SAW propagation in periodic arrays including temperature effects

Author

Wallner, P. ; Ruile, Werner ; Weigel, Robert

Author_Institution

Inst. for Commun. & Inf. Eng., Johannes Kepler Univ., Linz, Austria

Volume

1

fYear

1999

fDate

17-20 Oct. 1999

Firstpage

227

Abstract

In order to calculate the temperature behavior of SAW propagation in infinite periodic arrays a numerical procedure was established improving the theory of previous studies. This theory is based upon the orthogonal integration method. Improvements include a consideration of the mass loading effect due to the metal grating, a better numerical performance of the software and full access for calculations in the frequency range of both, stopband and conversion. Including the temperature dependence calculations were performed for quartz and LiTaO₃ leaky-SAW crystal cuts. The temperature behavior of stopband center frequency and width, attenuation, and onset-frequency was investigated and compared to results obtained for homogenous structures.

Keywords

acoustic arrays; lithium compounds; periodic structures; quartz; surface acoustic waves; Floquet theorem; LiTaO₃; SAW propagation; SiO₂; conversion frequency range; infinite periodic arrays; leaky SAW; mass loading effect; metal grating; onset-frequency; orthogonal integration method; quartz; stopband frequency range; temperature effects; Attenuation; Dielectric losses; Dielectric substrates; Frequency conversion; Gratings; Partial differential equations; Software performance; Surface acoustic wave devices; Surface acoustic waves; Temperature dependence;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1999. Proceedings. 1999 IEEE

Conference_Location

Caesars Tahoe, NV

ISSN

1051-0117

Print_ISBN

0-7803-5722-1

Type

conf

DOI

10.1109/ULTSYM.1999.849391

Filename

849391