COM-theory analysis of STW resonator structures

Author

Boyanov, B.I. ; Djordjev, K.D. ; Strashilov, V.L. ; Avramov, I.D.

Author_Institution

Dept. of Solid State Phys., Sofia Univ., Bulgaria

Volume

1

fYear

1995

fDate

7-10 Nov 1995

Firstpage

317

Abstract

The dispersion characteristics of surface transverse waves (STWs) on 36° Y cut quartz substrate have been analysed numerically. A closed-form dispersion relation has been introduced in the equations of the coupling-of-modes (COM) theory to account for the variation of trapping with frequency. The transmission and reflection coefficients at the finger edges have been determined from the stopband characteristics. Introducing an electromechanical coupling which varies with the electrode mass loading, quantitative agreement with experimental results on 650 MHz two-port STW resonators has been achieved

Keywords

acoustic dispersion; coupled mode analysis; frequency response; harmonic generation; interdigital transducers; surface acoustic wave resonators; 650 MHz; STW resonator structures; Y-cut quartz substrate; closed-form dispersion relation; coupling-of-modes theory; dispersion characteristics; electrode mass loading; electromechanical coupling; finger edges; reflection coefficients; stopband characteristics; surface skimming bulk waves; surface transverse waves; transmission coefficients; two-port STW resonators; Couplings; Dispersion; Electrodes; Equations; Frequency; Gratings; Physics; Reflection; Sawing machines; Surface waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE

Conference_Location

Seattle, WA

ISSN

1051-0117

Print_ISBN

0-7803-2940-6

Type

conf

DOI

10.1109/ULTSYM.1995.495589

Filename

495589