Novel Reflection-Only Method for Electromagnetic Characterization of Isotropic Dispersive Materials

A new reflection only method for electromagnetic characterization of PEC-backed material is proposed. By exploiting waveguide high-order modes, this method can retrieve permittivity and permeability of dispersive and lossy materials. In contrast to similar researches, this method is mathematically simple and easy to implement. An example of retrieving/retrieval electromagnetic parameters of a dispersive material is carried out to show the applicability of the method.