Adaptive Building of Accurate and Stable PEEC Models for EMC Applications

A new adaptive technique is presented for building accurate and stable Partial Element Equivalent Circuit (PEEC) models over a wide frequency range. Rational models are generated for impedances corresponding to partial inductances and coefficients of potential over a frequency range of interest, based on a limited number of samples. Delay extraction is applied in order to keep the order of the rational models as low as possible. The adaptive algorithm doesn't require any a-priori knowledge of the dynamics of the system to select an appropriate sample distribution and an appropriate model complexity.