Metasurface-Based Wideband MIMO Antenna for 5G Millimeter-Wave Systems
Metasurface-Based Wideband MIMO Antenna for 5G Millimeter-Wave Systems
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DOI：
10.1109/access.2021.3110905
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发表时间：
2021-01-01
期刊：
影响因子：
3.9
通讯作者：
Limiti, Ernesto
中科院分区：
文献类型：
--
作者：
Sehrai, Daniyal Ali;Asif, Muhammad;Limiti, Ernesto
本文提出了一种用于毫米波5G通信系统的具有宽带操作的基于超表面的多输入多输出（MIMO）天线。天线系统由以90度移位放置的四个元件组成，以便实现紧凑的MIMO系统，而2x2非均匀超颖表面（共四个元件）放置在MIMO配置的背面，以改善其辐射特性。MIMO天线的整体尺寸为24 x 24 mm（2）而所提出的天线系统的工作带宽范围为23.5- 29.4GHz。通过所提出的MIMO天线实现的峰值增益几乎为7 dB，通过采用2 X 2超颖表面，该峰值增益进一步提高到10.44dB。在整个工作频带内也观察到总效率超过80%。此外，MIMO性能指标，如包络相关系数（ECC），分集增益（DG），和信道容量损失（CCL）进行了分析，表现出良好的特性。所提出的设计的所有仿真都在计算机仿真技术（CST）软件中进行，测量结果与仿真结果吻合良好，使其成为即将到来的5G通信系统的潜在竞争者。
This paper presents a metasurface based multiple-input multiple-output (MIMO) antenna with a wideband operation for millimeter-wave 5G communication systems. The antenna system consists of four elements placed with a 90 degree shift in order to achieve a compact MIMO system while a 2 x 2 non-uniform metasurface (total four elements) is placed at the back of the MIMO configuration to improve the radiation characteristics of it. The overall size of the MIMO antenna is 24 x 24 mm(2) while the operational bandwidth of the proposed antenna system ranges from 23.5-29.4 GHz. The peak gain achieved by the proposed MIMO antenna is almost 7dB which is further improved up to 10.44 dB by employing a 2 x 2 metasurface. The total efficiency is also observed more than 80% across the operating band. Apart from this, the MIMO performance metrics such as envelope correlation coefficient (ECC), diversity gain (DG), and channel capacity loss (CCL) are analyzed which demonstrate good characteristics. All the simulations of the proposed design are carried out in computer simulation technology (CST) software, and measured results reveal good agreement with the simulated one which make it a potential contender for the upcoming 5G communication systems.