Title :
Laser interferometric analysis of a ISM band SAW duplexer
Author :
Knuuttila, J.V. ; Tikka, P. ; Plessky, V.P. ; Thorvaldsson, T. ; Salomaa, M.M.
Author_Institution :
Lab. of Mater. Phys., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
Direct measurements on the surface-acoustic wave field in an ISM band SAW duplexer have been performed with a scanning laser-interferometric prober. New acoustic loss mechanisms, featuring unexpected spatial distribution of acoustic amplitude, were revealed by the measurements and linked to the measured electrical response.
Keywords :
UHF filters; land mobile radio; light interferometers; measurement by laser beam; multiplexing equipment; surface acoustic wave resonator filters; ISM band SAW duplexer; acoustic amplitude; acoustic loss mechanism; electrical response; laser interferometric analysis; scanning laser-interferometric probe; spatial distribution; surface-acoustic wave field; Acoustic measurements; Acoustic waves; Impedance; Optical filters; Optical interferometry; Optical resonators; Optical surface waves; Resonator filters; Surface acoustic wave devices; Surface acoustic waves;
Conference_Titel :
Microwave Symposium Digest, 1999 IEEE MTT-S International
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
0-7803-5135-5
DOI :
10.1109/MWSYM.1999.780222
