Dual-Band Eight-Antenna Array Design for MIMO Applications in 5G Mobile Terminals
Dual-Band Eight-Antenna Array Design for MIMO Applications in 5G Mobile Terminals
复制标题
适用于 5G 移动终端中 MIMO 应用的双频八天线阵列设计
DOI：
10.1109/access.2019.2908969
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发表时间：
2019-01-01
期刊：
影响因子：
3.9
通讯作者：
Zhang, Anxue
中科院分区：
文献类型：
--
作者：
Li, Jianxing;Zhang, Xiaoke;Zhang, Anxue
本文提出了一种用于5G移动的终端中的多输入多输出（MIMO）应用的双频八天线阵列。所设计的MIMO天线阵列由8个基于阶跃阻抗谐振器（SIR）的L形缝隙天线组成。通过调整SIR的阻抗比可以获得所需的双谐振，并且通过调谐微带馈线的位置可以确保每个天线单元的良好阻抗匹配。实验结果表明，对于每个天线元件，在长期演进（LTE）频带42（3400-3600 MHz）和LTE频带46（5150-5925 MHz）上获得了大于10 dB的测量回波损耗和大于11.2 dB的测量元件间隔离，其中模拟的总效率大于51%。此外，测量的包络相关系数（ECC）是低于0.1之间的任意两个天线单元，和建议的MIMO天线阵列实现了一个模拟的信道容量高于36.9 bps/Hz的两个工作频带内。此外，MIMO天线阵列可以在存在特定的拟人模型（SAM）头部和人手的情况下保持可接受的辐射和MIMO性能。
This paper proposes a dual-band eight-antenna array for multiple-input and multiple-output (MIMO) applications in 5G mobile terminals. The designed MIMO antenna array comprises eight L-shaped slot antennas based on stepped impedance resonators (SIRs). The required dual-resonance can be obtained by adjusting the impedance ratio of the SIR, and good impedance matching can be ensured for each antenna element by tuning the position of the microstrip feed line. The experimental results show that a measured return loss of higher than 10 dB and a measured inter-element isolation of greater than 11.2 dB have been obtained for each antenna element with a simulated total efficiency of larger than 51% across the long term evolution (LTE) band 42 (3400–3600 MHz) and LTE band 46 (5150–5925 MHz). In addition, the measured envelope correlation coefficient (ECC) is lower than 0.1 between arbitrary two antenna elements, and the proposed MIMO antenna array realizes a simulated channel capacity of higher than 36.9 bps/Hz within both operation bands. Furthermore, the MIMO antenna array can maintain acceptable radiation and MIMO performance in the presence of specific anthropomorphic mannequin (SAM) head and human hands.