28–38 GHz Phased Array 5G Antenna Design for Future Smartphone Applications

Broadband phased array antennas with wide-scan and smart beam-steering are desirable to meet the requirements of future cellular networks. This paper discusses the characteristics of a new beam-steerable phased array design having broad bandwidth for 5G communications. The discussion is focused on smartphones, due to their small size and complexity. The design procedure is straightforward and accomplished on a mainboard of future smart handheld devices. The introduced phased array design involves eight circular-dipole resonators with a $1\times 8$ linear form. The resonators have small sizes with microstrip-line feedings. For -10 dB, the design represents 28–38 GHz covering multiple bands in the 5G spectra.