Computer Science – Performance
Scientific paper
Jul 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976itap...24..497s&link_type=abstract
IEEE Transactions on Antennas and Propagation, vol. AP-24, July 1976, p. 497-501.
Computer Science
Performance
2
Antenna Feeds, Cassegrain Antennas, Far Fields, Parabolic Antennas, Polarization Characteristics, Antenna Design, Frequency Assignment, Horn Antennas, Performance Prediction, Satellite Antennas, Satellite Communication, Wave Diffraction, Waveguide Antennas
Scientific paper
Cross polarization and polarization purity are defined for a single polarization antenna, with the definition extended to a double polarization antenna. Formulas are derived for nominal polarization, and the discussion covers aperture plane cross polarization, far-field cross polarization, and diffraction effects degrading cross-polar performance of a well-designed feed-reflector system. The superior performance of Cassegrainian or front-fed paraboloids with respect to polarization purity is closely related to feed design, and a solution is claimed in the controversy surrounding the immunity of these two types of antenna systems against depolarization effects. Comments on waveguides and horns are included. Frequency reuse by means of cross-polarized channels in future satellite communication systems is involved
Delogne P. P.
Safak M.
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