Analysis of the frequency response of SAW filters using finite-difference time-domain method

Author

Wong, K.Y. ; Tam, W.Y.

Author_Institution

Dept. of Electron. & Inf. Eng., Hong Kong Polytech. Univ., China

fYear

2005

fDate

12-17 June 2005

Abstract

The finite-difference time-domain (FDTD) technique is, for the first time, 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 equation of motion are discretized to centered finite-differences. In addition, the perfectly matched layer (PML) boundary condition is applied to reduce the spurious reflections. The model is 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.

Keywords

Maxwell equations; electronic engineering computing; finite difference time-domain analysis; frequency response; surface acoustic wave filters; zinc compounds; FDTD technique; SAW filters; boundary condition; equation of motion; finite-difference time-domain method; frequency response; partial derivatives; perfectly matched layer; quasi-static Maxwell equations; surface acoustic wave filters; Acoustic waves; Finite difference methods; Frequency response; Maxwell equations; Perfectly matched layers; Response surface methodology; SAW filters; Surface acoustic waves; Time domain analysis; Zinc oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2005 IEEE MTT-S International

ISSN

01490-645X

Print_ISBN

0-7803-8845-3

Type

conf

DOI

10.1109/MWSYM.2005.1516588

Filename

1516588