Performance degradation due to wind deflection of billboard antennas

Details Performance degradation due to wind deflection of billboard antennas Performance degradation due to wind deflection of billboard antennas

Sep 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975marrv..38..105m&link_type=abstract

Marconi Review, vol. 38, 3rd Quarter, 1975, p. 105-137.

Computer Science

Performance

Antenna Design, Horn Antennas, Microwave Antennas, Parabolic Reflectors, Tropospheric Scattering, Wind Effects, Gust Loads, Performance Prediction, Transhorizon Radio Propagation

Scientific paper

The mechanical design criteria for large tropospheric scatter billboard antennas are outlined and the electrical performance degradation due to wind deflection of the reflector surface and of the feed horn mount are discussed. The results of a rigorous analysis of the Marconi 18 meter tropospheric scatter antenna type RA.2050 are reviewed, and the system degradation due to wind loading when the antenna is operating at 2.52 GHz is presented in terms of loss in peak gain and beam deflection loss. An approximate expression for loss in gain due to wind perturbation is developed for use in cases where complete design information on an antenna is not available.

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