Effects of gaps among panels in radio astronomy reflector antennas.

Details Effects of gaps among panels in radio astronomy reflector antennas. Effects of gaps among panels in radio astronomy reflector antennas.

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998acesj..13...52p&link_type=abstract

Appl. Comput. Electromagn. Soc. J., Vol. 13, No. 1, p. 52 - 57

Astronomy and Astrophysics

Astronomy

Antennas: Radio Astronomy

Scientific paper

The main reflector of antennas used for radio astronomy consists of hundreds of panels among which, for various reasons, small gaps are left. The effects of these gaps on the field scattered by the reflector are analyzed by means of an hybrid numerical technique which combines the finite element method (FEM) and the method of moments (MoM). Numerical results pertaining to the case of an incident plane wave are presented, and the effects of the introduction of corrugations inside the gaps to minimize the power flowing through the gaps themselves are discussed.

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