A ZnO/silicon Lamb wave filter using phononic crystals

Author

Sun, Jia-Hong ; Lan, Chih-Wei ; Kuo, Chen-Yu ; Wu, Tsung-Tsong

Author_Institution

Dept. of Mech. Eng., Chang Gung Univ., Taoyuan, Taiwan

fYear

2012

fDate

21-24 May 2012

Firstpage

1

Lastpage

4

Abstract

This paper presents numerical and experimental studies on a ladder-type Lamb wave filter using phononic crystal gratings. The ladder-type filter was constructed by introducing two line defects as resonant cavities in a silicon-based phononic crystal plate. In this study, the resonant cavities utilizing phononic crystals were analyzed and designed by finite element method. The experimental results demonstrate that a 1-stage ladder-type filter shows the -24 dB insertion loss, 28 dB out-of-band rejection and 0.11 MHz (0.07%) 3dB bandwidth at 159 MHz.

Keywords

Bragg gratings; II-VI semiconductors; finite element analysis; photonic crystals; surface acoustic wave filters; wide band gap semiconductors; zinc compounds; ZnO-Si; bandwidth 0.11 MHz; bandwidth 159 MHz; experimental studies; finite element method; insertion loss; ladder-type Lamb wave filter; numerical studies; out-of-band rejection; phononic crystal gratings; phononic crystals; resonant cavities; silicon-based phononic crystal plate; Band pass filters; Cavity resonators; Crystals; Gratings; Resonant frequency; Resonator filters; Silicon;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium (FCS), 2012 IEEE International

Conference_Location

Baltimore, MD

ISSN

1075-6787

Print_ISBN

978-1-4577-1821-2

Type

conf

DOI

10.1109/FCS.2012.6243611

Filename

6243611