Tuesday, 12 October 2004 - 1:00 PM

This presentation is part of : Active Materials

A Two-dimensional Analysis of Surface Acoustic Wave Resonators with Considerations of Electrodes (keynote lecture)

Ji Wang and Jingbo Lin. School of Engineering, Ningbo University, 1211 Zhenning Xilu Road, Ningbo, Zhejiang, 315211, China

Surface acoustic wave analyses in finite solids are of practical importance in surface acoustic wave (SAW) resonator design, but analytical solutions based on a two-dimensional theory similar to the bulk acoustic waves for finite plates are only obtained recently. By including the familiar interdigital transducers as typical electrodes of SAW resonators, the two-dimensional equations are further modified through the expansion parameters particular to the approximate theory. Then electrodes and the finite substrate are considered as a periodic structure requiring the coupled two-dimensional differential equations satisfying related boundary conditions. Equations and solutions of a typical SAW resonator model are obtained with a general procedure for the periodic problem with a numerical example, and applications of the equations and results are discussed.

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