High even-order fully-differential biquadratic continuous-time low-pass Gm-C filter

This article presents a realization of high even-order FD biquadratic low-pass Gm-C filter for alternative and conventional structures based on SE (single-ended) structure. The performances are examined through PSpice simulations. The description includes examples as 2^nd, 4^th and 6^th order biquadratic filter topology, both alternative and conventional structures. They show a good agreement with theoretically depicted.