An Ultra-Wideband MIMO Antenna Design with Improved Performance Using a Hybrid Substrate
This research paper presents a compact 2×2 multiple-input multiple-output (MIMO) antenna based on Koch fractal geometry for ultra-wideband (UWB) operation. A defected ground structure (DGS) is applied to the ground plane to enhance the impedance bandwidth, while maintaining a compact antenna structure. Moreover, a hybr...