DefinePK

Abstract

A compact ultra wideband (UWB) multiple-input multiple-output (MIMO) slot antenna having a size of 22 x 34 mm2 is proposed for portable device applications. The proposed MIMO antenna consists of two symmetric UWB slot antennas with microstrip-fed placed on the one side of dielectric substrate. To enhance the isolation between the antenna elements, two rectangular slots along with a ground stub are etched on the ground plane, which is on the other side of dielectric substrate. The proposed antenna exhibits a good 2:1 VSWR impedance bandwidth over the entire UWB band from 3.1-10.6 GHz with low mutual coupling less than -20dB, peak gain of 4.3 dBi and efficiency of more than 80%. The measured results are in good agreement with the simulation results and results show that the proposed antenna is good candidate for portable UWB applications.