A THEORETICAL STUDY OF A LONG DIELECTRIC-COATED CYLINDRICAL ANTENNA

Abstract

By applying the Wiener-Hopf technique, the reflection coefficient of the transmission current at the end of a dielectric-coated antenna can be expressed in a single integral form. This result, when used with the solution of an infinite dielectric-coated cylindrical antenna, yields the input admittance and the current distribution of a long dielectric coated antenna. It is found that unlike the locus of the admittance of a bare cylindrical antenna which converges to a point as the antenna gets longer and longer, the locus of the input admittance of the dielectric-coated antenna becomes a circle. Also, due to the reflection of the transmission current back and forth, a standing wave with surface wave length is formed along the antenna.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1967
Accession Number
AD0647363

Entities

People

  • Chung-yu Ting

Organizations

  • Harvard University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Antennas
  • Boundaries
  • Coefficients
  • Cylindrical Antennas
  • Dielectric Permittivity
  • Electric Fields
  • Generators
  • Integral Equations
  • Integrals
  • Military Research
  • Physics
  • Radiation
  • Standing Wave Ratios
  • Standing Waves
  • Surface Waves
  • Transmission Lines
  • Waves

Fields of Study

  • Engineering
  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering