A Dual band 28GHz and 39GHz 4-port Vivaldi MIMO antenna for 5G wireless devices

A novel compact dual band 4-port Vivaldi MIMO(Multiple Inputs Multi Outputs) antenna is designed for 5G wireless devices. Proposed antenna is resonate at two frequencies 28GHz and 39GHz and has dimensions 22x22x0.8mm
³
. For proposed antenna Rogers RT/Duroid 5880 material is used having 0.8 thickness and 2.2 dielectric material. The bandwidths achieved for two bands are 4.64GHz (26.31-30.95GHz) at 28GHz resonant frequency, 2.69GHz (38.35- 41.04GHz) at 39GHz resonant frequency. The gain achieved at 28GHz is 5.65dB and at 39GHz is 5.53dB. It is possible to achieve MIMO performance parameters such ECC <0.001, DG = 10, CCL <0.4 (bits/s/Hz), TARC< -10dB, and MEG ratio is 1.01. The simulation tool ansys HFSS is used to design the antenna.