DocumentCode :
3673093
Title :
Accuracy improvement of approximate noise temperature calculations of offset Gregorian reflector systems
Author :
R. Lehmensiek;D. I. L. de Villiers
Author_Institution :
EMSS Antennas (Pty) Ltd., Stellenbosch, 7600, South Africa
fYear :
2015
Firstpage :
847
Lastpage :
850
Abstract :
Calculation of the antenna noise temperature for an offset Gregorian reflector system is computationally intensive. The main reflector masking technique, where the main reflector is removed from the calculation domain, considerably reduces the computation cost. This technique, however, is less accurate for electrically smaller systems. Recently an improvement to the technique was proposed by introducing a diffraction compensated correction factor. In this case the error on receiving sensitivity can be in the order of a few percent. This paper further improves on the technique by introducing a power dependence to the inverse frequency diffraction compensation. The technique reduces the error of the receiving sensitivity to well below a percent.
Keywords :
Decision support systems
Publisher :
ieee
Conference_Titel :
Antennas and Propagation in Wireless Communications (APWC), 2015 IEEE-APS Topical Conference on
Type :
conf
DOI :
10.1109/APWC.2015.7300186
Filename :
7300186
Link To Document :
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