一种用于5G新无线电应用的紧凑型微近零超材料集成宽带高增益MIMO天线。

A Compact Mu-Near-Zero Metamaterial Integrated Wideband High-Gain MIMO Antenna for 5G New Radio Applications.

作者信息

Hasan Md Mhedi, Islam Mohammad Tariqul, Rahim Sharul Kamal Abdul, Alam Touhidul, Rmili Hatem, Alzamil Ahmed, Islam Md Shabiul, Soliman Mohamed S

机构信息

Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Selangor, Malaysia.

Department of Information and Communication Technology (ICT), Faculty of Engineering, Comilla University, Cumilla 3506, Bangladesh.

出版信息

Materials (Basel). 2023 Feb 20;16(4):1751. doi: 10.3390/ma16041751.

DOI:10.3390/ma16041751

PMID:36837381

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9961439/

Abstract

This article demonstrates a compact wideband four-port multiple-input-multiple-output (MIMO) antenna system integrated with a wideband metamaterial (MM) to reach high gain for sub-6 GHz new radio (NR) 5G communication. The four antennas of the proposed MIMO system are orthogonally positioned to the adjacent antennas with a short interelement edge-to-edge distance (0.19λ at 3.25 GHz), confirming compact size and wideband characteristics 55.2% (3.25-5.6 GHz). Each MIMO system component consists of a fractal slotted unique patch with a transmission feed line and a metal post-encased defected ground structure (DGS). The designed MIMO system is realized on a low-cost FR-4 printed material with a miniature size of 0.65λ × 0.65λ × 0.02λ. A 6 × 6 array of double U-shaped resonator-based unique mu-near-zero (MNZ) wideband metamaterial reflector (MMR) is employed below the MIMO antenna with a 0.14λ air gap, improving the gain by 2.8 dBi and manipulating the MIMO beam direction by 60°. The designed petite MIMO system with a MM reflector proposes a high peak gain of 7.1 dBi in comparison to recent relevant antennas with high isolation of 35 dB in the n77/n78/n79 bands. In addition, the proposed wideband MMR improves the MIMO diversity and radiation characteristics with an average total efficiency of 68% over the desired bands. The stated MIMO antenna system has an outstanding envelope correlation coefficient (ECC) of <0.045, a greater diversity gain (DG) of near 10 dB (>9.96 dB), a low channel capacity loss (CCL) of <0.35 b/s/Hz and excellent multiplexing efficiency (ME) of higher than -1.4 dB. The proposed MIMO concept is confirmed by fabricating and testing the developed MIMO structure. In contrast to the recent relevant works, the proposed antenna is compact in size, while maintaining high gain and wideband characteristics, with strong MIMO performance. Thus, the proposed concept could be a potential approach to the 5G MIMO antenna system.

摘要

本文展示了一种紧凑的宽带四端口多输入多输出（MIMO）天线系统，该系统集成了宽带超材料（MM），以实现低于6 GHz的新无线电（NR）5G通信的高增益。所提出的MIMO系统的四个天线与相邻天线正交放置，单元间边缘到边缘的距离很短（在3.25 GHz时为0.19λ），证实了其紧凑的尺寸和55.2%（3.25 - 5.6 GHz）的宽带特性。每个MIMO系统组件由一个带有传输馈线的分形开槽独特贴片和一个金属柱封装的缺陷接地结构（DGS）组成。所设计的MIMO系统是在一种低成本的FR - 4印刷材料上实现的，其尺寸极小，为0.65λ×0.65λ×0.02λ。在MIMO天线下方采用了一个基于双U形谐振器的独特μ近零（MNZ）宽带超材料反射器（MMR）的6×6阵列，气隙为0.14λ，增益提高了2.8 dBi，MIMO波束方向控制了60°。与近期相关天线相比，所设计的带有MM反射器的小型MIMO系统在n77/n78/n79频段具有7.1 dBi的高峰值增益和35 dB的高隔离度。此外，所提出的宽带MMR改善了MIMO的分集和辐射特性，在所需频段上平均总效率为68%。所述MIMO天线系统具有出色的包络相关系数（ECC）<0.045，更大的分集增益（DG）接近10 dB（>9.96 dB），低信道容量损失（CCL）<0.35 b/s/Hz以及高于 - 1.4 dB的出色复用效率（ME）。通过制造和测试所开发的MIMO结构，验证了所提出的MIMO概念。与近期相关工作相比，所提出的天线尺寸紧凑，同时保持高增益和宽带特性，具有强大的MIMO性能。因此，所提出的概念可能是5G MIMO天线系统的一种潜在方法。