Title :
P2N-5 Laser-Interferometric Investigation of Double-Resonance SAW Filters
Author :
Holmgren, Olli ; Kokkonen, Kimmo ; Meltaus, Johanna ; Seon Su Hong ; Plessky, Victor P.
Author_Institution :
Helsinki Univ. of Technol., Espoo
Abstract :
Double resonance SAW filters are studied in this paper. The acoustic energy distribution in the filters is measured using a scanning laser interferometer. Line profiles of acoustic power in the longitudinal direction of the device are extracted from the laser-interferometric measurements. The measured profiles are compared with the simulations obtained using the coupling-of-modes model. The measurement results and simulations are in excellent agreement
Keywords :
interdigital transducers; light interferometry; surface acoustic wave filters; ultrasonic transducers; acoustic power line profiles; coupling-of-modes model; double resonance SAW filters; filter acoustic energy distribution; scanning laser interferometry; Acoustic measurements; Electric variables measurement; Fingers; Frequency; Optical interferometry; Optical resonators; Resonance; Resonator filters; SAW filters; Transducers;
Conference_Titel :
Ultrasonics Symposium, 2006. IEEE
Conference_Location :
Vancouver, BC
Print_ISBN :
1-4244-0201-8
Electronic_ISBN :
1051-0117
DOI :
10.1109/ULTSYM.2006.477
