A Wide-Frequency Model of Metal Foam for Shielding Applications

The use of metal foam continues to grow in terms of research and application. Recently, new developments in the electromagnetic (EM) environment, such as shielding applications, have been proposed. A model of metal foam shielding is developed and discussed in this paper to characterize and simulate the EM shielding behavior. More specifically, the EM characterization has been considered, and experimental shielding effectiveness measurements have been performed. These new double wire-mesh screens, obtained as a development of previously planar shields, allow the design of metal foam EM shields, showing good agreement results among this model, some prototype of this model, and metal foams. The good agreements among data pave the way to improve the model for the low-frequency metal foams behavior.