New Methods Developed for Shielding Material Characterization
نویسندگان
چکیده
− The theory of electromagnetic shielding is based on the waves equations describing the behavior of electromagnetic field in substance and also boundary phenomena by means of Fresnel’s reflection and transmission coefficients. The interaction between electromagnetic radiation and infinite plane shield having finite thickness d, placed in free space in plane waves region depends of material/shield macroscopic parameters (ε, μ, σ), its thickness, radiation's frequency and incidence angle. Many models have been issued but lately Schelkunoff model was accepted. Even if it is formally accurate, it has not been experimentally validated up to present, in the area of electrically thick samples, according to numerous works in the field. The paper deals with original methods for visualization, measurement and simulation of shielding effectiveness.
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