Controlling Conical Beam Carrying Orbital Angular Momentum with Transmissive Metasurface

Figure 1

Schematic of the proposed transmissive metasurface. The primary radiation from a patch antenna is reshaped into a conical radiation when it passes through the proposed metasurface through a predesigned transmission phase pattern. The red and gray dotted lines on the metasurface denote the radial and circumferential directions, respectively.