The V-dipole pair as a feed for deep parabolic reflectors

Details The V-dipole pair as a feed for deep parabolic reflectors The V-dipole pair as a feed for deep parabolic reflectors

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978freq...32..200w&link_type=abstract

Frequenz, vol. 32, July 1978, p. 200-204. In German.

Astronomy and Astrophysics

Astronomy

Antenna Feeds, Dipole Antennas, Parabolic Reflectors, Radio Telescopes, Antenna Design, Apertures, Directional Antennas, Frequency Ranges, Radio Astronomy

Scientific paper

A description is presented of a primary-focus antenna feed which was developed for the 100-m radio telescope in Effelsberg, Germany. The antenna feed makes use of two parallel V-dipoles and a reflector plate. Its operational range is the 1 GHz frequency region. The V-dipole feed, when compared with a radiating element including two elongated dipoles, has an additional geometric parameter for influencing the directional characteristics. It is possible to obtain with the aid of the V-angle for the described feed nearly equal directional diagrams for the E and H planes. The cylindrical symmetry of the measured major lobe of the radio telescope is satisfactory. It was, however, not possible to obtain the symmetry expected on the basis of the measured feed directional diagrams.

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