A Four-element Compact Wideband MIMO Antenna for 5G Applications

We present a wideband four-element MIMO antenna having the overall dimension of 25×30×0.8mm3 for fifth generation (5G) applications. The single antenna consist of a rectangular patch element with an inverted F-shaped slot, a chicken neck shaped feedline and a slotted ground plate. Our proposed MIMO system is able to achieve a wide bandwidth of 13.68 GHz that cover three 5G bands (28/37/39 GHz) at S11 smaller than -15 dB. The antenna possesses better isolation of less than -20 dB for the whole interested band. The envelope correlation coefficient is below 0.002 for the whole bandwidth. The antenna has high gain of more than 5.28 dBi and its radiation pattern is omnidirectional. These results make the proposed antenna suitable for forthcoming 5G MIMO wireless applications.