Analysis of omnidirectional dual-reflector antennas with radomes

Author

Resende, Úrsula C. ; Moreira, Fernando J S ; Filho, Odilon M C Pereira

Author_Institution

CEFET-MG, Belo Horizonte

fYear

2007

fDate

Oct. 29 2007-Nov. 1 2007

Firstpage

70

Lastpage

74

Abstract

We investigate the influence of dielectric radomes on the electromagnetic performance of dual-reflector antennas suited for omnidirectional coverages. The dual-reflector systems are fed by a TEM coaxial horn. Accurate analyses are provided by surface integral equations numerically evaluated by the method of moments, taking into account all electromagnetic couplings among the several antenna elements. The analyses demonstrate that lambda/2-window radomes do not significantly influence the antenna behavior across the operation band. But the way the radome is attached to the dual-reflector structure may significantly influence the sidelobe levels of the radiation pattern.

Keywords

antenna radiation patterns; electromagnetic coupling; integral equations; method of moments; radomes; TEM coaxial horn; antenna behavior; dielectric radomes; electromagnetic couplings; electromagnetic performance; method of moments; omnidirectional coverages; omnidirectional dual-reflector antennas; radiation pattern; surface integral equations; Microwave Theory and Techniques Society; Method of moments; omnidirectional antennas; radomes; reflector antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Optoelectronics Conference, 2007. IMOC 2007. SBMO/IEEE MTT-S International

Conference_Location

Brazil

Print_ISBN

978-1-4244-0661-6

Electronic_ISBN

978-1-4244-0661-6

Type

conf

DOI

10.1109/IMOC.2007.4404215

Filename

4404215