Phased Array 5G Antenna Design with Petal-Shaped Beams and Improved Radiation Coverage

The focus of this study is to introduce a new technique to increase the radiation coverage of a phased array 5G antenna. The structure of the phased array design contains eight compact T-shaped slots with single directors, discrete feeding, and 1×8 linear arrangement on the edge of the mobile-phone PCB. By modifying the size of the employed radiators, the antenna is capable to provide petal-shaped beams at different scanning angles, which improves the radiation coverage of the 5G mobile-phone phased array. The elements of the design are etched on the same layer of the ground plane. The proposed array is highly compact which occupies less than 5 mm (clearance) of the PCB plane. The critical properties of the introduced phased array are investigated. The designed antenna exhibits wide beam-steering, high efficiencies, and sufficient gain levels at 28 GHz, the main 5G band.