Performance Enhancement of Reconfigurable Metamaterial Reflector Antenna by Decreasing the Absorption of the Reflected Beam

In this study, a new concept for Ka-band 5G communication tunable reflector metasurface (MS) beam steering at 28 GHz is proposed. Varactor diodes are used as the tunability component of each unit cell MS. Significant improvements in and bandwidth performance were achieved using referred to stripes configuration. Several different geometries cells arranged designed achieve better directionality, gain, sidelobe level (SLL), Simulation results three-stripe MS with stripe showed phase dynamic range reduced reflectance losses compared typical one-stripe The simulation significant improvement 3 dB, depending on angle uniform (one stripe). Furthermore, approximately 50% accuracy operating frequencies was demonstrated. Manufacturing considerations discussed study.