A Compact Dual-Element MIMO Antenna with High Isolation for Wideband Applications

A two element Multiple Inputs Multiple Outputs (MIMO) antenna which possesses very low mutual coupling with a compact size of 0.32 \({\uplambda }_{0}\) × 0.36 \({\uplambda }_{0}\) has been proposed for wideband application. The MIMO antenna involves two antenna elements with I-shaped isolation structure between them. The antenna has achieved impedance bandwidth ranging from 3.15 GHz to 8.5 GHz which covers C-band (4–8 GHz), WLAN (5.1–5.8 GHz), ISM band (5.2/5.8 GHz) and 5G (3.3–5 GHz). The results of simulation show that the antenna has isolation greater than 20 dB throughout the operating frequency band. The antenna uses FR4 as substrate with thickness 1.6 mm. The antenna has a simple planar structure for which the design is easy with simple process involved.