Two Output OTA Biquad Filter
This paper presents a current mode biquad filter, which uses multiple output OTAs. The proposed filter design has electronic tunability because of the use of OTAs and is suitable for implementation in CMOS technology because of the use of grounded capacitors.
A. Qadir "Two Output OTA Biquad Filter", Applied Mechanics and Materials, Vols. 110-116, pp. 5044-5047, 2012