Implementation of ENG Metasurfaces for 5G Antenna Systems

In this article, epsilon-negative (ENG) metasurfaces and their application in enhancing antenna performance for 5G applications are presented. A unit cell designed to operate at 26 GHz has been introduced and validated using the 3-D electromagnetic simulator, computer simulation technology (CST). This unit cell is then implemented to construct a metasurface with a circularly polarized radiating patch antenna. Through the analysis of the S-parameters and permittivity of the ENG metasurface, improvements in gain and beamforming capabilities have been realized. A detailed analysis of beamforming capabilities has been performed using the minimum variance distortionless response (MVDR) algorithm. It is shown that the proposed design also enhances the wide-bandwidth capabilities of the antenna by employing a single metasurface layer. Additionally, the design offers a low profile and circular polarization, making it ideal for 5G millimeter-wave systems and multiple input multiple output (MIMO) applications. The results indicate that the ENG metasurface not only boosts antenna efficiency and gain but also enables adaptive beam steering, making it highly suitable for advanced communication systems requiring high data rates and reliable connectivity.