Performance Limits of a Dual-Acoustic-Channel Surface-Acoustic-Wave (SAW) Interferometer.

Abstract

Design, construction, and performance of a dual-acoustic-channel interferometer, capable of placing nulls spaced every 150 kHz from 329.15 to 335 MHz, are described. The prototype device constructed exhibited a minimum null depth for 40 consecutive nulls of 33 dB, with more than half the nulls being 45 dB or more. Midband insertion loss was 27 dB. Second-order effects, such as spurious signals, required some design tradeoffs. Slight modifications of the prototype should enable 50 dB nulls to be achieved with an insertion loss of 20 dB. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 19, 1977
Accession Number
ADA039636

Entities

People

  • C. Banks
  • D. C. Webb
  • M. Finnley

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Acoustic Channels
  • Acoustic Waves
  • Artificial Satellites
  • Attenuation
  • Capacitance
  • Delay Lines
  • Energy Bands
  • Frequency
  • Frequency Bands
  • Global Positioning Systems
  • Impedance
  • Insertion Loss
  • Navigation
  • Satellite Navigation Systems
  • Scattering
  • Surface Acoustic Waves
  • Transducers

Fields of Study

  • Physics

Readers

  • Microwave Engineering.
  • Radar Systems Engineering.
  • STEM Education

Technology Areas

  • Space