A generalized fast frequency sweep algorithm for coupled circuit-EM simulations

Frequency domain techniques are popular for analyzing electromagnetics (EM) and coupled circuit-EM problems. These techniques, such as the method of moments (MoM) and the finite element method (FEM), are used to determine the response of the EM portion of the problem at a single frequency. Since only one frequency is solved at a time, it may take a long time to calculate the parameters for wideband devices. A fast frequency sweep based on the asymptotic wave expansion (AWE) method is developed and applied to generalized mixed circuit-EM problems. The AWE method, which was originally developed for lumped-load circuit simulations, has recently been shown to be effective at quasi-static and low frequency full-wave simulations (Jandhyala, V. and West, T., "A fast frequency sweep method for mixed electromagnetic and circuit simulation", University of Washington Internal Report). We apply it to a full-wave MoM solver, capable of solving for metals, dielectrics and coupled circuit-EM problems.