Feasibility Study of Radar-Transmitting Materials.

Abstract

It is shown that it is unlikely that the principles that were originally identified for investigation in this study can be used to obtain a practical material having high microwave transmittance. Electron plasmas in solids are too highly damped at room temperature to give high transmittance. Low-frequency phonon modes conceivably could have frequencies in the microwave region, but the frequency at which the refractive index is equal to one would still be in the infrared region, not the microwave region. After the research on the program was completed, it was suggested that the possibility of attaining high microwave transmittance in ionic conductors should be considered. Although there was no time for such a study, a brief investigation indicated that some ionic conductors possibly could be able to provide high microwave transmittance. They should be studied further. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 15, 1985
Accession Number
ADA155839

Entities

People

  • M. Sparks

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Conductivity
  • Crystal Lattice Vibrations
  • Cubic Lattices
  • Dielectric Permittivity
  • Electron Holes
  • Electrons
  • Energy Bands
  • Frequency
  • Materials
  • Millimeter Waves
  • Mobility
  • Optical Properties
  • Phonons
  • Reflectance
  • Refractive Index
  • Resonant Frequency
  • Solid State Physics

Readers

  • Materials Science and Engineering.
  • Microwave Engineering.
  • Systems Analysis and Design

Technology Areas

  • Microelectronics