ON ANTENNA IMPEDANCES IN A COLD PLASMA WITH A PERPENDICULAR STATIC MAGNETIC FIELD.

Abstract

A flat strip antenna is embedded in a magnetoionic medium with its longitudinal axis perpendicular to the static magnetic field. The antenna characteristics differ for antennas oriented with their surfaces parallel and perpendicular to the static magnetic field. In the former case there are no resistance peaks for frequencies near the plasma frequency and the reactance of a short antenna is capacitive for low frequencies. For frequencies near the gyrofrequency, the antennas are electrically longer for the parallel orientation of their surfaces. The accuracy of the solutions is illustrated by computing the tangential electric surface fields that are excited by the approximate current distributions used in the impedance computations. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 28, 1968
Accession Number
AD0681149

Entities

People

  • Janis Galejs

Organizations

  • Sylvania Electric Products

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Accuracy
  • Computations
  • Frequency
  • Impedance
  • Magnetic Fields
  • Orientation (Direction)
  • Parallel Orientation
  • Reactance
  • Resistance

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Plasma Physics / Magnetohydrodynamics