Effectiveness of absorbing materials on reducing electromagnetic emissions from cavities measured using a nested reverberation chamber approach

Electromagnetic interference can hinder the operations of systems near the source of the interference. This paper details the process of using a nested reverberation setup in order to determine the absorptive effectiveness of several absorbing materials. Results show that the position of absorbing materials is inconsequential as long as they are placed outside of the working volume and away from wall joints of the cavity given that the cavity is overmoded and the cavity under consideration produces a well stirred environment during normal operation.