Ultra-Wideband MIMO Antenna Design for THz Application

The need for new frequency bands in contemporary wireless communications networks is always growing. The Terahertz frequency band, which spans 0.1 THz to 10THz, is one of the most promising and practical resources to be used in wireless networks technologies beyond 5G. This research presents a proposed Ultra-Wideband 2x2 MIMO antenna model intended for THz applications. The growing influence of mutual coupling between the antenna elements, which has a significant impact on the antenna’s overall performance, is one of the difficulties in designing antennas in THz frequency ranges. In order to lessen the impact of mutual coupling on the MIMO antenna array’s performance, many strategies are used, including loading slots, high isolation, orthogonal alignment, and parasitic structures. This paper’s proposed model is a rectangular radiator measuring 133×255μm2 with a circular cut in the middle. It will be demonstrated that this design offers a sizable bandwidth of about 4.5 GHz (from 5.5 GHz to 10 GHz), making it suitable for usage in high-bit-rate, fast wireless networks. Additionally, the suggested antenna’s performance is examined in terms of a number of variables, including Total Active Reflection Coefficient (TARC) and Channel Capacity Loss (CCL), and it is then contrasted with other designs that are currently in use. It is discovered that the suggested model performs noticeably better than the current designs in a number of areas.