Title :
Fast FEM/BEM simulation of SAW devices via asymptotic waveform evaluation
Author :
Laude, Vincent ; Reinhardt, Alexandre ; Wilm, Mikaël ; Khelif, Abdelkrim ; Ballandras, Sylvain
Author_Institution :
Lab. de Phys. et de Metrologie des Oscillateurs, Centre Nat. de la Recherche Scientifique, Besancou, France
fDate :
3/1/2004 12:00:00 AM
Abstract :
The finite element method/boundary element method (FEM/BEM) computation model applied to surface 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 approximate 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.
Keywords :
boundary-elements methods; finite element analysis; surface acoustic wave devices; BEM simulation; FEM simulation; SAW devices; approximate solution; asymptotic waveform evaluation; boundary element method computation model; computation time; finite element method computation model; large frequency bandwidth; linear system; surface acoustic wave devices; Acoustic waves; Approximation methods; Computational modeling; Electrodes; Finite element methods; Frequency; Gratings; Surface acoustic wave devices; Surface acoustic waves; Surface treatment;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2004.1320792
