Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/34634
Title: Analysis of the frequency response of SAW filters using finite-difference time-domain method
Authors: Wong, KY
Tam, WY 
Issue Date: 2005
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on microwave theory and techniques, 2005, v. 53, no. 11, p. 3364-3370 How to cite?
Journal: IEEE transactions on microwave theory and techniques 
Abstract: The finite-difference time-domain (FDTD) technique was extended to analyze the frequency response of surface acoustic wave (SAW) filters. In this method, the partial derivatives of quasi-static Maxwell's equations and the equation of motion are discretized to centered finite differences. In addition, the perfectly matched layer boundary condition was applied to reduce spurious reflections. Two structures are considered in this paper. First, the model was applied to analyze the influence of the number of electrodes on the frequency response of a SAW filter fabricated on a zinc oxide (ZnO) substrate. Then, the proposed method was further extended to analyze the frequency response of a ZnO/diamond/Si-layered SAW filter. The simulated results are in a good agreement with the existing experimental data, indicating that the FDTD method was an appropriate approach for modeling SAW devices.
URI: http://hdl.handle.net/10397/34634
ISSN: 0018-9480 (print)
1557-9670 (online)
DOI: 10.1109/TMTT.2005.858385
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