Study of a feed cluster for the Gregorian dual-reflector feed of the Arecibo radio telescope

Author

Kildal, P.-S. ; Johansson, M. ; Hagfors, T. ; Giovanelli, R.

Author_Institution

Chalmers Univ. of Technol., Gothenburg, Sweden

fYear

1992

fDate

18-25 June 1992

Firstpage

24

Abstract

It is shown that a hexagonal seven-element cluster of dual-mode horn antennas can be used in the Gregorian dual-reflector feed of the Arecibo telescope, to provide seven beams of sufficient quality at 1.42 GHz for many radio-astronomy purposes. Better performance is available at higher frequencies. The cluster feed study has been carried out using geometrical-optics ray tracing, i.e., the TRT code. The TRT results have been verified against physical-optics integration at 1 GHz.<>

Keywords

antenna feeders; horn antennas; radiotelescopes; ray tracing; reflector antennas; 1.42 GHz; Arecibo radio telescope; Gregorian dual-reflector feed; UHF; dual-mode horn antennas; feed cluster; geometrical-optics ray tracing; hexagonal seven-element cluster; performance; Apertures; Feeds; Frequency; Geometrical optics; Geometry; Radio astronomy; Shape; Space technology; Supercomputers; Telescopes;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE

Conference_Location

Chicago, IL, USA

Print_ISBN

0-7803-0730-5

Type

conf

DOI

10.1109/APS.1992.222015

Filename

222015