A Differential Input/Output Linear MOS Transconductor. - Pravit Tongpoon; Fujihiko Matsumoto; Takeshi Ohbuchi; Hitoshi Takeuchi (IEICE Trans. Electron., 2011)

Design of a floating-type impedance scaling circuit for large capacitances. - Fujihiko Matsumoto; Tatsuya Fujii; Syuzo Nishioka; Tomomi Abe; Takeshi Ohbuchi (ISPACS, 2013)

A design of a low-transconductance linear transconductor utilizing body effect for low frequency applications. - Takeshi Ohbuchi; Fujihiko Matsumoto (ISPACS, 2013)

Study on offset reduction method for a fully differential filter employing symmetrical floating impedance scaling circuits. - Fujihiko Matsumoto; Shota Matsuo; Syuzo Nishioka; Hakumi Abe; Takeshi Ohbuchi (ISPACS, 2016)

A linear transconductor utilizing body transconductance for low-power and low frequency applications. - Takeshi Ohbuchi; Fujihiko Matsumoto (ISPACS, 2016)

A design method of low frequency universal filter employing MOCCIIs. - Fujihiko Matsumoto; Takeshi Ohbuchi; Hironori Nakamura; Shota Matsuo (MIXDES, 2017)

Improvement technique of tuning range for local-feedback MOS transconductor. - Takeshi Ohbuchi; Fujihiko Matsumoto (MIXDES, 2017)

A Design of a Programmable Impedance Scaling Circuit for Low Frequency Applications. - Takeshi Ohbuchi; Koutarou Fujishiro; Fujihiko Matsumoto (ISPACS, 2018)