Title :
Design of STW resonators on langasite using experimentally determined COM parameters
Author :
Mitrofanov, I.S. ; Perevalov, A.V. ; Bigler, E.
Author_Institution :
Avangard-Elionica Co., St. Petersburg, Russia
Abstract :
This paper presents the design of the Surface Transverse Wave (STW) resonators on langasite. The empirical values of coupling-of-modes (COM) parameters are shown, and a comparison between the theoretical resonator responses computed with these values and measured responses is performed. The resonance and antiresonance frequencies are evaluated as a function of the thickness of metal electrodes. Results for STW resonator response on langasite exhibit very important differences with respect to similar STW devices built on ST and AT quartz. Finally, temperature sensitivity of the STW langasite resonators has been measured and compared to theoretical predictions based on various sets of published material constants
Keywords :
electron device testing; equivalent circuits; lanthanum compounds; piezoelectric materials; surface acoustic wave resonators; AT quartz; COM parameters; LaGaSiO; ST quartz; STW resonators; Surface Transverse Wave resonators; antiresonance frequencies; coupling-of-modes parameters; frequency response; langasite; measured responses; metal electrodes; metallisation; resonance frequencies; resonator responses; temperature sensitivity; thickness; Acoustic materials; Aluminum; Arrayed waveguide gratings; Dielectric constant; Dielectric substrates; Geometry; Metallization; Mirrors; Resonance; System testing;
Conference_Titel :
Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European
Conference_Location :
Besancon
Print_ISBN :
0-7803-5400-1
DOI :
10.1109/FREQ.1999.841444
