A New Fractional-N PLL Frequency Synthesizer. - Yasuaki Sumi; Shigeki Obote; Yutaka Fukui; Kazutoshi Tsuda; Kouichi Syoubu (J. Circuits Syst. Comput., 1997)

DSP-FLL for FSK demodulation. - Shigeki Obote; Yasuaki Sumi; Kouichi Syoubu; Yoshio Itoh; Yutaka Fukui (EUSIPCO, 1998)

PLL frequency synthesizer system utilizing multi-programmable dividers. - Yasuaki Sumi; Kouichi Syoubu; Shigeki Obote; Yutaka Fukui; Yoshio Itoh (EUSIPCO, 1998)

Performance improvement in a binary phase comparator type PLL frequency synthesizer. - Shigeki Obote; Yasuaki Sumi; Naoki Kitai; Yutaka Fukui; Yoshio Itoh (ISCAS (4), 1999)

Dead-zone-less PLL frequency synthesizer by hybrid phase detectors. - Yasuaki Sumi; Shigeki Obote; Naoki Kitai; Ryousuke Furuhashi; Hidekazu Ishii; Yoshitaka Matsuda; Yutaka Fukui (ISCAS (4), 1999)

PLL frequency synthesizer with an auxiliary programmable divider. - Yasuaki Sumi; Shigeki Obote; Naoki Kitai; Ryousuke Furuhashi; Yoshitaka Matsuda; Yutaka Fukui (ISCAS (2), 1999)

PLL synthesizer with multi-programmable divider and multi-phase detector. - Yasuaki Sumi; Shigeki Obote; Naoki Kitai; Hidekazu Ishii; Ryousuke Furuhashi (IEEE Trans. Consumer Electron., 1999)

Proposal for a convergence criterion to the active net in two steps. - Yoshitaka Matsuda; Yasuaki Sumi; Dai Kataoka; Makoto Ota; Noboru Yabuki; Yutaka Fukui; Shigehiko Miki (ISCAS, 2000)

A Realization of Multiple Circuit Transfer Functions Using OTA-C Integrator Loop Structure. - Takao Tsukutani; Masami Higashimura; Yasutomo Kinugasa; Yasuaki Sumi; Yutaka Fukui (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2003)

Current-mode universal biquad circuit using MO-OTAs and DO-CCII. - Takao Tsukutani; Yasuaki Sumi; Masami Higashimura; Yutaka Fukui (ISCAS (2), 2005)

A control system for electrical appliances using eye-gaze input. - Hidenobu Nakayama; Noboru Yabuki; Hiroyuki Inoue; Yasuaki Sumi; Takao Tsukutani (ISPACS, 2012)