Accession Number : AD0864436

Title :   Transmission Line Techniques for Description of Microwave Acoustic Resonances in Thin Piezoelectric Disks.

Descriptive Note : Physical sciences research papers,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA

Personal Author(s) : Slobodnik, Andrew J., Jr

Report Date : NOV 1969

Pagination or Media Count : 27

Abstract : Standard transmission line theory and techniques are used to develop a quantitative description of microwave acoustic resonances in thin piezoelectric disks. An equivalent circuit is derived from basic electromagnetic and acoustic principles for the vibration of such a disk in the gap of a reentrant cavity. The elements of this circuit are given in terms of physical parameters of the disk and cavity. Experimental results confirming the theory are also presented including observation of S-band resonances in X-cut, Y-cut, AC-cut and BC-cut quartz and Z-cut LiNbO3. By using the theoretical model to relate these results back to fundamental quantities, an estimate of the acoustic attenuation is obtained for the various crystal cuts. (Author)

Descriptors :   (*PIEZOELECTRIC CRYSTALS, S BAND), (*RESONATORS, ELECTRICAL NETWORKS), TRANSMISSION LINES, CRYSTAL OSCILLATORS, LITHIUM COMPOUNDS, NIOBATES.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE