Acoustic-Field Distribution Within A Fan-Shaped Filter
2001 IEEE ULTRASONICS SYMPOSIUM PROCEEDINGS, VOLS 1 AND 2(2001)
摘要
We have investigated the surfaceacoustic wave field variation in a fan-shaped filter on a 112degrees 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.
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关键词
surface acoustic wave devices,surface acoustic wave,numerical simulation,physics,frequency,passband
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