用于5G NR应用的具有增强隔离度的双频段MIMO天线。

Dual-Band MIMO Antenna with Enhanced Isolation for 5G NR Application.

作者信息

Xi Shuqi, Cai Jing, Shen Lingrong, Li Qiangjuan, Liu Gui

机构信息

College of Electrical and Electronic Engineering, Wenzhou University, Wenzhou 325035, China.

出版信息

Micromachines (Basel). 2022 Dec 30;14(1):95. doi: 10.3390/mi14010095.

DOI:10.3390/mi14010095

PMID:36677155

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9862948/

Abstract

A two-port multiple-input and multiple-output (MIMO) antenna with dual-band characteristics operating at the fifth-generation (5G) new radio (NR) sub-6 GHz n7/n38/n41/n79 bands is proposed. The proposed MIMO antenna is composed of two symmetric antenna elements and a defected ground plane. The antenna element consists of an incomplete circular patch with two L-shaped branches. By applying the defected ground structure and the slotted stub, the current distribution on the ground plane is changed to reduce the mutual coupling between the antenna elements. The measured -10 dB reflection coefficients cover 2.34-2.71 GHz and 3.72-5.10 GHz, while the measured isolation is larger than 20 dB at the whole operating frequency band. The paper has investigated different performance parameters in terms of the envelope correction coefficient (ECC), diversity gain (DG), radiation patterns, antenna gain, and efficiency. The proposed MIMO antenna is suitable for 5G applications.

摘要

本文提出了一种双端口多输入多输出（MIMO）天线，它具有双频段特性，工作在第五代（5G）新无线电（NR）低于6 GHz的n7/n38/n41/n79频段。所提出的MIMO天线由两个对称天线单元和一个缺陷接地平面组成。天线单元由一个带有两个L形分支的不完整圆形贴片组成。通过应用缺陷接地结构和开槽短截线，改变接地平面上的电流分布，以减少天线单元之间的互耦。实测-10 dB反射系数覆盖2.34 - 2.71 GHz和3.72 - 5.10 GHz，而在整个工作频段实测隔离度大于20 dB。本文从包络校正系数（ECC）、分集增益（DG）、辐射方向图、天线增益和效率方面研究了不同的性能参数。所提出的MIMO天线适用于5G应用。