Title :
Multi-beam antenna at Q band
Author :
Xiang, Bo ; He, Minmin ; Meng, Hongfu ; Chen, Sen ; Li, Yunhua ; Dou, Wenbin
Author_Institution :
State Key Lab. of Millimeter Waves, Southeast Univ., Nanjing, China
Abstract :
In this paper, the design and experimental results of a multi-beam antenna for communications link are presented. The proposed antenna has 16 circular waveguide ports around a constant permittivity dielectric spherical lens. By controlling the feeding network of the waveguide, the radiation pattern of the antenna can switch from one beam to another. The gain of each beam of the designed multi-beam antenna is about 28 dB, the sidelobe levels of all the 16 beams are lower than -15 dB, and the adjacent beam overlap is about at -5 dB. The measured radiation performances of the multi-beam antenna have good agreements with the simulations.
Keywords :
antenna feeds; antenna radiation patterns; circular waveguides; lens antennas; microwave antennas; multifrequency antennas; permittivity; Q band; antenna radiation pattern; circular waveguide ports; communications link; constant permittivity dielectric spherical lens; feeding network; gain 28 dB; multibeam antenna; Antenna feeds; Antenna measurements; Antenna radiation patterns; Communication switching; Communication system control; Dielectric constant; Lenses; Performance evaluation; Permittivity; Switches;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5324966
