Wideband Low-Profile 8 × 8 MIMO Antenna Based IFA Pair for Ultrathin 5G Smartphones
In this paper, a wideband 8 × 8 MIMO antenna is proposed. The proposed antenna can realize the low profile of 4 mm and the 3.18–4.40 GHz broadband coverage only by adjusting the ground edge structure of the deformed inverted-F antenna. Based on the original antenna, the 5G new radio (NR) band n77 (3...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2022/5281470 |
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| author | Hui Zhou Di Wu Mingmin Zhu Yang Qiu Guoliang Yu Hao-Miao Zhou |
| author_facet | Hui Zhou Di Wu Mingmin Zhu Yang Qiu Guoliang Yu Hao-Miao Zhou |
| author_sort | Hui Zhou |
| collection | DOAJ |
| description | In this paper, a wideband 8 × 8 MIMO antenna is proposed. The proposed antenna can realize the low profile of 4 mm and the 3.18–4.40 GHz broadband coverage only by adjusting the ground edge structure of the deformed inverted-F antenna. Based on the original antenna, the 5G new radio (NR) band n77 (3.3–4.2 GHz) can be covered without adding any structure. In addition, the coupling between the antenna elements has also been improved, decreasing from −9.7 dB to −13.37 dB. A dual-element IFA pair is simulated, fabricated, and measured, the results show the bandwidth of 3.07–4.43 GHz, and the isolation of −13.89 dB can be achieved. An eight-element MIMO antenna is formed by placing four sets of antenna pairs along the two long edges of the substrate. The experimental results show that the bandwidth is 3.18–4.40 GHz, the isolation between any two ports is better than −12.25 dB, and the total efficiency is 61.14%–93.97%. By placing the planar antenna vertically, the ground clearance of the antenna can be reduced to zero, and the performances are similar to the planar MIMO antenna. The proposed MIMO antenna has a good profile and efficient radiation performance compared with the other works, so it has an important application value in ultrathin 5G smartphones. |
| format | Article |
| id | doaj-art-2fcdd64612ee423dae45cdae9f66caf1 |
| institution | Kabale University |
| issn | 1687-5877 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-2fcdd64612ee423dae45cdae9f66caf12025-02-03T01:08:46ZengWileyInternational Journal of Antennas and Propagation1687-58772022-01-01202210.1155/2022/5281470Wideband Low-Profile 8 × 8 MIMO Antenna Based IFA Pair for Ultrathin 5G SmartphonesHui Zhou0Di Wu1Mingmin Zhu2Yang Qiu3Guoliang Yu4Hao-Miao Zhou5Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province, College of Information EngineeringKey Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province, College of Information EngineeringKey Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province, College of Information EngineeringKey Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province, College of Information EngineeringKey Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province, College of Information EngineeringKey Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province, College of Information EngineeringIn this paper, a wideband 8 × 8 MIMO antenna is proposed. The proposed antenna can realize the low profile of 4 mm and the 3.18–4.40 GHz broadband coverage only by adjusting the ground edge structure of the deformed inverted-F antenna. Based on the original antenna, the 5G new radio (NR) band n77 (3.3–4.2 GHz) can be covered without adding any structure. In addition, the coupling between the antenna elements has also been improved, decreasing from −9.7 dB to −13.37 dB. A dual-element IFA pair is simulated, fabricated, and measured, the results show the bandwidth of 3.07–4.43 GHz, and the isolation of −13.89 dB can be achieved. An eight-element MIMO antenna is formed by placing four sets of antenna pairs along the two long edges of the substrate. The experimental results show that the bandwidth is 3.18–4.40 GHz, the isolation between any two ports is better than −12.25 dB, and the total efficiency is 61.14%–93.97%. By placing the planar antenna vertically, the ground clearance of the antenna can be reduced to zero, and the performances are similar to the planar MIMO antenna. The proposed MIMO antenna has a good profile and efficient radiation performance compared with the other works, so it has an important application value in ultrathin 5G smartphones.http://dx.doi.org/10.1155/2022/5281470 |
| spellingShingle | Hui Zhou Di Wu Mingmin Zhu Yang Qiu Guoliang Yu Hao-Miao Zhou Wideband Low-Profile 8 × 8 MIMO Antenna Based IFA Pair for Ultrathin 5G Smartphones International Journal of Antennas and Propagation |
| title | Wideband Low-Profile 8 × 8 MIMO Antenna Based IFA Pair for Ultrathin 5G Smartphones |
| title_full | Wideband Low-Profile 8 × 8 MIMO Antenna Based IFA Pair for Ultrathin 5G Smartphones |
| title_fullStr | Wideband Low-Profile 8 × 8 MIMO Antenna Based IFA Pair for Ultrathin 5G Smartphones |
| title_full_unstemmed | Wideband Low-Profile 8 × 8 MIMO Antenna Based IFA Pair for Ultrathin 5G Smartphones |
| title_short | Wideband Low-Profile 8 × 8 MIMO Antenna Based IFA Pair for Ultrathin 5G Smartphones |
| title_sort | wideband low profile 8 8 mimo antenna based ifa pair for ultrathin 5g smartphones |
| url | http://dx.doi.org/10.1155/2022/5281470 |
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