Accession Number:

AD0737724

Title:

Summary of Measurements and Modeling of the Radiation Patterns of Simple HF Field Antennas in Open (Level) Terrain, Mountains, and Forests

Descriptive Note:

Special technicl rept. no. 45

Corporate Author:

STANFORD RESEARCH INST MENLO PARK CA

Personal Author(s):

Report Date:

1971-12-01

Pagination or Media Count:

236.0

Abstract:

Full-scale measurements of the radiation patterns of simple HF field-expedient antennas dipoles, monopoles, inverted Ls, and slant wires were conducted while the antennas were situated over open level terrain, in a U.S. pine forest, in a tropical forest in Thailand, and under another contract in hilly terrain. The major results from these measurements are summarized and examples of the measured data are presented in the report. A computer model of a short dipole antenna in a homogeneous, isotropic forest medium was developed and the calculated results are compared with measured data from short and half-wave resonant dipoles.

Subject Categories:

  • Electrical and Electronic Equipment
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE