| 张范然,杨福慧,李运胜,印小忠,杜成珠.基于5G与Wi-Fi 6E应用的三频MIMO天线设计[J].电子测量与仪器学报,2025,39(4):114-121 |
| 基于5G与Wi-Fi 6E应用的三频MIMO天线设计 |
| Design of tri-band MIMO antenna based on 5G and WiFi 6E applications |
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| DOI： |
| 中文关键词: MIMO天线 共面波导 三频特性 5G频段 小型化 |
| 英文关键词:MIMO antenna coplanar waveguide tri band characteristics 5G band miniaturization |
| 基金项目:国家自然科学基金（62202286）项目资助 |
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| Author | Institution |
| Zhang Fanran | Shanghai University of Electric Power, Shanghai 200082, China |
| Yang Fuhui | CETC Shanghai Microwave Communication Co., Ltd., Shanghai 201815, China |
| Li Yunsheng | CETC Shanghai Microwave Communication Co., Ltd., Shanghai 201815, China |
| Yin Xiaozhong | CETC Shanghai Microwave Communication Co., Ltd., Shanghai 201815, China |
| Du Chengzhu | Shanghai University of Electric Power, Shanghai 200082, China |
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| 中文摘要: |
| 针对目前多频带多输入多输出（multiple-input multiple-output，MIMO）天线仍存在的尺寸较大、端口隔离较差、抗干扰能力弱等问题，设计了一款能应用于5G n78/n79、WiFi 6E频段的三频MIMO天线。该天线由挖槽后的菱形贴片及梯形地板组成，且结合了半圆形结构和对称倒L形枝节的创新设计，这种设计不仅实现了所需的三频特性，还有效控制了天线的尺寸，使其适应更为紧凑的应用需求。该天线采用共面波导（coplanar waveguide，CPW）的馈电方式，具有易于与其他微波电路集成的优点。通过将单元天线正交放置，且无需隔离枝节，使得MIMO天线在所需频段内的端口隔离度均大于25 dB。对仿真天线进行加工并测试，实测结果表明，当回波损耗小于-10 dB时，天线的阻抗带宽为3.28~3.67、4.63~5.01及5.67~7.65 GHz，适用于5G n78/n79、WiFi 6E频段。最大实测增益可达到4.7 dB，包络相关系数（envelope correlation coefficient，ECC）小于0.001，同时分集增益（diversity gain，DG）大于9.999 9，分集性能良好。实测结果与仿真结果高度一致，验证了设计的有效性和准确性。综合考虑该天线的尺寸优势、良好的隔离度和出色的分集性能，所提出的三频MIMO天线在5G与WiFi 6E通信系统中展现出极大的应用前景，能够满足未来无线通信日益增长的需求，推动无线技术的发展与创新。 |
| 英文摘要: |
| Aiming at the problems of large size, poor port isolation and weak anti-interference ability of multi-band multiple-input multiple-output (MIMO) antennas, a tri band MIMO antenna which can be applied to 5G n78/n79 and WiFi 6E bands is designed. The antenna is composed of a slotted diamond patch and a trapezoidal floor, and combines the innovative design of a semi-circular structure and a symmetrical inverted L-shaped branch. This design not only realizes the required triple-frequency characteristics, but also effectively controls the size of the antenna to adapt to more compact application requirements. The antenna is fed by coplanar waveguide (CPW), which has the advantage of easy integration with other microwave circuits. By placing the unit antenna orthogonally and without isolating branches, the port isolation of the MIMO antenna in the required frequency band is greater than 25 dB. The simulated antenna is processed and tested. The measured results show that when the return loss is less
than-10 dB, the impedance bandwidth of the antenna is 3.28~3.67, 4.63~5.01 and 5.67~7.65 GHz, which is suitable for 5G n78/n79, WiFi 6E band. The maximum measured gain can reach 4.7 dB, the envelope correlation coefficient (ECC) is less than 0.001, and the diversity gain (DG) is greater than 9.999 9. The diversity performance is good. The measured results are highly consistent with the simulation results, which verifies the effectiveness and accuracy of the design. Considering the size advantage, good isolation and excellent diversity performance of the antenna, the triple-band MIMO antenna proposed in this paper shows great application prospects in 5G and WiFi 6E communication systems, which can meet the growing demand of future wireless communication and promote the development and innovation of wireless technology. |
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