Modeling of Light Airborne High-frequency (HF) Antennas

Report No. ARL-TR-5837
Authors: Christopher S. Kenyon
Date/Pages: December 2011; 28 pages
Abstract: Performance of three lightweight, high-frequency (HF), airborne antenna designs are compared using FEKO method-of-moments modeling software. Of interest were the beam patterns near the ground. All three are upside down with ¼-wave counterpoise wires at the top. The antennas are fed between the base and the counterpoises. Two are ¼-wave monopole antennas while a third is a combination of cross-connected half and ¼-wave coaxial lines. Field strengths reaching the ground at a distance of up to 10 km, with the antennas suspended about four wavelengths above a uniform real ground, were computed.
Distribution: Approved for public release
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Last Update / Reviewed: December 1, 2011