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Total efficiency enhancement of X-band compact choke horn antenna with circular polarization and isoflux pattern

Published online by Cambridge University Press:  29 June 2015

Eric Arnaud ,
Luc Duchesne ,
Kevin Elis ,
Jamil Fouany ,
Thierry Monediere  and
Marc Thevenot
Eric Arnaud*
Affiliation:
Univ. Limoges, CNRS, XLIM, UMR 7252, F-87000 Limoges, France
Luc Duchesne
Affiliation:
SATIMO, 17 Avenue de Norvège, 91140 Villebon Cedex, France
Kevin Elis
Affiliation:
CNES, 18 Avenue Edouard Belin, 31401 Toulouse Cedex 9, France
Jamil Fouany
Affiliation:
Univ. Limoges, CNRS, XLIM, UMR 7252, F-87000 Limoges, France
Thierry Monediere
Affiliation:
Univ. Limoges, CNRS, XLIM, UMR 7252, F-87000 Limoges, France
Marc Thevenot
Affiliation:
Univ. Limoges, CNRS, XLIM, UMR 7252, F-87000 Limoges, France
*
Corresponding author: E. Arnaud Email: [email protected]
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Abstract

This paper presents a solution to reduce the feed complexity and to improve the total efficiency of X-band compact choke horn antenna with circular polarization and isoflux pattern. This kind of antenna had been designed before by our laboratory for nanosatellite applications, but it required a 4-way divider with phase shifter which generates the insertion losses and therefore a lower realized gain (RG). Among several feeds, a uniform circular helix antenna has been used here, which produces a satisfying feed without too much damage for the axial ratio (AR) and the isoflux pattern over a 400 MHz radiation bandwidth (8.0–8.4 GHz). Theoretical and experimental results show an AR lower than 5 dB and a RG higher than 0 dB at the limit of coverage, i.e. 65° whatever the azimuth angle (φ).

Keywords

Nanosatellite applicationCircular polarizationCompact choke hornIsoflux patternHelix antenna
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 1 , February 2017 , pp. 197 - 203
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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References

REFERENCES

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