ARTIFICIAL COMPOSITE MATERIAL AND ANTENNA MADE OF ARTIFICIAL COMPOSITE MATERIAL

摘要

The present invention relates to an artificial composite material and an antenna made of the artificial composite material. The artificial composite material is divided into multiple regions. An electromagnetic wave arrives at a first surface of the artificial composite material, and is emitted from a second surface opposite to the first surface. The intersection of an ith region and the first surface is a bottom surface of the ith region. The intersection of the ith region and the second surface is a top surface of the ith region. It is assumed that the included angle between the line connecting a radiation source and a point on the bottom surface of the ith region and a straight line perpendicular to the artificial composite material is ?. The included angle ? exclusively corresponds to a curved surface in the ith region. The collection of points, on the bottom surface of the ith region and having the same included angle ?, forms the boundary of the curved surface to which the included angle ? exclusively corresponds. The index of refraction is constant everywhere on the curved surface to which the included angle ? exclusively corresponds. The index of refraction of each region decreases as the included angle ? increases. In the present invention, the transition of the index of refraction of the artificial composite material is designed to be in the shape of a curved surface, thereby reducing the effects of refraction, diffraction and reflection at transitions.