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The performance of electromagnetically thin planar shields are investigated in the time domain considering near field sources in order to extract the relevant features of reference configurations. The analysis is performed numerically and the influence of shield constitutive parameters and of the source distance on the relevant time-domain shielding parameters is also presented.
A planar screen made of a periodic array of small resonant particles showing a strong magnetic resonance is studied in detail. Two types of inclusions are considered: the double split-ring resonator (SRR) and the spiral resonator (SR). The homogenized screen is shown to behave as a homogeneous slab with an effective magnetic permeability having large positive or negative values around the magnetic...
The shielding performance of planar screens made of microstructured materials are investigated. In particular, the considered microstructured materials may consist of periodic or random arrangements of small metallic and/or dielectric particles. The canonical problem of normal plane-wave incidence is studied by means of homogenized approaches and/or through full-wave calculations. The role of the...
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