A novel large input range source-follower based bi-quad filter cell is proposed offering an additional degree of freedom to the position of the poles and zeros. Simulation results of a 4th order fully differential elliptical filter in a 0.13μm CMOS technology confirm a power consumption of 160μA @ 1.2V, an IIP3 of 6.3 dBm and a steepness of 177 db/decade.

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@inproceedings{Praet2013biquadFC, title={bi-quad filter cell}, author={Christophe van Praet and Guy Torfs and Johan Bauwelinck and Jan Vandewege}, year={2013} }