Development of Circuit Models for SAW Resonators.

Abstract

Three approaches for calculating the surface acoustic wave (SAW) velocity in the periodic reflector array of a SAW resonator have been undertaken. A theoretical model of the velocity in the array could be used to improve existing resonator models and thus to improve device performance. All three approaches involve approximate theoretical calculations. The first two approaches--a variational method and a perturbation theory--were not sufficiently accurate in their simplest implementation. More accurate field approximations than those previously available are needed to give the required accuracy. A finite element calculation aimed at obtaining better field estimates has been completed. The only step remaining when the contract terminated was the utilization of the more accurate field approximations obtained by the finite element method in an improved perturbation calculation. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1978
Accession Number
ADA055280

Entities

People

  • Robert S. Wagers
  • William R. Shreve

Organizations

  • Texas Instruments

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Acoustic Waves
  • Boundaries
  • Contracts
  • Equations
  • Finite Element Analysis
  • Frequency
  • Geometry
  • Materials
  • Perturbations
  • Rayleigh Waves
  • Security
  • Stresses
  • Surface Acoustic Wave Devices
  • Surface Acoustic Waves
  • Surface Waves
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Microwave Engineering.