Multifunctional Electromagnetic Concentrator Based on Complementary Media and Realized With Multilayer Metamaterials

In this letter, a two-dimensional multifunctional cylindrical electromagnetic concentrator (CEMC) with arbitrary geometries is proposed using transformation optics (TO) and the concept of complementary media. The CEMC not only can concentrate the electromagnetic waves and power, but also can make objects around the concentrator invisible. In addition, the concentrator can produce an illusion effect. An example of a circular CEMC is designed and studied by full-wave simulations. Furthermore, the simplified constitutive parameters of a CEMC are proposed and simulated. With the reduced parameters, the CEMC can be constructed from 10 concentric layers that have equal thickness at different regions, and the required metamaterials in each layer are homogeneous.