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Progress In Electromagnetics Research C
ISSN: 1937-8718
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IMPROVING THE BEAM EFFICIENCY OF AN OFFSET PARABOLIC REFLECTOR ANTENNA FOR SPACEBORNE RADIOMETRIC APPLICATIONS

By D. A. Pujara, S. B. Sharma, and S. B. Chakrabarty

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Abstract:
This paper presents a novel technique to improve the cross-polarization and the beam efficiency of an offset parabolic reflector antenna used for space borne radiometric applications. A special multi-mode primary feed (tri-mode conjugate matched feed) is used to illuminate the offset parabolic reflector antenna. The simulated data on the radiation characteristics of the offset parabolic reflector antenna with a matched feed has been compared with that of a conventional Potter horn. It is observed that the tri-mode feed suppress the unwanted high cross-polarization of an offset reflector antenna and improves the beam efficiency.

Citation:
D. A. Pujara, S. B. Sharma, and S. B. Chakrabarty, "Improving the Beam Efficiency of an Offset Parabolic Reflector Antenna for Spaceborne Radiometric Applications," Progress In Electromagnetics Research C, Vol. 10, 143-150, 2009.
doi:10.2528/PIERC09080103

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