Computer Science
Scientific paper
Oct 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976arelu..30..409k&link_type=abstract
Archiv für Elektronik und Uebertragungstechnik, vol. 30, Oct. 1976, p. 409-412. In German.
Computer Science
Antenna Radiation Patterns, Far Fields, Radio Telescopes, Support Interference, Two Reflector Antennas, Apertures, Parabolic Reflectors, Scalars
Scientific paper
The subreflector and the supporting legs have a pronounced effect on the antenna characteristics in dual reflector systems. Approximate calculations are based on the zero-field concept which assumes a complete absorption of the received power by the subreflector and its supports. A description is given of an investigation in which the distant field near the axis of a circular aperture is computed and compared with measured data. The investigation makes use of the zero-field concept. The representation of the structural shadows is more accurate than in earlier studies.
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