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

Volume

51

Issue

3

fYear

2004

fDate

3/1/2004 12:00:00 AM

Firstpage

359

Lastpage

363

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;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2004.1320792

Filename

1320792