ELF Shielding of Finite-Size Finite-Thickness Screens Against Magnetic Fields

The magnetic shielding effectiveness of finite-width thick planar screens against near-field sources producing extremely low-frequency magnetic fields is studied in detail. In particular, by means of a careful numerical analysis, the effects of several screen parameters (such as dimensions, constitutive parameters, and position with respect to the source) are accurately assessed, in addition to shedding light into the main field penetration mechanisms.