A modified y‐parameter model for computer‐aided analysis using spice2

Abstract

A transfer admittance is treated as a two-terminal network driven by cascaded dependent sources. By complex-curve fitting, each of the four admittances of a conventional two-port model can be approximated over a wideband with a rational function of frequency. A SPICE2-acceptable R-L-C two-port model can then be derived by applying continued fractions to the rational functions. Examples are included to demonstrate the applications of this method.