Modern Four-Port MIMO Antenna Design Using Bended Curves for 5G Communications

In this paper, modern four-port Multiple-Input Multiple-Output (MIMO) antenna design using bended curves for 5G communications is presented. The overall dimensions (L-sub x W-sub x H) of the antenna are about 19.5 mm x 19.5 mm x 1.575 mm on Rogers RT/Duroid 5880 substrate with dielectric constant of 2.2 and loss tangent of 0.009. A similar four-element MIMO antenna is designed, and to enhance the parameters of the antenna, circular arcs are loaded. The proposed design can obtain a frequency range from 27.65 to 36.98 GHz which supports 5G communication. The proposed antenna covers an impedance bandwidth (IBW) of 9.33 GHz, and the resonant frequency is 34.60 GHz. The overall peak gain of the antenna is 6.93 dB. Some of the antenna parameters such as envelope correlation coefficient (ECC) < 0.0004, diversity gain (DG) approximate to 10 dB, total active reflection coefficient (TARC) < 0.38, channel capacity loss (CCL) <0.2 bits/Hz and mean effective gain (MEG) is varied in between - 2.80 to - 4 dB. By using HFSS software, the proposed design is designed and simulated.