Planar metasurface retroreflector with wide bandwidth and high efficiency

摘要

The present invention relates to a planar metasurface retroreflector with wide bandwidth and high efficiency. According to the present invention, a plurality of first unit cells arranged in a lattice on the upper surface of the substrate and continuously arranged at a set interval in the x-axis direction to retroreflect the radio waves incident in the x-axis direction with respect to the xy plane of the substrate. A plurality of first supercells composed of Provided is a planar metasurface retroreflector comprising a plurality of second supercells composed of According to the present invention, retroreflection can be generated in two directions by placing the strip-shaped repeating metastructure on both sides of the substrate, and the operating bandwidth and efficiency of the retroreflective metasurface can be improved by optimizing the distance between the ground plate and the substrate. It provides an advantage for improvement.