Title :
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
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;
Conference_Titel :
Ultrasonics Symposium, 1996. Proceedings., 1996 IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-3615-1
DOI :
10.1109/ULTSYM.1996.583771
