Comparative Analysis of Reconfigurable Low Pass Filter using Biquad Active, Ladder Gm-C and Multiple Loop Feedback Techniques

Abstract

An important concern for LPF with switchable attributes at baseband is to select a appropriate filter structure. Among the different approaches three approaches are prominently used named LC ladder simulation biquad cascade and multiple loop feedback (MLF). This study aimed at comparative analysis of three different low pass filter approaches. The filters are realized using Biquad Technique, ladder technique and MLF approach. Simulations are done using different CMOS technology. In this paper a comparison is made using different parameters. In general, the results prove that a good agreement between all the three approaches usng SPICE simulations.