Study on the Novel Grid Sheets Consisting of Conductive Material and Metal Foil and their Application as EM Wave Absorber

Abstract

Recently, EM wave absorbers are frequently applied to prevent undesired EM waves. In our previous works, EM wave absorbers consisting of a artificially designed material and a ferrite rubber mixture have been proposed. As the newly materials, the authors propose the grid sheets consisting of the conductive material and the metal foil, and evaluate their equivalent relative permittivities. Next, EM wave absorbers consisting of a proposed sheet and a permalloy composite material are designed, and their reflection characteristics are experimentally evaluated.