A four-inputs single-output current-mode biquad filter using a minimum number of active and passive components - Winai Jaikla; Supawat Lawanwisut; Montree Siripruchyanun; Pipat Prommee (My University, 2012)
Keywords: Digital biquad filter; Operational transconductance amplifier; Transconductance; Analog and Mixed-Signal Circuit Design