Title :
Edge treatment for sidelobe reduction of parabolic reflector antenna with a two-layer absorber
Author :
Gong, Y.X. ; Mittra, R. ; Zhen, L. ; Yu, W.H. ; Jiang, J.T. ; Shao, W.Z.
Author_Institution :
Sch. of Mater. Sci. & Eng., Harbin Inst. of Technol., Harbin, China
Abstract :
In this paper, we present a method to reduce the sidelobe levels of a given parabolic reflector antenna by coating it with a 2-layer absorber. The absorber is designed by using Genetic Algorithm and an ultra-wideband performance (4.6-18 GHz) is obtained. The simulation results show that the sidelobe level can be reduced by coating the edge of the parabola with 2-layer absorber without compromising the gain.
Keywords :
electromagnetic wave absorption; genetic algorithms; interference suppression; reflector antennas; ultra wideband antennas; edge treatment; genetic algorithm; parabolic reflector antenna; sidelobe reduction; two-layer absorber; ultra wideband antenna; Coatings; Electromagnetic compatibility; Genetic algorithms; Metals; Radar antennas; Reflector antennas; Wideband; Parabolic antenna; sidelobe; wideband absorber;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5996946
