Automated fitting and rational modeling algorithm for EM-based S-parameter data

Abstract

A smart adaptive algorithm is presented to model the spectral response of general passive planar electrical structures over a frequency range of interest, based on a limited number of data samples. Rational (pole-zero) functions are used to model and interpolate the Sparameter data obtained through full-wave electro-magnetic simulations. 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.