Sub 6 GHz Smartphone Antenna with Dual-Band Monopole Resonators for 5G Communications

This study represents the schematic and fundamental features of a new MIMO antenna with low-profile elements and suitable characteristics for future cellular communications. Two rows of low-profile hook-shaped ring-monopole antennas with discrete-fed topology are mounted on opposite sides of the board, forming an 8×8 MIMO network. On the same layer as the ground plane, the elements of the suggested design were etched and provided a dual-band function operating at 3.5 and 5.6 GHz of the sub-6 GHz cellular spectrum. The board layout allocates a limited space for the intended array. Due to the resonators’ arrangement, the proposed design can function as dual high-gain beam-steerable phased arrays. In summary, the planned MIMO array is capable of delivering optimal performance, meeting the requirements for future 5G portable devices like smartphones and tablets.