Transmission-Line Analogs for Piezoelectric Layered Structures.
Abstract
This report comprises a doctoral dissertation in electrophysics at the Polytechnic Institute of Brooklyn, Brooklyn, NY 11201, June 1972. This study derives exact equivalent network representations for the electromechanical behavior of crystal stacks that are piezoelectrically driven in thickness modes of vibration. The stacked structure may consist of any number of layers; each layer consists of a homogeneous, but arbitrarily anisotropic crystal medium. The analysis shows that each layer is represented by three acoustic transmission lines; in general, these lines possess unequal characteristic immittances and propagation wavenumbers. At the interface between any two layers, the six transmission lines (three from each side) are interconnected by transformer elements. The circuit descriptions obtained constitute a first rigorous representation for the canonical cases of thickness- and lateral-field excitation of the three thickness modes of vibration of crystals with arbitrary anisotropy. The circuits have been realized in such a fashion that the overall result for a multi-layered structure is built up by the simple interconnection of basic blocks of identical form, with each block accounting for the behavior of one layer. An example demonstrates the application of these networks to the development of actual devices and illustrates the systematic, efficient and practical aspects of the network characterization developed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1976
- Accession Number
- ADA044174
Entities
People
- Arthur D. Ballato
Organizations
- United States Army Communications-Electronics Command