Derivation of coupling-of-modes parameters for SAW device analysis by means of boundary element method

Author

Hashimoto, Ken-Ya ; Yamaguchi, Masatsune

Author_Institution

Dept. of Electr. & Electron. Eng., Chiba Univ., Japan

fYear

1991

fDate

8-11 Dec 1991

Firstpage

21

Abstract

A method for derivation of coupling-of-modes (COM) parameters for surface acoustic wave (SAW) device analysis is proposed. Emphasis is laid upon the COM parameter derivation by means of the boundary element method (BEM) analysis, and the COM analysis of a floating electrode unidirectional transducer. Results have shown that the transducer characterization using the COM parameters derived from the BEM analysis agrees surprisingly with that obtained by the direct application of the BEM analysis. It is concluded that once the COM parameters are properly determined, the characterization of SAW interdigital transducers having a large number of fingers and an arbitrary geometry can be performed most precisely and rapidly

Keywords

acoustic transducers; boundary-value problems; surface acoustic wave devices; SAW device analysis; boundary element method; coupling-of-modes parameters; floating electrode unidirectional transducer; surface acoustic wave; Acoustic transducers; Acoustic waves; Boundary element methods; Electrodes; Fingers; Geometry; Polynomials; Surface acoustic wave devices; Surface acoustic waves; Surface fitting;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1991. Proceedings., IEEE 1991

Conference_Location

Orlando, FL

Type

conf

DOI

10.1109/ULTSYM.1991.234123

Filename

234123