Transmission line approach for transformation electromagnetics

We present a physical equivalent circuit model for 2D full-tensor anisotropic materials to realize transmission-line-based invisibility cloaks. With the equivalent circuit, it is shown that the equivalent circuit expresses well with full-tensor anisotropic material and diagonal and off-diagonal components of the permeability tensor physically correspond to the self- and mutual inductances per unit length in the unit cell, respectively. A cylindrical cloak is designed and its inherent broadband operation is confirmed by SPICE circuit simulator.