Masaru KOKUBO


FOREWORD
Masaru KOKUBO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/02/01
Vol. E98-A  No. 2  pp. 459-459
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(248.2KB)

100–1000 MHz Programmable Continuous-Time Filter with Auto-Tuning Schemes and Digital Calibration Sequences for HDD Read Channels
Takahide TERADA Koji NASU Taizo YAMAWAKI Masaru KOKUBO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/06/01
Vol. E95-C  No. 6  pp. 1050-1058
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuits and Related SoC Integration Technologies)
Category: 
Keyword: 
Gm-C filterbiquad filterdigitally assisted compensationauto tuningdigital calibrationanalog front end
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0.7-GHz-Bandwidth DS-UWB-IR System for Low-Power Wireless Communications
Ryosuke FUJIWARA Akira MAEKI Kenichi MIZUGAKI Goichi ONO Tatsuo NAKAGAWA Takayasu NORIMATSU Masaru KOKUBO Masayuki MIYAZAKI Yasuyuki OKUMA Miki HAYAKAWA Shinsuke KOBAYASHI Noboru KOSHIZUKA Ken SAKAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/02/01
Vol. E91-B  No. 2  pp. 518-526
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
impulse radioLR-WPANUWBwireless sensor networks
 Summary | Full Text:PDF(1.4MB)

A Dual-Mode Bluetooth Transceiver with a Two-Point-Modulated Polar-Loop Transmitter and a Frequency-Offset-Compensated Receiver
Takashi OSHIMA Masaru KOKUBO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/08/01
Vol. E90-A  No. 8  pp. 1669-1678
Type of Manuscript:  PAPER
Category: Circuit Theory
Keyword: 
dual-mode BluetoothGFSKπ/4-DQPSKpolar looptwo-point modulationDC-DC converterpower efficiencydelay detectorfrequency offset
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Intermittent Wireless Communication System for Low-Power Sensor Networks
Akira MAEKI Masayuki MIYAZAKI Minoru OHGUSHI Masaru KOKUBO Kei SUZUKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/12/01
Vol. E89-B  No. 12  pp. 3438-3441
Type of Manuscript:  LETTER
Category: Network
Keyword: 
wireless sensor networkmultiple access
 Summary | Full Text:PDF(473.4KB)

Spread-Spectrum Clock Generator for Serial ATA with Multi-Bit ΣΔ Modulator-Controlled Fractional PLL
Masaru KOKUBO Takashi KAWAMOTO Takashi OSHIMA Takayuki NOTO Masato SUZUKI Shigeyuki SUZUKI Takashi HAYASAKA Tomoaki TAKAHASHI Jun KASAI 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/11/01
Vol. E89-C  No. 11  pp. 1682-1688
Type of Manuscript:  PAPER
Category: Electronic Circuits
Keyword: 
PLLspread-spectrumjitterserial ATA
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A GFSK Transmitter Architecture for a Bluetooth RF-IC, Featuring a Variable-Loop-Bandwidth Phase-Locked Loop Modulator
Masaru KOKUBO Takashi OSHIMA Katsumi YAMAMOTO Kunio TAKAYASU Yoshiyuki EZUMI Shinya AIZAWA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/03/01
Vol. E88-C  No. 3  pp. 385-394
Type of Manuscript:  PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
FSKmodulatordelta-sigmaPLLvariable loop bandwidthBluetooth
 Summary | Full Text:PDF(1.7MB)

A Small-Chip-Area Transceiver IC for Bluetooth Featuring a Digital Channel-Selection Filter
Masaru KOKUBO Masaaki SHIDA Takashi OSHIMA Yoshiyuki SHIBAHARA Tatsuji MATSUURA Kazuhiko KAWAI Takefumi ENDO Katsumi OSAKI Hiroki SONODA Katsumi YAMAMOTO Masaharu MATSUOKA Takao KOBAYASHI Takaaki HEMMI Junya KUDOH Hirokazu MIYAGAWA Hiroto UTSUNOMIYA Yoshiyuki EZUMI Kunio TAKAYASU Jun SUZUKI Shinya AIZAWA Mikihiko MOTOKI Yoshiyuki ABE Takao KUROSAWA Satoru OOKAWARA 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/06/01
Vol. E87-C  No. 6  pp. 878-887
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit and Device Technologies)
Category: 
Keyword: 
Bluetooth transceiverlow-IFVCOchannel-selection filter
 Summary | Full Text:PDF(1.5MB)

Low Supply Voltage and Low-Power 1-GHz PLL Frequency Synthesizer for Mobile Terminals
Masaru KOKUBO Yoshiyuki SHIBAHARA Hirokazu AOKI Changku HWANG 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/01/01
Vol. E86-C  No. 1  pp. 71-78
Type of Manuscript:  PAPER
Category: Integrated Electronics
Keyword: 
PLLVCOcharge-pumpdynamic output stagestability
 Summary | Full Text:PDF(1.5MB)

A 0.7-V 200-MHz Self-Calibration PLL
Yoshiyuki SHIBAHARA Masaru KOKUBO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2002/08/01
Vol. E85-C  No. 8  pp. 1577-1580
Type of Manuscript:  Special Section PAPER (Special Issue on High-Performance Analog Integrated Circuits)
Category: 
Keyword: 
PLLVCOcalibrationleakage currentlow voltage
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Low Voltage/Low Power CMOS VCO
Changku HWANG Masaru KOKUBO Hirokazu AOKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/03/25
Vol. E82-A  No. 3  pp. 424-430
Type of Manuscript:  Special Section PAPER (Special Section on Selected Papers from the 11th Workshop on Circuits and Systems in Karuizawa)
Category: 
Keyword: 
microprocessorPLLV-I convertercurrent and voltage controlled oscillator (CCO and VCO)
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A CMOS Offset Phase Locked Loop for a GSM Transmitter
Taizo YAMAWAKI Masaru KOKUBO Hiroshi HAGISAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/02/25
Vol. E82-A  No. 2  pp. 307-312
Type of Manuscript:  Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
Category: 
Keyword: 
CMOS GSM transmitter PLL
 Summary | Full Text:PDF(521KB)