This paper compares the RF performance of a dual-shaped Gregorian reflector system to a classic prime focus symmetric reflector system intended for use in a wideband radio telescope. A number of wideband feeds are considered, including octave band corrugated horns, quad-ridged flared horns, log-periodic dipole antenna feeds, and quasi self-complementary structures. The efficiency, noise temperature and effective area over system temperature (Ae/Tsys) are evaluated. In all cases, the dual-shaped Gregorian system performs significantly better than the prime focus symmetric system.


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    Title :

    Comparison of prime focus and dual reflector antennas for wideband radio telescopes


    Contributors:


    Publication date :

    2012-03-01


    Size :

    1187454 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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