School of Electronic Engineering and Computer Science, Queen Mary University of London, London, UK.
Opt Lett. 2012 Dec 1;37(23):4850-2. doi: 10.1364/OL.37.004850.
A modified Luneburg lens based on Hamiltonian optical transformation with planar feeds is proposed in this Letter. The lens, made of conventional all-dielectric materials, does not have any kind of anisotropy. Therefore, in theory, its bandwidth of operation has no upper frequency limitations in contrast with recent designs utilizing metamaterials. Results for wide-angle radiation and broadband operation are presented.
本文提出了一种基于哈密顿光学变换和平面馈源的改进型 Luneburg 透镜。该透镜由常规全介质材料制成，没有任何各向异性。因此，与利用超材料的最新设计相比，从理论上讲，它的工作带宽没有上限频率限制。文中给出了广角辐射和宽带工作的结果。
