Computer Science – Performance
Scientific paper
May 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975itap...23..323c&link_type=abstract
IEEE Transactions on Antennas and Propagation, vol. AP-23, May 1975, p. 323-328. Research supported by the Science Research Cou
Computer Science
Performance
1
Antenna Radiation Patterns, Cassegrain Antennas, Error Correcting Devices, Instrument Compensation, Microwave Antennas, Parabolic Reflectors, Antenna Design, Bandwidth, Mirrors, Power Gain, Sidelobe Reduction, Surface Geometry
Scientific paper
Reflector antennas are usually performance limited by surface error effects as operating frequencies become higher. An investigation is conducted of the possibility to improve the performance of parabolic reflectors by adjusting the surface profile of a Cassegrain secondary mirror. The adjustment is to compensate for those errors in the main reflector which have correlation lengths substantially greater than the operating wavelength. In the investigation reported the performance of two local plane paraboloids 2.8 m in diameter designed originally for use at frequencies less than 7 GHz has been studied at frequencies in the range from 28 to 40 GHz.
Cowles P. R.
Parker Alison E.
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