Title :
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
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;
Conference_Titel :
Ultrasonics Symposium, 1991. Proceedings., IEEE 1991
Conference_Location :
Orlando, FL
DOI :
10.1109/ULTSYM.1991.234123
