Man-made composite material and man-made composite material antenna

摘要

The present invention relates to a man-made composite material. The man-made composite material is divided into a plurality of regions. A plane electromagnetic wave is incident on a first surface and exits in the form of a spherical wave from a second surface of the man-made composite material opposite to the first surface. Reverse extensions of the exiting electromagnetic wave intersect with each other at a virtual focus of the man-made composite material. A line connecting the virtual focus to a point on the top surface of the ith region and a line perpendicular to the man-made composite material form an angle θ therebetween, which uniquely corresponds to a curved surface in the ith region. A set formed by points on the top surface of the ith region that have the same angle θ forms a boundary of the curved surface to which the angle θ uniquely corresponds.

主权项

1. A man-made composite material having a thickness between a first and second surface, configured such that the first and second surfaces are perpendicularly disposed to a propagation direction of a plane electromagnetic wave, wherein the man-made composite material is divided into a plurality of regions; the plane electromagnetic wave is incident on the first surface of the man-made composite material and a spherical electromagnetic wave exits from the second surface of the man-made composite material opposite to the first surface;
reverse extensions of the exiting spherical electromagnetic wave intersect with each other at a virtual focus of the man-made composite material; an ith region is one of the plurality of regions, where i is a positive integer and selected from a group consisting of 1, 2, 3, . . . , etc.; an intersection between the ith region and the first surface is a bottom surface of the ith region, an intersection between the ith region and the second surface is a top surface of the ith region, and each ith region has a curved surface extending from the top surface to the bottom surface; each ith region having a set of first straight lines connecting the virtual focus to a corresponding set of points on a circular boundary line between the ith region's curved surface and the ith region's top surface, and a second straight line perpendicular to the man-made composite material, wherein each first straight line forms an angle θ with the second straight line, wherein the same angle θ corresponds to each of the points in the set of points; each ith region having additional sets of first straight lines connecting the virtual focus to additional corresponding sets of points along the ith region's curved surface, wherein each additional set of points on the ith region's curved surface form a circular line and has a same uniquely corresponding angle θ and a same refractive index; each ith region's curved surface has a generatrix which extends between the bottom surface and the top surface of the ith region and is formed by rotating the generatrix about the second straight line; and refractive indices of each of the regions increase gradually as the angle θ increases.