MIMO ANTENNA ARRAY WITH DIRECTIONAL DIAGRAM SPREAD FOR 5G SMARTPHONES
نویسندگان
چکیده
Multiple-input/multiple-output technology can exponentially increase the data transfer rate and spectrum efficiency without any need of increasing transmission power bandwidth. It is most promising to be used in upcoming 5G communications. To more accurate, fourth generation smartphones are set use long-term evolution MIMO operate multi-bands. Therefore, antennas future portable devices such as mobile handsets tablets. A new multiple-input/multiple-output (MIMO) antenna design introduced for smartphones. The proposed contains four pairs double-fed circular-ring resonators located at different edges smartphone printed circuit board (PCB) with an FR-4 substrate a dimension 75 × 150 mm2. elements fed by 50-Ohm microstriplines provide polarisation radiation pattern diversity function due orthogonal placement their feed lines. By inserting rectangular slot under each microstrip feed-line, mutual coupling characteristic ports reduced. good frequency bandwidth (S11 ≤ − 10 dB) 3.3–3.9 GHz has been obtained array. Nevertheless, S11 −6 dB, this value 3.1–4.3 GHz. More than 3 dB realised gain 80% total achieved single element radiator. provides not only sufficient coverage supporting sides mainboard but also diversity. In addition, properties vicinity human-hand/human-head. capable generate dual- or multi-band function. Moreover, compact phased array millimeter-wave (mm-wave) end-fire beams which easily integrated into
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ژورنال
عنوان ژورنال: Vìsnik Hmel?nic?kogo nacìonal?nogo unìversitetu
سال: 2022
ISSN: ['2307-5732']
DOI: https://doi.org/10.31891/2307-5732-2022-315-6-139-142