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Traditional microwave absorbers are typically made of ferrite powders and/or ferromagnetic metal powders and rely on ferromagnetic relaxation in the powders [1]. These absorbers can show strong absorption over a relatively wide frequency range if the thickness is sufficiently large, and for a given absorption level the frequency bandwidth usually decreases with a reduction in the thickness. One can...
In this paper, the electromagnetic response of a planar array of electric ring resonators combining with a cross structure on a substrate is investigated. The retrieved effective dielectric parameters from scattering data demonstrate a negative magnetic permeability as well as a negative electric permittivity in wide frequency range of 0.65–1.0 THz. It is proven that, artificial metamaterials using...
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