Mutual coupling reduction of multiple antenna systems

Jia-yin GUO; Feng LIU; Guo-dong JING; Lu-yu ZHAO; Ying-zeng YIN; Guan-long HUANG

doi:10.1631/FITEE.1900490

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Mutual coupling reduction of multiple antenna systems

Special Feature on Evolution and Innovation of Antenna Systems for Beyond 5G and 6G | Updated：2022-05-19

- Mutual coupling reduction of multiple antenna systems
- 多天线系统的互耦抑制
- Frontiers of Information Technology & Electronic Engineering Vol. 21, Issue 3, Pages: 366-376(2020)
- Affiliations：
  
  Key Laboratory of Antennas and Microwave Technologies, Xidian University, Xi'an 710071, China
  Guangdong Provincial Mobile Terminal Microwave and Millimeter-Wave Antenna Engineering Research Center, College of Information Engineering, Shenzhen University, Shenzhen 518060, China
- Author bio：
  
  Lu-yu ZHAO, E-mail: lyzhao@xidian.edu.cn
- Funds：
- DOI：10.1631/FITEE.1900490
  CLC： TN82
- Received：11 September 2019，
  
  Revised：2020-;2-24，
  
  Published：2020-03
- Accepted：
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Jia-yin GUO, Feng LIU, Guo-dong JING, et al. Mutual coupling reduction of multiple antenna systems[J]. Frontiers of Information Technology & Electronic Engineering, 2020, 21(3): 366-376.
DOI：

Jia-yin GUO, Feng LIU, Guo-dong JING, et al. Mutual coupling reduction of multiple antenna systems[J]. Frontiers of Information Technology & Electronic Engineering, 2020, 21(3): 366-376. DOI： 10.1631/FITEE.1900490.

摘要

多频带多天线系统已成为移动通信系统发展的重要趋势。但是，由于空间较小，天线单元之间往往会发生较强互耦，从而损坏阵列天线的性能。因此，在多输入多输出（MIMO）天线系统中，人们一直追求在天线阵列小型化的基础上，实现较高的隔离度。本文深入研究天线单元间的去耦方法，分析互耦原因及耦合减少的优势。然后，比较分析近期提出的解耦方法。最后，提出由双层短截线组成的超表面结构，以改善沿H面和E面排列的天线的端口隔离。结果表明，所提超表面对紧密放置的天线阵列具有良好去耦效果。

Abstract

A multi-band multi-antenna system has become an important trend in the development of mobile communication systems. However

strong mutual coupling tends to occur between antenna elements with a small space

distorting array antennas' performance. Therefore

in the multiple-input multiple-output (MIMO) antenna system

high isolation based on miniaturization of the antenna array has been pursued. We study in depth the methods of decoupling between antenna elements. Reasons for the existence of mutual coupling and advantages of mutual coupling reduction are analyzed. Then the decoupling methods proposed in recent works are compared and analyzed. Finally

we propose a metasurface consisting of double-layer short wires

which can be applied to improve the port isolation of antennas arranged along the H-plane and E-plane. Results show that the proposed metasurface has good decoupling effect on a closely placed antenna array.

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references

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