REFLECT ARRAY, REFLECT ARRAY SYSTEM, COMMUNICATION SYSTEM, WALL MATERIAL WITH BUILT-IN REFLECT ARRAY, AND MOBILE COMMUNICATION SYSTEM

Provided is a reflect array that enables reflectance at a plurality of angles of incidence while maintaining a high gain without causing a decrease in the electric field intensity of a reflector plate, and that can simplify the installation of the reflect array. In the reflect array, a plurality of first elements and a plurality of second elements are arranged on XY plane. The first elements are arranged in Y direction to form a first row of elements. The second elements are arranged in Y direction to form a second row of elements. The first element rows and the second element rows are alternately arranged in X direction. The two angles of maximum reflectance are on the same positive or negative side of X-axis.