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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.

The design and performance of mm-wave phased array antenna for 5G mobile broadband communication systems has been provided in this manuscript. The antenna is designed on a N9000 PTFE substrate with 0.787 mm thickness and 2.2 dielectric constant and 65×130 mm 2 overall dimension. Eight elements of bow-tie antennas have been used at the top-edge region of mobile phone PCB. The antenna elements fed by microstrip lines are designed to operate at 17 GHz. The simulated results give good performances in terms of different antenna parameters. In addition, an investigation on the distance between antenna elements has been done.

A new method to design an insensitive antenna with improved performance for fifth generation (5G) systems is proposed in this letter. In order to improve the antenna performance and also eliminate the effect of high‐loss FR‐4 substrate, the resonator of the conventional slot antenna has been converted to the air‐filled slot‐loop structure with a thickness of hsub. Since the main substrate of the resonator is the air, the antenna is insensitive for different values of permittivity, loss tangent characteristics of the substrate. So, for different kinds of substrates, the antenna has a same performance in terms of maximum gain, radiation and total efficiencies. The antenna is designed and fabricated on a low‐cost FR4 substrate and has more than 90% (−0.5 dB) radiation and total efficiencies at 22.25 GHz (center frequency). It has the reflection coefficient (S11) less than −10 dB in the frequency range of 21–23.5 GHz (more than11% fractional bandwidth) which is one of the candidate bands for future 5G communications. The antenna has a very compact size and could be used in mm‐wave phased arrays. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2148–2151, 2016

In this paper, a compact 8×8 phased array antenna for mobile satellite (MSAT) devices is designed and investigated. 64-elements of 22 GHz patch antennas with coaxial-probe feeds have been used for the proposed planar design. The antenna is designed on a low-cost FR4 substrate with thickness, dielectric constant, and loss tangent of 0.8 mm, 4.3, and 0.025, respectively. The antenna exhibits good performance in terms of impedancematching, gain and efficiency characteristics, even though it is designed using high loss substrate with compact dimension (W sub ×L sub =55×55 mm 2). The antenna has more than 23 dB realized gain and-0.8 dB radiation efficiency when its beam is tilted to 0 o elevation. The center frequency of the designed array can be controlled by adjusting the values of the antenna parameters. Compared with the previous designs, the proposed planar phased array has the advantages of simple configuration, low-cost, low-profile, and easy fabrication. Simulations have been done to validate the feasibility of the proposed phased array antenna for MSAT applications.