The electromagnetic shielding depending on material's parameters

In this study, We are particularly interested in designing and analyzing chiral devices to quantify their shielding effectiveness as a function of frequency. The typical materials used for shielding are the copper, aluminium and steel. In order to do a comparative study between the different types of materials, the results obtained are presented. Due to chirality, there is magnetoelectric coupling. The electric and magnetic shielding effects are shown to be function of the three material parameters (ε, μ, κ). In normal incidence the value of the coefficient of reflection of the chiral mediums is not affected by the variation of the coefficient of chirality; We found that, at normal incident angle, reflection occurs similar to that of isotropic medium. It is shown that materials are not equivalent to reduce electromagnetic fields. Shielding effectiveness depends on the material's parameters.