Title :
Overview of developments of the eleven feeds
Author :
Jian Yang ; Kildal, P. ; Pantaleev, M.
Author_Institution :
Dept. of Signals & Syst., Chalmers Univ. of Technol., Gothenburg, Sweden
Abstract :
An overview of different versions of the Eleven feed and recent development is presented in the paper. Eleven feeds have a nearly constant beamwidth and a fix phase center, with a performance of an aperture efficiency higher than 60%, -10 dB reflection coefficient, -0.2dB radiation efficiency, and -15dB cross-polar level, over a decade bandwidth. The Eleven feed can be very compact after applying newly developed optimization algorithms, and some new results of the feed in dual-reflector antennas are reported here.
Keywords :
optimisation; reflector antenna feeds; aperture efficiency; constant beamwidth; cross-polar level; decade bandwidth; dual-reflector antennas; eleven feeds; fix phase center; optimization algorithms; radiation efficiency; reflection coefficient; Antenna feeds; Apertures; Broadband antennas; Radio astronomy; SKA; VLBI; decade-band feed; radio telescope; reflector antenna;
Conference_Titel :
Antennas and Propagation (EuCAP), 2013 7th European Conference on
Conference_Location :
Gothenburg
Print_ISBN :
978-1-4673-2187-7
Electronic_ISBN :
978-88-907018-1-8
