In this article, the use of metal foams for shielding problems is investigated on the bases of an effective medium approach. Specifically, a shielding effectiveness analysis has been performed by modeling metal foams as a homogeneous medium described by a plasma dispersion profile.The suggested approach is experimentally validated demonstrating that metal foams behave like a plasma medium, with a plasma frequency in the microwave range. The proposed effective medium approach has also been implemented both with a proprietary and with a commercial full-wave simulator. Results demonstrate that, by using the plasma model, general electromagnetic analysis of metal foams can be performed with common simulators and with affordable computational efforts.
New materials for electromagnetic shielding: Metal foams with plasma properties
MONTI, GIUSEPPINA;CATARINUCCI, Luca;TARRICONE, Luciano
2010-01-01
Abstract
In this article, the use of metal foams for shielding problems is investigated on the bases of an effective medium approach. Specifically, a shielding effectiveness analysis has been performed by modeling metal foams as a homogeneous medium described by a plasma dispersion profile.The suggested approach is experimentally validated demonstrating that metal foams behave like a plasma medium, with a plasma frequency in the microwave range. The proposed effective medium approach has also been implemented both with a proprietary and with a commercial full-wave simulator. Results demonstrate that, by using the plasma model, general electromagnetic analysis of metal foams can be performed with common simulators and with affordable computational efforts.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
