A Compact 5G Antenna Array with Ultra-Wide Bandwidth for MM-Wave Smartphone Applications

摘要

In this study, a compact 5G antenna array with ultra-wide impedance bandwidth is proposed for mm-Wave 5G cellular beam-steering. Its structure consists of eight compact folded-dipole antennas with 1×8 linear form placed at top portion of the mobile-phone PCB. The design substrate is a Rogers 0.5 mm RT5880 dielectric. The elements of the design have been etched on the same layer of the ground. The introduced phased array design offers a broad bandwidth of 26-43 GHz covering different 5G candidate bands such as 26, 28, 36, 38, and 40 GHz. Besides, the maximum coupling of the elements is less than -14 dB. Highly compact profile, end-fire beam-steering function, high efficiency, sufficient gain, and wide bandwidth are some of the features for the proposed array antenna which make it suitable for future 5G mobile communications.