RegisterFrequency selective surfaceFrequency selective surface can be imagined as a dielectric layer of very large extent, which contains planar conductive elements on its true side and which backside is free (without any metallic part). Planar conductive elements can be arbitrarily shaped, but within one selective surface, all the elements are usually identical. Conductive elements can be conductive (electrically conductive elements) or can be implemented as slots in continuous metallic true side (magnetically conductive elements). If the true side of the selective surface is illuminated by harmonic waves of various frequencies, some waves are transmitted with a minimum attenuation, some waves are totally reflected back to the half-space of the source, and some waves are partially transmitted and partially reflected. Hence, the surface performs a frequency selection of incident waves. Back
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