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In this study, a new design of multi-layer phased array antenna for millimeter-wave (mm-Wave) fifth generation (5G) mobile terminals is proposed. The proposed linear phased array antenna is designed on four layers of the Rogers RT5880 substrates to operate at 28 GHz which is under consideration for 5G wireless communications. Two identical linear sub arrays can be simultaneously used at different sides of the mobile-phone printed circuit board (PCB) for operation in diversity or multiple-input multiple-output (MIMO) modes. Each sub array contains eight elements of very compact off-center dipole antennas with dimensions of 5.4×0.67 mm 2. The feature of compact design with good beam-steering function makes them well-suited to integrate into the mobile-phone mock-up. The fundamental properties of the proposed antenna have been investigated. Simulations show that the proposed 5G antenna is effective for the required beam-coverage in multiuser MIMO communications.

An insensitive planar phased array antenna with high efficiency function for 5G applications is introduced in this study. 64-elements of compact slot-loop antenna elements have been used to form the 8×8 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 slot-loop resonators. The proposed antenna is designed to operate at 21-23.5 GHz and has a same performance for different values of dielectric constant and loss tangent. It has high-gain, high-efficiency radiation beams at both sides of the substrate and could be used for mobile base station (MBS) applications. The proposed planar array could be integrated with the transceivers on the low-cost printed circuit boards (PCBs) to reduce the manufacturing cost.

The new design and analysis of a wide-scan phased array antenna for the future 5G cellphone platforms is proposed in this manuscript. The antenna is designed on a low-cost FR-4 substrate with 0.8 mm thickness, 4.3 permittivity, and overall size of W sub ×L sub =60×120 mm 2. Eight dipole antenna elements fed by coax-to-microstriplines have been used to form a linear array at the top portion of the cellphone PCB. The antenna is working at 24 GHz and has end-fire radiation beams with a wide-angle scanning capability. The simulated results in terms of different antenna specifications have been presented and discussed.