| 摘要: |
| 针对无线通信设备对MIMO天线多频段，结构简单和高隔离度的要求，研究提出了一款用于5G手机的新型双频宽带八单元多输入多输出（MIMO）天线；天线基板采用FR4材质，整体尺寸为150mmx75mmx0.4mm；天线“U”型辐射单元加载在基板的一面，尺寸仅为10mmx3.6mm，每个单元被馈源分为两个部分，分别产生3.5GHz和4.9GHz两种谐振模式；同时，在金属板的一面，通过刻蚀矩形槽的方式，改变电流有效路径和阻断单元间的电流传输，以增加工作频带带宽和减弱单元间的耦合程度；仿真和实测结果表明：当S11小于-6dB时可以覆盖3.3～3.6GHz和4.8～5.1 GHz，天线单元间隔离度优于13.6dB，辐射效率达到67％以上。与传统天线相比，天线在结构，带宽，隔离度等方面具有优势，具有良好的应用前景。 |
| 关键词: 5G 双频段 MIMO天线 隔离度 |
| DOI： |
| 分类号: |
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| A Novel Design of Dual-band Broadband Eight-element Antenna for 5G Mobile Phones |
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MU Weidong1,YANG Ming2,WANG Zhonggen1,LI Mingzhong1, WANG Pan1, ZHANG Jiazheng1
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1.School of Electrical and Information Engineering,Anhui University of Science and Technology, Anhui Huainan 232001,China
2.Department of Electronics and Information Engineering, West Auhui University,Anhui Lu'an 237012,China
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| Abstract: |
| According to the requirements of wireless communication equipment for MIMO antennas with multi-band,simple
structure and high isolation, a new dual-band broadband eight-element multiple input multiple output (MIMO) antenna for
5G mobile phones is proposed. The antenna substrate was made of FR4 and the overall size was 150 mm x75 mmx
0.4 mm. The “U-shaped” radiating element of the antenna was loaded on one side of FR4, and the size was only 10 mm x
3.6 mm. Each element was divided into two parts by the feed source, producing two resonant modes of 3.5 GHz and
4.9 GHz,respectively. At the same time, on one side of the metal plate, the effective paths of the current were changed and
the current transmission between elements was blocked by etching the rectangular slots, so as to increase the working
frequency bandwidth and weaken the coupling degree between elements. Simulation and measured results showed that when
S11 was less than -6dB, the antenna could cover 3.3 GHz-3.6 GHz and 4.8 GHz-5.1 GHz. The isolation among antenna
elements was better than 13.6 dB,and the radiation efficiency was above 67%. Compared with the traditional antennas,this
antenna has advantages in structure, bandwidth and isolation, and has a good application prospect. |
| Key words: 5G dual-band MIMO antenna isolation |
