Mutual coupling reduction of multiple antenna systems

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 (MI...

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Bibliographic Details
Published in:Frontiers of information technology & electronic engineering 2020-03, Vol.21 (3), p.366-376
Main Authors: Guo, Jia-yin, Liu, Feng, Jing, Guo-dong, Zhao, Lu-yu, Yin, Ying-zeng, Huang, Guan-long
Format: Article
Language:English
Subjects:
Antenna arrays
Antennas
Arrays
Bandwidths
Communication
Communications Engineering
Computer Hardware
Computer Science
Computer Systems Organization and Communication Networks
Decoupling method
Electrical Engineering
Electronics and Microelectronics
Energy
Engineering
Instrumentation
Metasurfaces
Methods
Mobile communication systems
Mutual coupling
Networks
Radiation
Reduction
Review
Trends
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Summary: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.
ISSN:2095-9184
2095-9230
DOI:10.1631/FITEE.1900490