Design and Analysis of High Isolation 3D CPW-fed MIMO Antenna for Ultra Wide Band applications

In this paper, a non-planer or 3D Co-planer waveg-uide (CPW) fed, four-port multi input multi output (MIMO) antenna for 2-20GHz ultra-wideband (UWB) applications is presented. Firstly, a single rectangular antenna element is designed. After that by arranging four such antenna elements in cubic order, a 3D MIMO antenna is designed. The proposed MIMO antenna design shows good isolation between its ports without using any decoupling structure. The diversity parameters of the designed antennas are evaluated by investigating Envelope correlation coefficient (ECC), Diversity gain (DG), Mean effective gain (MEG) and Total active reflection coefficient (TARC) values and all show satisfactory results for the entire (2-20GHz) band. This proposed 3D MIMO antenna design is suitable for WLAN, sub-6GHz, 5G mid band, radar and satellite applications.