Analysis of frequency response of a dispersive layered SAW filter using effective permittivity and coupling of modes model

Author

Wu, T.T. ; Chen, Y.Y. ; Chou, T.T.

Author_Institution

Inst. of Appl. Mech., Nat. Taiwan Univ., Taipei, Taiwan

Volume

1

fYear

2002

fDate

8-11 Oct. 2002

Firstpage

271

Abstract

This paper is an extension of the work by Wu and Chen (IEEE UFFC, 49 (1), 142, 2002) in which the COM model and the effective permittivity have been adopted to model the frequency response of a layered SAW filter. Matrix formalism for calculating the effective permittivity of a layered piezoelectric medium with IDT buried inside was given first. Summary of the COM model for uniform IDT was presented. Necessary modifications were made to analyze the frequency response of a two-port 1.48 GHz ZnO/Diamond layered SAW filter. The result was in accordance with the existing experimental data in the literature.

Keywords

II-VI semiconductors; diamond; frequency response; permittivity; piezoelectric semiconductors; surface acoustic wave filters; zinc compounds; 1.48 GHz; COM model; ZnO-C; coupling of modes model; dispersive layered SAW filter; effective permittivity; frequency response; layered piezoelectric medium; two-port 1.48 GHz ZnO/diamond layered SAW filter; Bandwidth; Dispersion; Electrodes; Frequency response; Permittivity; SAW filters; Surface acoustic wave devices; Surface acoustic waves; Transducers; Zinc oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE

ISSN

1051-0117

Print_ISBN

0-7803-7582-3

Type

conf

DOI

10.1109/ULTSYM.2002.1193400

Filename

1193400