The analysis of the shielding properties of chiral materials slabs is here presented, first deriving the spectral representation of the shielded fields, then getting the asymptotic expression of the transmission matrix in the higher frequencies. The time response of the shielded field for the NEMP incidence is finally deduced in a closed form.

The analysis of the radiating properties of a multilayer structure where chirality is introduced is here addressed. Both the effects on the resonant behaviour and on the radiation patterns have been considered for different multilayer structures. The adopted procedure is full wave and leads to the numerical analysis performed via the Methods of Moment in the spectral domain.

The analysis of the shielding properties of a planar wire-mesh shield embedded in a general isotropic--chirality is included--or anisotropic stratified media is here presented. A suitable model of the grating has been introduced in order to consider the occuring phenomena, in fact through a spectral technique the electromagnetic problem is translated into the equivalent circuit network model that allows to express the time response of the shielded field for the NEMP incidence in a closed form.