A new technique for the extraction of SPICE-type equivalent circuits from measured or computed S-parameters of microstrip components and discontinuities

This paper introduces a new technique based on the application of the Genetic Algorithm (GA) for extracting the equivalent circuits for measured or computed S-parameters that can be inserted into SPICE simulations. The GA is a robust optimization tool that is shown to yield excellent result for the sample test case of a right angle bend in a microstrip line.