: III-V High-Speed Devices and Circuits
Keyword: 
InP HBTelectro static discharge (ESD)transimpedance amplifieroptical video distributionlinearitylow-noise
 Summary | Full Text:PDF(1.4MB)

Effects of Preamplifier Nonlinearity on PMD Equalization with Electronic Dispersion Compensation for 43G DQPSK
Toshihiro ITOH Tomofumi FURUTA Hiroyuki FUKUYAMA Koichi MURATA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/07/01
Vol. E94-C  No. 7  pp. 1187-1192
Type of Manuscript:  Special Section PAPER (Joint Special Section on Opto-electronics and Communications for Future Optical Network)
Category: 
Keyword: 
EDCPMDDQPSK
 Summary | Full Text:PDF(1.2MB)

A 24-GS/s 6-bit R-2R Current-Steering DAC in InP HBT Technology
Munehiko NAGATANI Hideyuki NOSAKA Shogo YAMANAKA Kimikazu SANO Koichi MURATA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/08/01
Vol. E93-C  No. 8  pp. 1279-1285
Type of Manuscript:  Special Section PAPER (Special Section on Heterostructure Microelectronics with TWHM 2009)
Category: III-V High-Speed Devices and Circuits
Keyword: 
digital-to-analog converter (DAC)R-2Rcurrent-steeringInP HBT
 Summary | Full Text:PDF(1.1MB)

Study of a PMD Tolerance Extension by InP HBT Analog EDC IC without Adaptive Control in 43G DQPSK Transmission
Toshihiro ITOH Kimikazu SANO Hiroyuki FUKUYAMA Koichi MURATA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/05/01
Vol. E93-C  No. 5  pp. 573-578
Type of Manuscript:  Special Section PAPER (Special Section on Fundamentals and Applications of Advanced Semiconductor Devices)
Category: Compound Semiconductor Devices
Keyword: 
electronic dispersion compensationfeed-forward equalizer43G RZ-DQPSK
 Summary | Full Text:PDF(6.4MB)

Carrier-Suppressed Return-to-Zero Pulse Generation Using Mode-Locked Lasers for 40-Gbit/s Transmission
Kenji SATO Shoichiro KUWAHARA Yutaka MIYAMOTO Koichi MURATA Hiroshi MIYAZAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/02/01
Vol. E85-B  No. 2  pp. 410-415
Type of Manuscript:  Special Section PAPER (Special Issue on 40 Gbit/s Optical Transmission Technologies)
Category: 
Keyword: 
semiconductor mode-locked laserphase inversionchirped gratinghigh-speed transmission
 Summary | Full Text:PDF(396KB)

50-Gbit/s Demultiplexer IC Module Using InAlAs/InGaAs/InP HEMTs
Kimikazu SANO Koichi MURATA Yasuro YAMANE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/11/25
Vol. E83-C  No. 11  pp. 1788-1790
Type of Manuscript:  LETTER
Category: Electronic Circuits
Keyword: 
InP HEMTsdemultiplexerpackaged IC modulelightwave communications
 Summary | Full Text:PDF(1.5MB)

SCFL-Compatible 40-Gbit/s RTD/HEMT Selector Circuit
Kimikazu SANO Koichi MURATA Hideaki MATSUZAKI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/10/25
Vol. E83-C  No. 10  pp. 1690-1692
Type of Manuscript:  LETTER
Category: Electronic Circuits
Keyword: 
resonant tunneling diodes (RTDs)HEMTsselector circuitSCFLlightwave communications
 Summary | Full Text:PDF(262.1KB)

70-Gbit/s Multiplexer and 50-Gbit/s Decision IC Modules Using InAlAs/InGaAs/InP HEMTs
Koichi MURATA Taiichi OTSUJI Eiichi SANO Shunji KIMURA Yasuro YAMANE 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2000/07/25
Vol. E83-C  No. 7  pp. 1166-1169
Type of Manuscript:  LETTER
Category: Integrated Electronics
Keyword: 
multiplexerdecisionmoduleInAlAs/InGaAs/InP HEMToptical communication
 Summary | Full Text:PDF(302.6KB)

Ultra-Fast Optoelectronic Decision Circuit Using Resonant Tunneling Diodes and a Uni-Traveling-Carrier Photodiode
Kimikazu SANO Koichi MURATA Taiichi OTSUJI Tomoyuki AKEYOSHI Naofumi SHIMIZU Masafumi YAMAMOTO Tadao ISHIBASHI Eiichi SANO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/09/25
Vol. E82-C  No. 9  pp. 1638-1646
Type of Manuscript:  Special Section PAPER (Special Issue on Integrated Electronics and New System Paradigms)
Category: Application of Resonant Tunneling Devices
Keyword: 
optoelectronic IC (OEIC)decision circuitresonant tunneling diodeuni-traveling-carrier photodiodeSPICElightwave communications
 Summary | Full Text:PDF(1.4MB)

