Scattering Matrix Analysis of Surface Acoustic Wave Reflectors and Transducers.

Abstract

The phased periodic array scattering parameters have been modified and corrected for use as a single electrode, mixed units, scattering matrix consisting of one electrical and two acoustic ports. These scattering parameter analytical expressions are functions of material constants, electrode geometry, and frequency. The three port single electrode scattering matrices are acoustically cascaded to produce a three port device scattering matrix which takes into account all finger interactions (acoustic and electric) for the combined effects of piezoelectric and mechanical scattering. The analysis agrees well with experimental measurements of input admittance, electro-acoustic transfer function, and acoustic transmission and reflection coefficients as functions of frequency. Analysis results for the complete modeling of transducers with floating electrodes are also presented. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1980
Accession Number
ADA085764

Entities

People

  • Carl Michael Panasik

Organizations

  • University of Illinois Urbana–Champaign

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Reflection
  • Acoustic Scattering
  • Acoustic Waves
  • Air Force
  • Circuit Analysis
  • Elastic Waves
  • Equivalent Circuits
  • Frequency
  • Frequency Shift
  • Lithium Niobates
  • Materials
  • Piezoceramics
  • Surface Acoustic Waves
  • Surface Waves
  • Transducers
  • Transmission Lines
  • Voltage

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Phased Array Antenna Design.
  • Plasma Physics.