Extension and verification of absorbing material effectiveness on reducing electromagnetic emissions

Electronic devices, more specifically, devices enclosed inside cavities require special protection from sources of electromagnetic radiation. These include sources from outside and also sources that are co-located. This paper discusses experimental data obtained by measuring the absorbing effectiveness of materials of varying thickness. Results indicate that an increase in absorber surface area provides an overall better reduction in energy absorption while the increase in volume of the absorbing materials demonstrates little to no difference over one absorber.