Microwave YIG Switch for Operation at High-Peak Power Levels.

Abstract

The report describes the design, operation, and test results of a J-band absorption modulator-switch that has a power-handling capability of a few watts CW, > 40 kW peak, and a switching time of < 0.001 sec. Reciprocal YIG (yttrium iron garnet) modulators, designed in standard rectangular waveguide and making use of a longitudinal magnetic control field, are generally characterized by a low-insertion loss (< 0.5 dB), a high isolation (> 25 dB) which is nearly independent of magnetic control field in this OFF state, and a matched input impedance (VSWR < 1.5) for all values of applied control field. These electrical characteristics are nearly constant over a 20-percent bandwidth. Other characteristics of these microwave switches include small size (1-3/4 in. long), magnetic control field < 50 oersteds (Oe), operating temperatures exceeding 100C, and a potential switching-time of less than 1 microsec.

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1975
Accession Number
ADA009497

Entities

People

  • Frank Reggia
  • Oscar J. Mead Jr.
  • Ting H. Mak

Organizations

  • Harry Diamond Laboratories

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Absorption
  • Bandwidth
  • Garnet
  • Impedance
  • Insertion Loss
  • J Band
  • Losses
  • Microwaves
  • Modulators
  • Peak Power
  • Power
  • Power Levels
  • Standards
  • Switches
  • Switching
  • Yttrium Iron Garnet

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Microwave Engineering.