Properties of radio frequency Rayleigh waves on langasite at elevated temperatures

Author

Fachberger, R. ; Bruckner, G. ; Hauser, R. ; Biniasch, J. ; Reindl, L. ; Ruppel, C.

Author_Institution

Carinthian Tech Res., Villach, Austria

Volume

2

fYear

2004

fDate

23-27 Aug. 2004

Firstpage

1223

Abstract

The properties of Rayleigh waves operating both at radio frequency (RF) and at high temperatures (HT) on langasite crystal cuts with Euler angles of (0°, 138.5°, 26.6°) and (0°, 30.1°, 26.6°) are investigated. By evaluating the frequency response of surface acoustic wave (SAW) test devices the SAW velocity, the coupling factor, and the propagation attenuation have been determined experimentally in a temperature range from 20°C to 500°C. The SAW devices could be operated up to frequencies of 3 GHz. However, considering a future sensor application a limiting factor is a strong increase of the acoustic losses in conjunction with frequency and temperature.

Keywords

Rayleigh waves; acoustic wave propagation; frequency response; surface acoustic wave devices; 20 to 500 degC; Euler angles; RF waves; SAW test devices; SAW velocity; acoustic losses; coupling factor; elevated temperatures; frequency response; langasite crystal cuts; propagation attenuation; radio frequency Rayleigh waves; sensor application; surface acoustic wave test devices; Acoustic propagation; Acoustic testing; Acoustic waves; Attenuation; Frequency response; Radio frequency; Response surface methodology; Surface acoustic wave devices; Surface acoustic waves; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2004 IEEE

ISSN

1051-0117

Print_ISBN

0-7803-8412-1

Type

conf

DOI

10.1109/ULTSYM.2004.1418008

Filename

1418008