Fast FEM/BEM Simulation of SAW Devices via Asymptotic Waveform Evaluation

Abstract—The finite element method/boundary element method (FEM/BEM) computation model applied to sur-face acoustic wave devices requires the solution of a large linear system for each frequency point. An asymptotic waveform evaluation technique is used to obtain an approx-imate solution of the linear system that is valid over a large frequency bandwidth. The approximate solution was shown to be very accurate and vastly reduces the computation time. I