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Faster antenna noise temperature calculations using a novel approximation technique

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dc.contributor.author Imbriale, William A.
dc.date.accessioned 2014-09-26T21:39:55Z
dc.date.available 2014-09-26T21:39:55Z
dc.date.issued 2010-07-11
dc.identifier.citation 2010 IEEE International Symposium on Antennas and Propagation, Toronto, Ontario, July 11-17, 2010 en_US
dc.identifier.clearanceno 10-0162
dc.identifier.uri http://hdl.handle.net/2014/44784
dc.description.abstract In order to properly tradeoff the various antenna and feed configurations for the Square Kilometre Array (SKA) optical design it is necessary to evaluate the gain and noise temperature of each configuration over a wide range of frequencies. German Cortes describes the standard technique for computing antenna noise temperature. However, since the total antenna pattern needs to be calculated over the entire 4 pi steradians at a fine enough resolution to accurately include the main beam, the computer time required is enormous. Even at modest frequencies and reflector sizes (~5 to 10 GHz for a 12 meter main reflector) the technique can take days on a single node of a supercomputer. Utilizing the standard technique to compute the noise temperature for all the cases required to properly characterize the SKA design is clearly not feasible. At least a 100 to 1000 speedup in the computation time is required. This paper describes an approximation technique that can accomplish this improvement with extremely small errors in noise temperature calculation of a few tenths of Kelvin. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2010 en_US
dc.subject Reflector Antennas en_US
dc.title Faster antenna noise temperature calculations using a novel approximation technique en_US
dc.type Preprint en_US


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