Performance Analysis of a Compact Eye-Shaped Slot Antenna for MIMO UWB Applications

This research paper introduces a compact multiple-input, multiple-output (MIMO) ultra-wideband (UWB)
antenna design featuring an eye-shaped slot configuration. The proposed antenna structure comprises
two eye-shaped slots positioned on a ground plane, with the strategic insertion of a T-shaped stub to
enhance their isolation. The antenna exhibits an impressive impedance bandwidth spanning 3.5 GHz
(4.83 to 8.35 GHz) while maintaining a compact footprint of 18.36 mm2. Throughout the operational
bandwidth, the mutual coupling between the two slots remains consistently below 20 dB. The research
encompasses comprehensive modeling, manufacturing, and rigorous performance assessment through
simulation and experimentation. The results validate the antenna's capabilities, demonstrating favorable
radiation patterns, a low envelope correlation coefficient (ECC), and a substantial diversity gain. These
attributes position the antenna as a promising candidate for integration into portable UWB devices,
particularly as a sensor component, thus expanding its utility in wireless communication and sensing
applications.