New multilayer arrangement of dielectric layers for enhancement of the magnetic shielding absorption at low frequency in the near field

This paper presents a new multilayer arrangement structure based on the dielectric polymer, which allows an effective absorption of magnetic wave radiation, and a selective reflection of desired wavelengths of the shield composite in the low frequency range that is not widely used in general cases. This is caused by the impedance mismatch between conductive films and air, and between conductive films and dielectric polymer layer. The structure is built from alternating conductive films and dielectric polymer layers, in a way that dielectric polymer layers are sandwiched between conductive films symmetrically in both directions. The simulation results of both the absorption and the total shielding effectiveness from the developing analytical model are in good agreement with experimental characterization, and could be further extended to the design of systems operating in other frequency ranges.