Title :
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
fDate :
Oct. 29 2007-Nov. 1 2007
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;
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
DOI :
10.1109/IMOC.2007.4404215
