A Horizontally-Polarized, Broadside, Holographic Antenna Design with Rotationally-Symmetric Beam

In this paper, a high aperture efficiency, horizontally-polarized, planar holographic antenna with nearly rotationally-symmetric, broadside radiation beam is proposed. The antenna consists of three layers: the first layer is a sinusoidally-modulated polarization-insensitive metasurface producing a bi-direcional rotaionally-symmetric beam towards the front and back sides, the second layer is an air gap, and the third layer is an AMC layer, which effectively reflects the backword radition into the forward direction. Simulation results shows that the proposed dipole-fed holograhic antenna exhits a nearly rotationaly-symmetric radiation towards the broadside direction with a gain of 19.25dBi at 15GHz.