Metasurface-Enabled Full 360° Azimuth Surface-Level Beam Scanning Antenna System

This paper investigates the use of metasurface (MS) to enhance the scan range performance of the phased-array antenna for next-generation sub-6 GHz applications. The proposed system consists of a cylindrical Huygens' MS integrated with the source (phased array), and the MS steers the beam from the source towards the horizon. The metasurface's inherent symmetry also allows for full azimuth surface-level scanning. The proposed system achieves a gain of more than 15.5 dBi across the frequency range of 3.5-3.8 GHz.