A subscriber digital signal processor LSI for PCM applications. - Kazuo Yamakido; Masaru Kokubo; Takahiko Kozaki; Shigeo Nishita; Tatsuya Nishihara; Norio Miyake; Ken'ichi Ohwada (IEEE J. Solid State Circuits, 1988)

A 2.7-V GSM RF transceiver IC. - Taizo Yamawaki; Masaru Kokubo; Kiyoshi Irie; Hiroaki Matsui; Kazuaki Hori; Takefumi Endou; Hiroshi Hagisawa; Tomio Furuya; Yoshimi Shimizu; Makoto Katagishi; Julian Robert Hildersley (IEEE J. Solid State Circuits, 1997)

A novel UWB impulse-radio transmitter with all-digitally-controlled pulse generator. - Takayasu Norimatsu; Ryosuke Fujiwara; Masaru Kokubo; Masayuki Miyazaki; Yasuyuki Okuma; Miki Hayakawa; Shinsuke Kobayashi; Noboru Koshizuka; Ken Sakamura (ESSCIRC, 2005)

Rapid signal acquisition for low-rate carrier-based ultra-wideband impulse radio. - Ryosuke Fujiwara; M. Shida; Akira Maeki; Kenichi Mizugaki; Masaru Kokubo; Masayuki Miyazaki (ISCAS (5), 2005)

Simple polar-loop transmitter for dual-mode Bluetooth. - Takashi Oshima; Masaru Kokubo (ISCAS (4), 2005)

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 (IEICE Trans. Electron., 2005)

Spread-Spectrum Clock Generator for Serial ATA with Multi-Bit Sigma-Delta Modulator-Controlled Fractional PLL. - Masaru Kokubo; Takashi Kawamoto; Takashi Oshima; Takayuki Noto; Masato Suzuki; Shigeyuki Suzuki; Takashi Hayasaka; Tomoaki Takahashi; Jun Kasai (IEICE Trans. Electron., 2006)

Intermittent Wireless Communication System for Low-Power Sensor Networks. - Akira Maeki; Masayuki Miyazaki; Minoru Ohgushi; Masaru Kokubo; Kei Suzuki (IEICE Trans. Commun., 2006)

A Dual-Mode Bluetooth Transceiver with a Two-Point-Modulated Polar-Loop Transmitter and a Frequency-Offset-Compensated Receiver. - Takashi Oshima; Masaru Kokubo (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2007)

A UWB-IR Transmitter With Digitally Controlled Pulse Generator. - Takayasu Norimatsu; Ryosuke Fujiwara; Masaru Kokubo; Masayuki Miyazaki; Akira Maeki; Yuji Ogata; Shinsuke Kobayashi; Noboru Koshizuka; Ken Sakamura (IEEE J. Solid State Circuits, 2007)

A low-jitter 1.5-GHz and 350-ppm spread-spectrum serial ATA PHY using reference clock with 400-ppm production-frequency tolerance. - Takashi Kawamoto; Masaru Kokubo (ESSCIRC, 2008)

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; et al. (IEICE Trans. Commun., 2008)

A low-jitter 1.5-GHz and large-EMI reduction 10-dBm spread-spectrum clock generator for Serial-ATA. - Takashi Kawamoto; Masaru Kokubo (ASP-DAC, 2009)

100-1000 MHz cutoff frequency, 0-12 dB boost programmable Gm-C filter with digital calibration for HDD read channel. - Takahide Terada; Taizo Yamawaki; Masaru Kokubo; Koji Nasu (ESSCIRC, 2009)

Adaptive channel diversity method based on ISA100.11a standard for wireless industrial monitoring. - Masayuki Miyazaki; Ryosuke Fujiwara; Kenichi Mizugaki; Masaru Kokubo (RWS, 2012)

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 (IEICE Trans. Electron., 2012)

Verification of interference avoidance effect with Adaptive Channel Diversity method based on ISA100.11a standard. - Yasutaka Serizawa; Takashi Yano; Masayuki Miyazaki; Kenichi Mizugaki; Ryosuke Fujiwara; Masaru Kokubo (RWS, 2013)

An electrical and optical concurrent design methodology for enlarging jitter margin of 25.8-Gb/s optical interconnects. - Takashi Takemoto; Hiroki Yamashita; Yasunobu Matsuoka; Yong Lee; Masaru Kokubo (CICC, 2015)

Foreword. - Masaru Kokubo (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2015)

A jitter-reduction packaging structure for a 56-Gb/s NRZ modulated optical receiver. - Takashi Takemoto; Yasunobu Matsuoka; Hiroki Yamashita; Yong Lee; Kenichi Akita; Hideo Arimoto; Masaru Kokubo (OFC, 2016)

A 50.6-Gb/s 7.8-mW/Gb/s -7.4-dBm sensitivity optical receiver based on 0.18-µm SiGe BiCMOS technology. - Takashi Takemoto; Yasunobu Matsuoka; Hiroki Yamashita; Yong Lee; Kenichi Akita; Hideo Arimoto; Masaru Kokubo; Tatemi Ido (VLSI Circuits, 2016)

A 50-Gb/s High-Sensitivity (-9.2 dBm) Low-Power (7.9 pJ/bit) Optical Receiver Based on 0.18-µm SiGe BiCMOS Technology. - Takashi Takemoto; Yasunobu Matsuoka; Hiroki Yamashita; Yong Lee; Hideo Arimoto; Masaru Kokubo; Tatemi Ido (IEEE J. Solid State Circuits, 2018)

Modulation Configurations of Phase Locked Loops for High-Speed and High-Precision Wired and Wireless Applications. - Masaru Kokubo (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2023)