Realization of a 1-V active filter using a linearization technique employing plurality of emitter-coupled pairs. - Hiroshi Tanimoto; Mikio Koyama; Yoshihiro Yoshida (IEEE J. Solid State Circuits, 1991)

A 2.5-V active low-pass filter using all-n-p-n Gilbert cells with a 1-Vp-p range. - Mikio Koyama; Tadashi Arai; Hiroshi Tanimoto; Yoshihiro Yoshida (IEEE J. Solid State Circuits, 1993)

A 2.7-4.5 V single chip GSM transceiver RF integrated circuit. - Trudy D. Stetzler; Irving G. Post; Joseph H. Havens; Mikio Koyama (IEEE J. Solid State Circuits, 1995)