Title :
Comprehensive characterization of Surface acoustic wave trapping in a periodic array of high aspect ratio electrodes
Author :
Masson, J. ; Laude, V. ; Robert, L. ; Daniau, W. ; Khelif, A. ; Ballandras, S.
Author_Institution :
UMR CNRS, Besancon
fDate :
May 29 2007-June 1 2007
Abstract :
A comprehensive characterization of surface acoustic waves trapped under high aspect ratio electrode gratings atop LiNbO3 (YXl)/128deg has been achieved. We have analyzed the motion of the electrodes corresponding to the excited modes and we have reported the quality factor and the coupling coefficient evolution versus phase velocity. Very high coupling coefficients can be obtained for low velocity (1000 m.s-1) elliptically polarized modes. TCF of some mode also were measured and found close to the sensitivity of standard SAW.
Keywords :
Q-factor; surface acoustic wave devices; comprehensive characterization; coupling coefficient evolution; electrode gratings; high aspect ratio electrodes; periodic array; phase velocity; quality factor; surface acoustic wave trapping; Acoustic arrays; Acoustic testing; Acoustic transducers; Acoustic waves; Electrodes; Frequency; Gratings; Q factor; Surface acoustic wave devices; Surface acoustic waves;
Conference_Titel :
Frequency Control Symposium, 2007 Joint with the 21st European Frequency and Time Forum. IEEE International
Conference_Location :
Geneva
Print_ISBN :
978-1-4244-0646-3
Electronic_ISBN :
1075-6787
DOI :
10.1109/FREQ.2007.4319175
