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

fYear

2007

fDate

May 29 2007-June 1 2007

Firstpage

745

Lastpage

748

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium, 2007 Joint with the 21st European Frequency and Time Forum. IEEE International

Conference_Location

Geneva

ISSN

1075-6787

Print_ISBN

978-1-4244-0646-3

Electronic_ISBN

1075-6787

Type

conf

DOI

10.1109/FREQ.2007.4319175

Filename

4319175