TRANSMISSION MODE UHF MAGNETO-ACOUSTIC DELAY LINE,

Abstract

The paper reports the investigation of a magnetoacoustic delay line, in which both spin waves and acoustic waves are used to accomplish the delay. The material used was a single crystal rod of yttrium iron garnet, with the rod serving both as the transducer and delay medium. CONCLUSIONS: Data has been presented on both a slow and fast variation of insertion loss covering the frequency range of 200 to 1,000 mc. The fast variation is due to interference effects between the main pulse and a secondary pulse which is generated by reflection due to 'mismatch at the turning point. The fast variation has been shown to occur only over a portion of the pulse and may be absent if the pulse is sufficiently short. The use of auxiliary magnets which generate a non-uniform field perpendicular to the main field along the rod axis reduces insertion loss, reduces or eliminates the fast variation, and thus reduces distortion in long pulses. Also the bonding together of two YIG rods for obtaining longer delays was shown to be feasible at these frequencies. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1966
Accession Number
AD0634640

Entities

People

  • Emanuel Gikow
  • Isidore Bady
  • Robert Sproat
  • William Skudera

Organizations

  • United States Army Communications-Electronics Command

Tags

DTIC Thesaurus Topics

  • Acoustic Delay Lines
  • Acoustic Waves
  • Delay Lines
  • Frequency
  • Insertion Loss
  • Losses
  • Materials
  • Single Crystals
  • Spin Waves
  • United States Military Academy
  • Waves
  • Yttrium Iron Garnet

Fields of Study

  • Physics

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Materials Science and Engineering.
  • Plasma Physics / Magnetohydrodynamics