Rainbow-like radiation from an omni-directional source placed in a uniaxial metamaterial slab.
In this paper, the radiation of an omni-directional line source placed in a uniaxial metamaterial slab is experimentally presented. The anisotropic slab made of metallic symmetrical rings with dispersive permeability is investigated both theoretically and experimentally. For low value of the permeability, a directive radiation at the broadside of the slab can be obtained. Due to the excitation of the leaky wave mode supported by this structure, the emitted electromagnetic wave transmits at a greater angle from the normal of the slab as the value of permeability increases along with the frequency. Thus a rainbow-like radiation will be formed since waves of different frequencies will deflect into different directions.
Jiang
Tao
T
The Electromagnetics Academy at Zhejiang University, Zhejiang University, Hangzhou 310027, China.
Luo
Yu
Y
Wang
Zhiyu
Z
Peng
Liang
L
Huangfu
Jiangtao
J
Cui
Wanzhao
W
Ma
Wei
W
Chen
Hongsheng
H
Ran
Lixin
L
D016880:Anisotropy; D003116:Color; D003198:Computer Simulation; D008027:Light; D008029:Lighting / Q000379:methods*; D008420:Manufactured Materials; D008962:Models, Theoretical; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation