Abstract
In this paper, a novel double-incidence and multi-band left-handed metamaterial (LHM) was presented based on coplanar electric and magnetic resonators, whose structure is composed of two orthogonal Z-shaped metallic strips on each side of the dielectric substrate respectively. Both the double Z-shaped LHM for electromagnetic wave parallel and normal incidences are discussed. The structure exhibits two LH pass-bands and one right-handed pass-band when electromagnetic waves are incident parallel to the substrate, while it can achieve multiple LH pass-bands under normal incidence with the same structure and only single size of Z-shaped strips. By means of theoretical analysis, building equivalent magnetic resonance circuit models, numerical simulation, extracting the effective permittivity, permeability from S parameters and the experimental measurement, the left-handed properties are analyzed and verified. The fabricated double Z-shaped metamaterials will create a new way to prepare the electromagnetic cloak which is suitable for multiple frequencies, and the cloak of infrared or visible frequency, especially with the same structure and in same size from different incident directions.
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