ANTENNA AND RADIO WAVE PROPAGATION CHARACTERISTICS AT VHF NEAR AND IN THE GROUND

Abstract

The effects of a finitely conducting earth on the field attenuation and on the radiation impedance and radiation pattern of a half wave dipole antenna in and near the earth are investigated and reported. The measurements were made at two frequencies, f = 93.7 Mc/s and 179.5 Mc/s. The signals were horizontally polarized and measurements were made for antenna heights varying in 0.1 wavelength increments from one wavelength above ground to about 0.3 wavelength below ground. Excellent agreement between theory and measurements was found in all but one case.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 30, 1963
Accession Number
AD0414347

Entities

People

  • A. H. Lagrone
  • D. M. Schwartz

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Contracts
  • Electromagnetic Fields
  • Electromagnetic Wave Propagation
  • Engineering
  • Frequency
  • Ground Level
  • New Mexico
  • New York
  • Physics Laboratories
  • Radiation
  • Radiation Patterns
  • Radio Waves
  • Standards
  • Standing Waves
  • Transmission Lines
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Microwave Engineering.