Artificial Dielectric Based on Resistive Squares

Resumo

Based on the solution to the problem of diffraction of an electromagnetic wave normally incident onto a multilayer array of resistive elements, the dispersion of the effective permittivity of a structure comprised of resistive squares placed into a dielectric layer is calculated. It is established that the dispersion has a relaxation character. The feasibility of controlling the dispersion characteristic in a wide range by varying the parameters of the structure is shown. The ratio of the wavelength to the period of the structure at which the structure under consideration is adequately represented by a homogeneous layer is estimated.