8×8 planar phased array antenna with high efficiency and insensitivity properties for 5G mobile base stations

An insensitive planar phased array antenna featuring high efficiency for 5G applications is introduced in this study. 64 compact slot-loop antenna elements have been used to form the planar array. The antenna is designed on a low cost FR4 substrate and has good performance in terms of gain and efficiency. This property has been achieved by applying a new type of slot-loop resonators in the design. The proposed antenna is designed to operate at 21-23.5 GHz and has consistent performance for different values of dielectric constants and loss tangents. It has high-gain, high-efficiency radiation beams at both sides of the substrate and could be used for mobile base stations (MBS). The proposed planar array could be integrated with the transceivers on the low-cost printed circuit boards (PCBs) to reduce the manufacturing cost.