Circuit modeling of multiband high-impedance surface absorbers in the microwave regime

Inthispaper,wepresentasimplecircuitmodeltostudytheabsorptionofelectromagneticwavesbyamultilayer structure with a high impedance surface in the microwave regime. The absorber consists of a stack of twodimensional arrays of sub-wavelength meshes or patches separated by dielectric slabs and backed by a metallic ground plane, with a single resistive sheet placed on the top layer. We observe the appearance of low-frequency r

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