Title :
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
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;
Conference_Titel :
Microwave Symposium Digest, 2005 IEEE MTT-S International
Print_ISBN :
0-7803-8845-3
DOI :
10.1109/MWSYM.2005.1516588
