A Broadband Beam-Steerable Antenna Array for Future Hand-Portable Devices

A new design of a broadband phased array antenna with highly-miniaturized resonators is introduced in this paper for future 5G portable devices. A simple and straightforward approach is followed to design the proposed array in which eight modified circular-ring dipole resonators have been arranged linearly across the top edge of the smartphone board, which is made of low-loss RT5880 material. The suggested array design is exhibiting an impedance bandwidth from 24 to 39 GHz (more than 15 GHz) supporting several candidate bands of the 5G spectrum such as 26, 28, 32, 36, and 38 GHz. In addition to its wide operation band and high-efficiency characteristics, the introduced array offers several promising features such as a highly miniaturized profile, well-defined end-fire radiation, and wide beam steering, as well as sufficient efficiency and gain levels which verify the potential of the suggested phased array design for use in 5G smartphones.