Analysis of bulk wave effect on harmonic admittance of periodic grating

Author

Naumenko, Natalya ; Abbott, Benjamin

Author_Institution

Moscow Steel & Alloys Inst., Russia

Volume

1

fYear

2002

fDate

8-11 Oct. 2002

Firstpage

935

Abstract

We suggest an approximation of the effect of the surface skimming bulk wave (SSBW) on harmonic admittance of periodic grating. The approximation is valid on both sides of cut-off frequency and predicts the existence of surface-bulk hybrid mode (SBH), if such mode occurs in the grating due to SAW/SSBW interaction. As an example, parameters of approximating function were calculated for 36°X, Y+90° cut of quartz with Al grating and plotted versus metalization ratio a/p. They revealed the existence of SBH mode for a/p >0.685. The resonance frequency of additional resonance of harmonic admittance, which corresponds to this mode, was predicted with high accuracy from approximation of harmonic admittance around the cut-off frequency.

Keywords

acoustic resonator filters; acoustic waves; aluminium; multilayers; surface acoustic waves; Al; Al grating; SAW/SSBW interaction; SiO₂; approximation; bulk wave effect; cut-off frequency; harmonic admittance; metalization ratio; periodic grating; quartz; resonance frequency; surface skimming bulk wave; surface-bulk hybrid mode; Acoustic waves; Admittance; Cutoff frequency; Gratings; Harmonic analysis; Iron alloys; Power harmonic filters; Resonance; Steel; Surface acoustic waves;

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.2002.1193549

Filename

1193549