Radiation and matching characteristics of a novel dual-band dielectric loaded coaxial horn

Fedor F. Dubrovka; Yuriy A. Ovsianyk; Rostyslav F. Dubrovka

doi:10.3103/S0735272712120059

Authors

Fedor F. Dubrovka National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Ukraine https://orcid.org/0000-0002-3485-6822
Yuriy A. Ovsianyk National Technical University of Ukraine "Kyiv Polytechnic Institute", Ukraine https://orcid.org/0000-0001-8931-5612
Rostyslav F. Dubrovka Queen Mary, University of London, United Kingdom https://orcid.org/0000-0001-6900-1819

DOI:

https://doi.org/10.3103/S0735272712120059

Keywords:

сoaxial feed system, horn antenna, dielectric loaded horn, dual-band feed horn

Abstract

Copolar and crosspolar radiation as well as matching characteristics of a novel dual-band coaxial hybrid-mode feed horn with partial dielectric loading [1] for reflector antennas have been numerically and experimentally investigated. In comparison with dual-band corrugated horns this horn has higher crosspolar level, but provides larger band separation and rather good electrical performances over a wide frequency range (20% and more) within each operational frequency band. Furthermore, the main concept of the coaxial feed system can be easily extended for multi-band cost-effective applications in reflector antennas with polarization diversity.

References

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