Title :
Measurements of a 1 to 13 GHz model of a dual polarized low-profile log-periodic feed for US-SKA
Author :
Olsson, Rikard ; Kildal, Per-Simon ; Weinreb, Sander
Author_Institution :
Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
We present measured results for a dual polarized 1 to 13 GHz laboratory model of a feed for use in reflector antennas. The main goals of the laboratory model were achieved: it provides dual polarization and can provide more than a decade bandwidth. The aperture efficiency in a primary fed reflector system is greater than 56% over the entire band, and the input reflection coefficient of the feed is better than -5.5 dB. The results agree well with computed values.
Keywords :
aperture antennas; electromagnetic wave polarisation; electromagnetic wave reflection; log periodic antennas; microwave antenna arrays; radiotelescopes; reflector antenna feeds; 1 to 13 GHz; USA-SKA; aperture efficiency; dual polarization; dual polarized low-profile feed; input reflection coefficient; log-periodic feed; primary fed reflector system; reflector antennas; square kilometer array; Apertures; Bandwidth; Extraterrestrial measurements; Feeds; Frequency; Phased arrays; Polarization; Radio astronomy; Reflector antennas; Ultra wideband antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1552110