An Optoelectronic Clock Recovery Circuit Using a Resonant Tunneling Diode and a Uni-Traveling-Carrier Photodiode
Koichi MURATA Kimikazu SANO Tomoyuki AKEYOSHI Naofumi SHIMIZU Eiichi SANO Masafumi YAMAMOTO Tadao ISHIBASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/08/25
Vol. E82-B  No. 8  pp. 1228-1235
Type of Manuscript:  Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Optical Active Devices and Modules
Keyword: 
optoelectronic integrated circuitclock recovery circuitresonant tunneling diodeuni-traveling-carrier photodiodeoptical communication systems
 Summary | Full Text:PDF(1.6MB)

An Optoelectronic Clock Recovery Circuit Using a Resonant Tunneling Diode and a Uni-Traveling-Carrier Photodiode
Koichi MURATA Kimikazu SANO Tomoyuki AKEYOSHI Naofumi SHIMIZU Eiichi SANO Masafumi YAMAMOTO Tadao ISHIBASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/08/25
Vol. E82-C  No. 8  pp. 1494-1501
Type of Manuscript:  Special Section PAPER (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
Category: Optical Active Devices and Modules
Keyword: 
optoelectronic integrated circuitclock recovery circuitresonant tunneling diodeuni-traveling-carrier photodiodeoptical communication systems
 Summary | Full Text:PDF(1.6MB)

Exclusive OR/NOR IC for 40-Gbit/s Clock Recovery Circuit
Koichi MURATA Taiichi OTSUJI Takatomo ENOKI Yohtaro UMEDA Mikio YONEYAMA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1999/03/25
Vol. E82-C  No. 3  pp. 456-464
Type of Manuscript:  Special Section PAPER (Special Issue on Ultra-High-Speed IC and LSI Technology)
Category: Compound Semiconductor Devices
Keyword: 
exclusive OR/NORclock recovery circuitInP HEMT
 Summary | Full Text:PDF(561.4KB)

An Analytical Toggle Frequency Expression for Source-Coupled FET Logic (SCFL) Frequency Dividers
Koichi MURATA Taiichi OTSUJI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1998/07/25
Vol. E81-C  No. 7  pp. 1106-1111
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
analytical expressiontoggle frequencySCFLfrequency dividerGaAs MESFET
 Summary | Full Text:PDF(590.9KB)

A 40-Gbit/s Decision IC Fabricated with 0.12-µm GaAs MESFETs
Koichi MURATA Taiichi OTSUJI Mikio YONEYAMA Masami TOKUMITSU 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1997/12/25
Vol. E80-C  No. 12  pp. 1624-1627
Type of Manuscript:  LETTER
Category: Electronic Circuits
Keyword: 
decision ICMESFETsuper-dynamic D-FFwideband amplifier
 Summary | Full Text:PDF(272.4KB)

Multiple DmB1C/DmB1M Coding Scheme for High-Speed Optical Multiplex Transmission
Koichi MURATA Yoshihiko UENATSU Yoshiaki YAMABAYASHI Yukio KOBAYASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1997/08/25
Vol. E80-B  No. 8  pp. 1248-1254
Type of Manuscript:  PAPER
Category: Optical Communication
Keyword: 
DmB1C codeDmB1M codemultiplex transmissionoptical interconnection
 Summary | Full Text:PDF(579.3KB)

Parallel mB1C Word Alignment Procedure and Its Performance for High-Speed Optical Transmission
Yoshihiko UEMATSU Koichi MURATA Shinji MATSUOKA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1997/03/25
Vol. E80-B  No. 3  pp. 476-482
Type of Manuscript:  PAPER
Category: Communication Systems and Transmission Equipment
Keyword: 
mBlC codeDmB1M codeword alignmentparallel processingsignal flow graph
 Summary | Full Text:PDF(556.4KB)

IC-Oriented Self-Aligned High-Performance AlGaAs/GaAs Ballistic Collection Transistors and Their Applications to High-Speed ICs
Yutaka MATSUOKA Shoji YAMAHATA Satoshi YAMAGUCHI Koichi MURATA Eiichi SANO Tadao ISHIBASHI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 1993/09/25
Vol. E76-C  No. 9  pp. 1392-1401
Type of Manuscript:  Special Section PAPER (Special Issue on Heterostructure Electron Devices)
Category: 
Keyword: 
heterojunction bipolar transistorself-aligned structureballistic collection transistorlaunchercutoff frequencymaximum oscillation frequencymultiplexerpreamplifierselectorfrequency divider
 Summary | Full Text:PDF(1.2MB)

10Gbit/s, 35mV Decision IC Using 0.2µm GaAs MESFETs
Masanobu OHHATA Minoru TOGASHI Koichi MURATA Satoshi YAMAGUCHI Masao SUZUKI Kazuo HAGIMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1993/07/25
Vol. E76-B  No. 7  pp. 745-747
Type of Manuscript:  Special Section LETTER (Special Section of Letters Selected from the 1992 IEICE Fall Conference and the 1993 IEICE Spring Conference)
Category: 
Keyword: 
decision ICdecision circuitGaAs MESFETLSCFLSCFL interfaceSAINT
 Summary | Full Text:PDF(274.2KB)