Design of Reconfigurable Symmetrical Double-Beam Holographic Antenna

In this paper, the influence of reflected wave on the radiation performance of holographic antenna is analyzed, and a double-beam holographic antenna is designed. The proposed antenna etches slots on the SIW waveguide and loads PIN diodes to achieve dynamic modulation. By introducing a reflected wave through a short circuit at the end of the waveguide, the reflected wave excites the holographic surface of the incident wave to generate a beam direction that is symmetric about the Z-axis. The proposed antenna is excited by a single feeding and shares the same aperture, and has the characteristics of simple structure and high aperture efficiency.