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。