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Compact and high-performance feed systems for prime-focus reflector antennas

Published online by Cambridge University Press:  13 August 2013

Ramesh Chandra Gupta ,
Khagindra K. Sood  and
Rajeev Jyoti
Ramesh Chandra Gupta*
Affiliation:
Space Applications Centre, Indian Space Research Organisation, Ambawadi Vistar P.O., Jodhpur Tekra, Ahmedabad -380 015, Gujarat, India
Khagindra K. Sood
Affiliation:
Space Applications Centre, Indian Space Research Organisation, Ambawadi Vistar P.O., Jodhpur Tekra, Ahmedabad -380 015, Gujarat, India
Rajeev Jyoti
Affiliation:
Space Applications Centre, Indian Space Research Organisation, Ambawadi Vistar P.O., Jodhpur Tekra, Ahmedabad -380 015, Gujarat, India
*
Corresponding author: R.C. Gupta Email: [email protected]
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Abstract

This paper reports design and successful development of new and high performance transmit and receive feed systems for reflector antennas at “lower-extended C-band”. The horns are analyzed and optimized using the mode-matching technique-based software CHAMP. Other feed components are designed with the aid of the mode-matching technique and finite element method based softwares viz. MICIAN and HFSS. The predicted radio frequency (rf) performances comply with the measured results with small deviation. Some issues related to feed system such as impact of horn outer structure; such as base for tooling ball, feed bracket for struts etc. on its rf performance are discussed. It is shown that the outer feed structure plays a significant role apart from the internal cavity of the horn for prediction of electrical performance of the feed system. Besides high rf performance; good mechanical properties such as compactness and ease to fabrication are achieved through innovative feed design.

Keywords

Horn antennaFeed systemSatellite communicationOrtho-mode transducer
Type
Industrial and Engineering Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 5 , Issue 6 , December 2013 , pp. 753 - 758
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2013 

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References

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