Compact elliptic ring 2 × 2 and 4 × 4 MIMO-UWB antenna at 60 GHz for 5G mobile communications applications

In this paper, a new design of compact Multi Input and Multi Output (MIMO) elliptic ring antenna applied to 5G-UWB wireless mobile communications is discussed. There are two designs, first design consists of two radiators both are perpendicular in single side. The second design consists of four radiators and they are perpendicular to each other in single side. Those designs are compact with small size of substrate material Roger 4003 mounted over partial ground with dimensions of 30 × 30 × 0.203 mm 3 for four antenna radiators and 15 × 30 × 0.203 mm 3 for two antenna radiators. The operating frequency of the proposed designs which support MIMO microstrip patch antennas is 60 GHz for Milli-Meter short wave range applied for 5G Ultra-Wide Band (UWB) applications. The simulated results are validated by testing the fabricated antenna model and a good consistency is observed in terms of impedance and radiation characteristics. The diversity performance is also tested and good results are obtained in terms of ECC and DG.