Title :
New steerable antenna with controllable metamaterial
Author :
Yongzhi Sun ; Zhijian Li ; Weiqiang Zhu ; Zhenhai Ji ; Qi Wang
Author_Institution :
Nanjing Electron. Equip. Inst., Nanjing, China
fDate :
Oct. 31 2012-Nov. 2 2012
Abstract :
In this paper, we realized a steering antenna using a type of active metamaterial with tunable refractive index in L-band. The controllable left-handed metamaterial is based on periodically printed sub-wavelength metallic resonant patterns with embedded microwave varactors. By controlling the phase properties of the radome, the antenna exhibits continuous scanning capability in a range of ±30° under very simple DC voltage control that does not exceed 10 volts. Simulation results on such structure are given, which agrees well with the theoretical analysis. This antenna has a simple structure, is very easy to configure the beam direction, and has a low cost.
Keywords :
antenna phased arrays; beam steering; microwave metamaterials; radomes; refractive index; varactors; voltage control; DC voltage control; L-band; active metamaterial; beam direction; continuous scanning capability; controllable left-handed metamaterial; embedded microwave varactors; periodically printed sub-wavelength metallic resonant patterns; phase properties; radome; steerable antenna; steering antenna; tunable refractive index; Antenna feeds; Antenna radiation patterns; Metamaterials; Microwave antennas; Refractive index; Varactors; metamaterial; steering antenna; varactor;
Conference_Titel :
Radar Conference (EuRAD), 2012 9th European
Conference_Location :
Amsterdam
Print_ISBN :
978-1-4673-2471-7
