“…RAM makes use of energy-exchange properwhich are able to transform the electromagnetic radiation in heat, in determined frequency bands. The attenuation of the electromagnetic wave can also be favored by the adequate combination of the phase canceling phenomenon by adjusting the electrical thickness of RAM (Faez et al, 2005;Dias, et al, 2005;Folgueras, et al, 2007;Gama et al, 2011;Pinto and Rezende, 2012). The following applications are among the most important for the RAM area: (a) to improve patterns of devices, (c) to cover inside test rooms (anechoic chambers) in order to achieve "free space" conditions for measurements of components and systems, (d) to reduce the radar cross section (RCS) of targets, (e) to achieve both "free space" termination and waveguide and coaxial termination (dummy loads), and (f) to improve the shielding of enclosures and containers when used as gasket materials.…”