title: Rainbow-like radiation from an omni-directional source placed in a uniaxial metamaterial slab.
abstract: 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.
authors.affiliation: The Electromagnetics Academy at Zhejiang University, Zhejiang University, Hangzhou 310027, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Jiang
authors.forename: Yu
authors.initials: Y
authors.lastname: Luo
authors.forename: Zhiyu
authors.initials: Z
authors.lastname: Wang
authors.forename: Liang
authors.initials: L
authors.lastname: Peng
authors.forename: Jiangtao
authors.initials: J
authors.lastname: Huangfu
authors.forename: Wanzhao
authors.initials: W
authors.lastname: Cui
authors.forename: Wei
authors.initials: W
authors.lastname: Ma
authors.forename: Hongsheng
authors.initials: H
authors.lastname: Chen
authors.forename: Lixin
authors.initials: L
authors.lastname: Ran
mesh_terms: 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