Antenna design Design and Performance Analysis of a Graphene-Based Two-Port MIMO Yagi-Uda Antenna for THz Applications

Abstract The rapid advancements in terahertz (THz) communication demand high-performance antenna solutions with enhanced gain, directivity, and miniaturization. This study presents the design and performance analysis of a graphene-based two-port multiple-input multiple-output (MIMO) Yagi-Uda antenna optimized for THz applications. Graphene, known for its tunable conductivity and superior electronic properties, is employed as the primary radiating material to achieve reconfigurability and high efficiency at THz frequencies. The proposed MIMO Yagi-Uda structure features a compact design with strategically placed directors, reflectors, and driven elements to maximize directivity and minimize mutual coupling.The antenna’s electromagnetic behavior is analyzed using full-wave simulations, demonstrating significant improvements in gain, bandwidth, and radiation efficiency. The performance parameters, including scattering parameters (S-parameters), envelope correlation coefficient (ECC), gain, and radiation pattern, are evaluated to assess its suitability for high-speed THz wireless communication and sensing applications. The results indicate that the proposed design achieves high isolation, low mutual coupling, and excellent directivity, making it a promising candidate for next-generation THz MIMO systems.This study contributes to the ongoing development of THz antennas by providing insights into the advantages of graphene-based materials and MIMO-Yagi-Uda configurations for futuristic wireless communication technologies.