Single-layer substrate wideband reflectarray with dual-polarization for multiple OAM beams

In this paper, a single-layer wideband dual-linearly polarized reflective element is developed operating from 13GHz to 15.5GHz. The developed reflective metasurface can produce orbital angular momentum (OAM) vortex waves with required modes, beam numbers, direction, x-, y-or both x-and-y polarizations. To demonstrate this versatility, three reflectarrays with multiple modes, multiple beams, and both x-and-y polarizations are designed, and one is fabricated and measured to validate the design. The measured peak gain, aperture efficiency, divergence angle is 19dBi, 11.54%, 6 degrees, respectively. The designed reflectarray has potential applications for high communication rate. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement