Physics – Optics
Scientific paper
Jun 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ipmap.134..297k&link_type=abstract
IEE Proceedings, Part H - Microwaves, Antennas and Propagation (ISSN 0950-107X), vol. 134, pt. H, no. 3, June 1987, p. 297-302.
Physics
Optics
Antenna Design, Cassegrain Antennas, Reflector Antennas, Sidelobes, Antenna Radiation Patterns, Geometrical Optics, Physical Optics, Radio Telescopes, Signal To Noise Ratios, Subreflectors
Scientific paper
The effect on gain and the first few sidelobes of Cassegrain antennas due to axial feed and subreflector shifts is investigated. The shaped and classical Cassegrain designs are the objects of study, and the motivation is the concern over possible compromise introduced by the maximum G/T(a) design philosophy on a radio telescope antenna. The result of the investigation is a set of general design rules for shaped Cassegrain antennas, based on the examples studied.
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