Title :
Contribution to the Non-linear Properties of the SAW Transducers
Author_Institution :
Tech. Univ. of Liberec, Liberec
fDate :
May 29 2007-June 1 2007
Abstract :
One of the important properties of the SAW transducer is the sensitivity to the external acting quantities. This sensitivity depends both on the strain and relative SAW velocity change due to the external, namely electric fields. The basic equations describing both contributions are presented in the paper. The resulting relative frequency change of the SAW transducer is the result of the strain due to the dimensions changes and the relative SAW velocity change due to the non-linear effects. The configuration of the oriented substrate (may be with domain wall), and the equations describing an influence of the electric field are described. Both the SC-cut quartz-and LiNbO3 substrates are discussed considered in this paper. The principle or new configuration may be used for SAW applications.
Keywords :
electric fields; lithium compounds; quartz; sensitivity; substrates; surface acoustic wave transducers; LiNbO3; SAW transducers; SC-cut quartz; electric fields; non-linear properties; oriented substrate configuration; sensitivity; strain effects; Acoustic sensors; Acoustic waves; Capacitive sensors; Frequency; Mechanical sensors; Nonlinear equations; Piezoelectric materials; Piezoelectric transducers; 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.2007.4319065
