NEC4 Analysis of a Navy VLF Antenna

Abstract

This paper describes the NEC4 analysis used to evaluate proposed modifications to a Navy VLF top-loaded monopole. Charge densities are computed and used to calculate the maximum top-load gradient for two wire sizes. Although the antenna is electrically small, a large number of segments is needed to obtain the desired resolution in the charge data. Gradient values derived from the NEC4 data are shown to be in close agreement with those derived from measured data. The gradient values show that the proposed configuration does not meet the maximum gradient design limit for this antenna. Antennas, Measurement, Communications, Very low frequency, Low frequency, High voltage.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1994
Accession Number
ADA279340

Entities

People

  • C. A. Deneris
  • J. C. Logan
  • J. H. Schukantz
  • P. M. Hansen

Organizations

  • Naval Command, Control and Ocean Surveillance Center

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Antenna Configurations
  • Charge Density
  • Computers
  • Data Sets
  • Diameters
  • Electric Fields
  • Frequency
  • Geometry
  • Guy Wires
  • High Voltage
  • Measurement
  • Models
  • Ocean Surveillance
  • Very Low Frequency
  • Voltage
  • Wire

Fields of Study

  • Physics

Readers

  • Approximation Theory.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering