Patent ID: 9160077
Filing Date: 2015-10-13
Classification: H01Q

Abstract:
1. A metamaterial device, comprising: a metamaterial panel having a thickness between a first panel side surface and a second panel side surface, configured such that the first and second panel side surfaces are perpendicularly disposed to propagation direction of plane electromagnetic waves exiting the second panel side surface, wherein an electromagnetic wave diverging in the form of a spherical wave is emitted from a radiation source and incident on the first panel side surface; wherein the metamaterial panel comprises a first layer having a plurality of core layers and a second and third layer each having a plurality of gradient layers, wherein the second layer is layered on a first side of the first layer, and the third layer is layered on a second side of the first layer which is opposite the first side, so that the second and third layers are symmetrically distributed about the core layers, each of the core layers and each of the gradient layers comprises a sheet-like substrate and a plurality of man-made microstructures attached on the substrate, each of the man-made microstructures is a two-dimensional (2D) or three-dimensional (3D) structure consisting of at least one metal wire; and wherein each of the core layers has the same refractive index distribution, and comprises a circular region and a plurality of annular regions concentric with the circular region, wherein refractive indices in the circular region and the annular regions decrease continuously from np to no as the radius from the center of the circular region increases, and the refractive indices at a same radius are equal to each other.