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用于5G Sub 6GHz应用的孔径馈电介质谐振器MIMO天线中的增强隔离

Enhanced isolation in aperture fed dielectric resonator MIMO antennas for 5G Sub 6 GHz applications.

作者信息

Patel Arpita, Upadhyaya Trushit, Girjashankar Pandey Rajat, Swati M V, Kumar Om Prakash

机构信息

Electronics and Communication Department, Chandubhai S. Patel Institute of Technology, Charotar University of Science & Technology, Changa, Gujarat, India.

Electronics and Communication Department, Government Engineering College, Gandhinagar, Gujarat, India.

出版信息

Sci Rep. 2025 Mar 27;15(1):10653. doi: 10.1038/s41598-025-95040-8.

DOI:10.1038/s41598-025-95040-8
PMID:40148573
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11950170/
Abstract

A quad-port dielectric resonator antenna (DRA) is proposed for sub-6 GHz 5G MIMO applications, featuring high isolation, dual-band operation, and enhanced efficiency. The antenna is designed using electromagnetic coupling with a triangular patch to excite the square dielectric resonators (DRs) at targeted resonance modes (TE and TE), achieving broadband and polarization diversity. The proposed structure exhibits self-isolation above 20 dB without requiring additional decoupling structures. The use of Alumina (εr = 9.9, tanδ = 0.0001) ensures low loss, high efficiency (88.9% and 93.8%), and strong radiation performance, with peak gains of 9.12 dBi and 8.58 dBi at 3.72 GHz and 4.75 GHz, respectively. The full ground plane and optimized spatial placement further contribute to reduced mutual coupling and improved diversity performance, achieving an envelope correlation coefficient (ECC) of 0.042 and channel capacity loss (CCL) below 0.2 bits/s/Hz. The proposed antenna's measured results align closely with simulations, confirming its suitability for high-performance 5G MIMO communication systems.

摘要

本文提出了一种用于低于6GHz 5G MIMO应用的四端口介质谐振器天线（DRA），其具有高隔离度、双频段工作和更高的效率。该天线采用电磁耦合与三角形贴片设计，以在目标谐振模式（TE和TE）下激发方形介质谐振器（DR），实现宽带和极化分集。所提出的结构在无需额外去耦结构的情况下，自隔离度高于20dB。使用氧化铝（εr = 9.9，tanδ = 0.0001）可确保低损耗、高效率（88.9%和93.8%）以及强辐射性能，在3.72GHz和4.75GHz时的峰值增益分别为9.12dBi和8.58dBi。完整的接地平面和优化的空间布局进一步有助于降低互耦并改善分集性能，实现包络相关系数（ECC）为0.042且信道容量损失（CCL）低于0.2比特/秒/赫兹。所提出天线的测量结果与仿真结果紧密吻合，证实了其适用于高性能5G MIMO通信系统。

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本文引用的文献

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Advances in MIMO Antenna Design for 5G: A Comprehensive Review.5G 多输入多输出（MIMO）天线设计进展：全面综述
Sensors (Basel). 2023 Jul 12;23(14):6329. doi: 10.3390/s23146329.
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Design, Challenges and Developments for 5G Massive MIMO Antenna Systems at Sub 6-GHz Band: A Review.6GHz以下频段5G大规模多输入多输出（MIMO）天线系统的设计、挑战与发展：综述
Nanomaterials (Basel). 2023 Jan 28;13(3):520. doi: 10.3390/nano13030520.
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Four-Port Dual-Band Multiple-Input Multiple-Output Dielectric Resonator Antenna for Sub-6 GHz 5G Communication Applications.
用于6GHz以下5G通信应用的四端口双频多输入多输出介质谐振器天线
Micromachines (Basel). 2022 Nov 19;13(11):2022. doi: 10.3390/mi13112022.
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Massive metamaterial system-loaded MIMO antenna array for 5G base stations.大规模超材料系统加载的 5G 基站多输入多输出天线阵列。
Sci Rep. 2022 Aug 22;12(1):14311. doi: 10.1038/s41598-022-18329-y.
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A CPW fed quad-port MIMO DRA for sub-6 GHz 5G applications.一种用于低于 6GHz 5G 应用的 CPW 馈电四端口 MIMO DRA。
PLoS One. 2022 Jun 10;17(6):e0268867. doi: 10.1371/journal.pone.0268867. eCollection 2022.
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Integrated LTE and Millimeter-Wave 5G MIMO Antenna System for 4G/5G Wireless Terminals.用于4G/5G无线终端的集成LTE和毫米波5G MIMO天线系统
Sensors (Basel). 2020 Jul 15;20(14):3926. doi: 10.3390/s20143926.