A fast state-space algorithm to estimate harmonic distortion in fully differential weakly nonlinear Gm-C filters

In this paper, we present a fast algorithm to derive the iiiharmonic distortion in fully balanced Gm- C filters. It is based on Vi i state-space modeling and decomposition of the filter into a cascade g11 of an input stage, a core stage and an output stage. This approach _-results in compact expressions for the distortion that involve explicitly the structural matrices of the filter and the values of the circuit elements. The algorithm was verified using a third-order low pass Butterworth filter designed in a 0.5,um CMOS process. The theoretical results are found

• Type: Conference
• Year: 2006
• Where: ISCAS
• Authors: Zhaonian Zhang, Abdullah Celik, Paul Sotiriadis
• Keywords: Fast Algorithm, Iiiharmonic Distortion, ISCAS 2006, Pass Butterworth Filter