ECCOSORB^® HR is a series of lightweight, free space, broadband absorbers that are electrically conductive.  Made from reticulated (open-cell) polyurethane foam, ECCOSORB^® HR has a  continuous An absorber in which the dielectric properties effectively vary as the radiation passes through the absorber. This is accomplished by stacking layers having different dielectric properties (ECCOSORB AN, ANW).conductivity gradient that is single layer construction and inexpensive.

Products are selected based on operating frequency and can achieve less than 1% reflection (-20 dB) for normal incident energy when placed on a metal ground plane.  If required, an integral reflective backing (ML) can be provided.  In situations where the absorber will come in contact with water, fuel, hydraulic fluids, or will be used outdoors, ECCOSORB^® ANW is recommended. 

Applications include shrouds for low side lobe reflector antennas, isolation of adjacent antennas and array elements, in radar absorbing blankets for military applications and in moderate performance anechoic chambers and less sensitive regions of high performance chambers.