ELECTROACOUSTIC DELAY LINES FOR MICROWAVE FREQUENCIES,

Abstract

The paper describes techniques for the generation and propagation of elastic waves in the frequency range 1 to 3 GHz. These techniques include the design, fabrication, and evaluation of microwave acoustic delay lines consisting of highly oriented electroacoustic CdS transducers vacuum deposited on single-crystal sapphire propagating media. Typical electrical characteristics at 2 GHz of these thin-film (approximately one micron) transducers and delay media combination, in both coaxial and strip transmission lines, include delay of 6 microsec, insertion loss less than 40 dB, input VSWR less than 2.0 over a 20-percent bandwidth and operating temperature from -74 to +96C. Acoustic propagation velocity, power handling capabilities, and impedance matching techniques used with these electroacoustic delay lines are also discussed. (Author)

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1968
Accession Number
AD0671689

Entities

People

  • Frank Reggia
  • Ting H. Mak

Organizations

  • Harry Diamond Laboratories

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Delay Lines
  • Acoustic Propagation
  • Bandwidth
  • Delay Lines
  • Elastic Waves
  • Frequency
  • Insertion Loss
  • Microwave Frequency
  • Microwaves
  • Single Crystals
  • Strip Transmission Lines
  • Thin Films
  • Transducers
  • Transmission Lines
  • Waves

Fields of Study

  • Physics

Readers

  • Microwave Engineering.