Microwave Network Synthesis

Abstract

The results of a theoretical and experimental study of the grating transducer are presented. The results clearly demonstrate that such a structure can couple effectively to surface acoustic waves. However the study has revealed two problem areas: (1) It is difficult to prevent the parasitic capacitance to ground from dominating the electrical behavior of such transducers, and (2) the electric fields that 'jump over' between nonadjacent electrodes can couple to surface waves (and bulk waves) and therefore must be taken into account in a transducer design. A possible method for improving the transducer design is discussed. A compact channel-dropping-filter geometry consisting of hairpin bandpass and folded-line bandstop filters is proposed for stripline and MIC (microwave integrated circuits). Design details and theoretical and experimental data for a trial channel-dropping filter are presented.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1972
Accession Number
AD0751746

Entities

People

  • Alfred J. Bahr
  • Edward G. Cristal
  • Robert E. Lee

Organizations

  • SRI International

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Waves
  • Bandstop Filters
  • Capacitance
  • Electric Fields
  • Filters
  • Frequency
  • Geometry
  • Impedance
  • Lepidoptera
  • Measurement
  • Networks
  • Strip Transmission Lines
  • Surface Acoustic Wave Devices
  • Surface Acoustic Waves
  • Surface Waves
  • Test Fixtures
  • Transmission Lines

Readers

  • Microwave Engineering.