Investigations on the power tolerance of ladder impedance-element SAW filters

Author

Laine, Juha-Pekka ; Plessky, Victor P. ; Salomaa, Martti M.

Author_Institution

Micronas Semicond. SA, Bevaix, Switzerland

Volume

1

fYear

1996

fDate

3-6 Nov 1996

Firstpage

15

Abstract

The filter damage induced by high-intensity SAW and large electrode currents is studied. A model based on the coupling-of-modes formalism is developed to represent the dissipation of power in the resistive-part impedance of the impedance elements in the filter. The model is employed to find the peak-absorption frequencies and possible failure-node impedance elements for various ladder-filter designs, including two-and-a-half-, three-, and four-section structures. Other effects were also evaluated within the model, such as bulk-wave generation levels, voltage fluctuations and current peaks in the filter network

Keywords

UHF filters; coupled mode analysis; failure analysis; ladder filters; surface acoustic wave filters; tolerance analysis; bulk-wave generation levels; coupling-of-modes formalism; current peaks; failure-node impedance elements; filter damage; four-section structures; high-intensity SAW; ladder impedance-element SAW filters; ladder-filter designs; large electrode currents; model; peak-absorption frequencies; power dissipation; power tolerance; resistive-part impedance; three-section structures; two-and-a-half-section structures; voltage fluctuations; Absorption; Electrodes; Impedance; Optical resonators; Physics; Radio frequency; Resonator filters; SAW filters; Surface acoustic wave devices; Surface acoustic waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1996. Proceedings., 1996 IEEE

Conference_Location

San Antonio, TX

ISSN

1051-0117

Print_ISBN

0-7803-3615-1

Type

conf

DOI

10.1109/ULTSYM.1996.583771

Filename

583771