Title :
Design of low profile cylindrical luneburg lens antenna
Author :
Tse-Tong Chia ; Wai-Yean Lim
Author_Institution :
DSO Nat. Labs., Singapore, Singapore
Abstract :
The design of a low profile, electrically large cylindrical Luneburg lens is presented. The lens is designed to have a focus away from its surface. A waveguide feed is designed for use in a 3×1 array feed for the lens. The H-plane beamwidth of the lens antenna is increased by capping the circular top and bottom of the lens with PEC disks. For this model, the 3dB E-and H- plane beamwidths are 1.5° and 21.4°, respectively. Its directivity at the centre frequency is 27.8 dBi, with an efficiency of 56.6%.
Keywords :
antenna feeds; circular waveguides; lens antennas; waveguide antenna arrays; 3×1 array feed; H-plane beamwidth; PEC disks; cylindrical Luneburg lens antenna design; lens circular bottom; lens circular top; low profile design; waveguide feed design; Broadband antennas; Dielectrics; Europe; Feeds; Lenses; Luneburg lens; len-antenna; low profile; waveguide feed;
Conference_Titel :
Antennas and Propagation (EuCAP), 2014 8th European Conference on
Conference_Location :
The Hague
DOI :
10.1109/EuCAP.2014.6902461
