Acoustic-field distribution within a fan-shaped filter

Author

Dufilie, Pierre ; Kopp, Laurent ; Knuuttila, Jouni V. ; Vartiainen, Juha ; Salomaa, Martti M.

Author_Institution

Thales Components, Vernon, CT, USA

Volume

1

fYear

2001

fDate

2001

Firstpage

41

Abstract

We have investigated the surface-acoustic wave field variation in a fan-shaped filter on a 112° LiTaO₃ substrate as a function of position and frequency. The acoustic field has been measured with the help of a scanning laser interferometer and the SAW-field distribution in the complete filter has also been numerically simulated in detail. Our modelling scheme utilizes a discretization of the filter into elementary cells. The simulations serve to render features of the acoustic-field distribution in astonishing quantitative agreement with the laser-interferometric detections

Keywords

acoustic field; light interferometry; lithium compounds; surface acoustic wave filters; LiTaO₃; LiTaO₃ substrate; SAW device; acoustic field distribution; fan-shaped filter; numerical simulation; scanning laser interferometry; Acoustic measurements; Acoustic transducers; Filters; Frequency; Laser modes; Passband; Physics; Piezoelectric transducers; Surface acoustic wave devices; Surface acoustic waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2001 IEEE

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-7177-1

Type

conf

DOI

10.1109/ULTSYM.2001.991574

Filename

991574