Directive radiation of a line-source inside an anisotropic material slab via transformation electromagnetics

A transformation electromagnetics technique for transforming a cylindrical wave into a plane wave is provided. The electromagnetic material parameters in the final coordinate space require only a single spatially varying term of the permittivity tensor for converting the wave front of TE waves. The detailed derivation of the spatially varying constitutive parameters and matching conditions for the plane wave are provided. An example case with a magnetic current line source is reported and the proposed final antenna is proved to be directive using full wave simulations.