Characterization of the shielding effectiveness of composite materials using ultra-wide band Vivaldi antennas

In this paper, a new method for the characterization of the shielding effectiveness of composite materials is developed. It is based on a pair of Vivaldi antennas designed to cover an ultra-wide band frequency from 1.5 GHz to 8 GHz. Measurements were made on 10 composites having different thickness and composition.