Rapid intermodulation distortion estimation in fully balanced weakly nonlinear Gm-C filters using state-space modeling

State-space modeling of fully differential Gm-C filters with weak nonlinearities is used to develop a fast algorithm for intermodulation distortion estimation. It results in simple analytic formulas that apply directly to Gm-C filters of any order and any fully balanced topology. The algorithm has been verified using SpectreS (SPICE) and Simulink simulation. Theory and simulation results are found in good agreement. Categories and Subject Descriptors B.7 [Integrated Circuits ]: General Terms Algorithms, Design, Theory, Performance Keywords Gm-C filters, harmonic distortion, weak nonlinearity, circuit analysis, fully balanced, fully differential, distortion model, perturbation, state space, fast algorithm.

• Type: Conference
• Year: 2006
• Where: GLVLSI
• Authors: Paul Sotiriadis, Abdullah Celik, Zhaonian Zhang
• Keywords: Fast Algorithm, GLVLSI 2006, Gm-C filters, Intermodulation Distortion Estimation, VLSI