Title :
A circular Eleven feed with significantly improved aperture efficiency over 1.3–14 GHz
Author :
Yin, Jungang ; Yang, Jian ; Panteleev, Miroslav ; Helldner, Leif
Author_Institution :
Dept. of Electron. & Telecommun., Norwegian Univ. of Sci. & Technol., Trondheim, Norway
Abstract :
A new decade bandwidth circular Eleven feed for future radio telescope projects has been developed, with a significantly improved BOR1 efficiency (therefore aperture efficiency). This Eleven feed is constructed of “circularly” curved folded dipoles on a flat printed circuit board (PCB), with the aim to make this antenna structure more rotationally symmetrical at a very low manufacture cost. The simulated results show that the BOR1 efficiency of the circular Eleven feed achieves better than -1 dB over a decade bandwidth of 1.3-14 GHz, which is considered as a significant improvement for decade-bandwidth feed technology.
Keywords :
UHF antennas; antenna feeds; printed circuits; radiotelescopes; BOR efficiency; PCB; antenna structure; aperture efficiency; bandwidth 1.3 GHz to 14 GHz; bandwidth circular eleven feed; circularly curved folded dipoles; decade-bandwidth feed technology; flat printed circuit board; radio telescope projects; very low manufacture cost; Antenna feeds; Antenna measurements; Apertures; Dipole antennas;
Conference_Titel :
Antennas and Propagation (EUCAP), 2012 6th European Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4577-0918-0
Electronic_ISBN :
978-1-4577-0919-7
DOI :
10.1109/EuCAP.2012.6205966
