Modal Analysis of SAW Convolver

Abstract

The gap-coupled acoustoelectric convolver developed at Lincoln Laboratory is a surface-acoustic-wave (SAW) device consisting of a LiNbO3 delay line and a silicon strip supported on a series of spacer rails (or posts) which have been ion-beam etched into the LiNbO3 surface. The silicon/air-gap/LiNbO3 structure forms an over-moded acoustic waveguide. A theoretical model has been developed which analyzes the perturbing effect of rails and predicts the mode structure and beating phenomena between modes. The scattering by support posts is also analyzed.

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Document Details

Document Type
Technical Report
Publication Date
Jan 13, 1978
Accession Number
ADA056809

Entities

People

  • Karl L. Wang

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acoustic Fields
  • Acoustic Waveguides
  • Acoustic Waves
  • Doppler Effect
  • Frequency
  • Frequency Response
  • Geometry
  • Ions
  • Radiation
  • Rayleigh Waves
  • Scattering
  • Surface Acoustic Wave Devices
  • Surface Acoustic Waves
  • Surface Waves
  • Transducers
  • Transmission Lines
  • Waves

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Microwave Engineering.