HIGH POWER VLF HORIZONTAL DIPOLE TRANSMITTING ANTENNA

Abstract

A study was made of the use of the horizontal dipole as a VLF transmitting antenna. Two types of multiconductor-loaded dipoles are considered: (1) an off-center-fed dipole one wavelength long, with wave velocity compensation; and (2) a center-fed dipole about 0.2 wavelength long, end-loaded with unterminated radials. Theoretical equations are derived to determine the efficiency, beamwidth, bandwidth, maximum power radiating capability, and maximum antenna voltages, over a frequency range of 10-20 kHz and an earth conductivity range of 0.001 to 0.0001 mho/meter. Measurements made on a 6-km experimental antenna constructed in Hawaii confirm the equations for radiation efficiency and bandwidth.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1968
Accession Number
AD0834967

Entities

People

  • E. W. Seeley
  • W. K. Moision

Organizations

  • Naval Air Weapons Station China Lake

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Antennas
  • Bandwidth
  • California
  • Capacitance
  • Communication Systems
  • Dipole Antennas
  • Electronics
  • Export Controls
  • Frequency
  • Frequency Bands
  • Impedance
  • Measurement
  • Navy
  • Radiation
  • Radiation Patterns
  • Resonant Frequency
  • Transmitting

Fields of Study

  • Engineering
  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering