Title :
A two parameter coupling-of-modes model for shear horizontal type SAW propagation in periodic gratings
Author :
Plessky, Victor P.
Author_Institution :
Adv. SAW Products SA, Bevaix
fDate :
31 Oct-3 Nov 1993
Abstract :
A closed form dispersion relation for shear surface acoustic waves (BGW, STW, leaky waves) propagating in periodic structures in the frequency range corresponding to the Bragg stopband is found. The consideration includes the changes in spatial structure of the waves mutually reflecting on the grating as well as bulk wave scattering. A comparison with numerically obtained dispersion curves for leaky waves on 36-LiTaO3 and with experimental data on STW in quartz shows good agreement
Keywords :
piezoelectric devices; surface acoustic wave devices; ultrasonic dispersion; ultrasonic propagation; 36-LiTaO3; BGW; Bragg stopband; LiTaO3; STW; closed form dispersion relation; dispersion curves; leaky waves; periodic gratings; periodic structures; quartz; shear horizontal type SAW propagation; shear surface acoustic waves; spatial structure; two parameter coupling-of-modes model; Acoustic propagation; Acoustic scattering; Acoustic waves; Equations; Frequency; Gratings; Periodic structures; Surface acoustic wave devices; Surface acoustic waves; Surface waves;
Conference_Titel :
Ultrasonics Symposium, 1993. Proceedings., IEEE 1993
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1993.339679
