Orbital Angular Momentum Beam Antenna Systems for Wireless Communications – A Brief Review

Abstract

Orbital angular momentum (OAM) beams, also known as vortex beams, have gained a significant attraction in the past decade. Their ability to offer an infinite number of modes (theoretically) opens doors to develop new high datarate and secure communication system. In this paper, we present the general theory of OAM beams and give a brief overview of different techniques presented in the literature to achieve such beams with high order mode purity.

Conformal holographic Metasurface-Based Beamforming Antenna using a 3D-Printed Flexible Substrate

“…Furthermore, metasurfaces perform exceptionally well in polarization control, allowing antennas to comply with certain polarization specifications in communication systems as well as defense applications [16]- [18]. In addition, by suppressing undesired polarization components in the radiation pattern, metasurfaces improve antenna performance by lowering crosspolarization.…”