Design of compact millimeter wave massive MIMO dual-band (28/38 GHz) antenna array for future 5G communication systems

In this article, a compact millimeter wave massive MIMO dual-band (28/38 GHz) antenna array for future 5G communication systems is proposed. A compact high gain dual-band (28/38) series fed antenna array with size of (13× 20 mm
²
) is nominated to design the massive MIMO antenna system. The simulated results shows that the impedance bandwidth (S11<; -10 dB) is achieved around 28 GHz and 38 GHz with a high gain of 12.07 and 13.46 dB, respectively. The proposed six-sector base station will have 6 sub-sectors (array antennas) each covering a range of 40° and 30° at 28 and 38 GHz, respectively, in azimuth plane (θ).