Highly Isolated Compact Tri-Band MIMO Antenna with Trapezoidal Defected Ground Plane for 5G Communication Devices

In this paper a compact tri-band MIMO antenna has been proposed for 5G wireless communication devices. The isolation of −20 dB has been obtained between the two input ports using meander line structures and five vias incorporating at different places of the structure. Two rectangular slots have been etched on the radiating patch to further improve antenna performance. The designed antenna provides multiband characteristic in S, C and X frequency bands. Different characteristic parameters such as Envelope Correlation Coefficient, diversity gain, electric field distribution and radiation pattern are also presented and discussed. The overall antenna volumetric size is $42 \times 34 \times 1\ {{\mathrm {mm}}}^{3}$.