Abstract
The focus of this manuscript was to propose a new phased array antenna design for the fifth generation (5G) mobile platforms. Eight elements of compact Quasi-Yagi antennas were placed on the top portion of smartphone printed circuits board (PCB) to form a beam-steerable phased array design. The −10 dB impedance-bandwidth of proposed 5G smartphone antenna spans from 25 GHz to 27 GHz providing 2 GHz bandwidth with less than −16 dB mutual coupling function. A coax-to-microstripline with a truncated crown of vias around the coaxial cable was used as a feeding mechanism for each radiation element. An Arlon Ad 350 substance with properties of ε = 3.5, δ = 0.003, and h = 0.8 mm was chosen as the antenna substrate. The proposed phased array antenna provides wide-angle scanning of 0°~75° with more than 10 dB realized gain levels. For the scanning angle of 0°~60°, the antenna array provides more than 90% (−0.5 dB) radiation and total efficiencies. In addition, the specific absorption rate (SAR) function and radiation performance of the design in the presence of the user-hand/user-hand have been studied. The results validate the feasibility of the proposed design for use in the 5G handheld devices. Furthermore, using the presented Quasi-Yagi elements, the radiation properties of 2 × 2, 4 × 4, and 8 × 8 planar arrays were studied and more than 8.3, 13.5, and 19.3 dBi directivities have been achieved for the designed planar arrays. The results show that the designed arrays (linear & planar) satisfy the general requirements for use in 5G platforms.
Highlights
One of the issues expected for the fifth generation (5G) cellular communications is the move to the millimeter-Wave bands [1], which has received great attention from many researchers and industry
The antenna element was designed using Ansoft high frequency frequency structure simulator (HFSS) software [20], and its S11 result has been added to Figure 2
Transparent and top views of a linear phased with the Quasi-Yagi antenna elements arranged with a distance of da=low
Summary
One of the issues expected for the fifth generation (5G) cellular communications is the move to the millimeter-Wave (mm-Wave) bands [1], which has received great attention from many researchers and industry. Compact antennas arranged as an array can be employed at different portions of a smartphone PCB to form linear phased arrays with high gain and directional radiation beams. PCB to form phased arrays space of 5G cellular communications, end-fire antennas, as horn, antennas, Yagi-Uda,such. The Quasi-Yagi antenna a widely antenna with high gain end-fire radiation patterns. Its features, such as compact size,ishigh gain,used and easy integration. Configuration consistsantenna of a reflector and a driven element with alonghigh with gain one or multiple directors It can is a widely used antenna end-fire radiation patterns. 4, and radiation elements were designed and high directivity radiation beams have been array configurations of the Quasi-Yagi antenna with 2 × 2, 4 × 4, and 8 × 8 radiation elements were obtained. Weresoftware carried out using computer simulation technology (CST) software [18]
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