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Frontiers of Information Technology & Electronic Engineering
ISSN 2095-9184 (print), ISSN 2095-9230 (online)
2020 Vol.21 No.1 P.62-71
Decoupling methods of MIMO antenna arrays for 5G applications: a review
Abstract: Multiple-input multiple-output (MIMO) technique is a key technique for communication in the future. It can effectively enhance channel capacity. For future fifth-generation (5G) terminals, it is still a challenging task to realize desirable isolation within a compact size. To achieve an acceptable isolation level, many decoupling methods have been developed. We review the most recent research on decoupling methods, including the employment of external decoupling structures, orthogonal modes, and reduction of ground effect, and discuss the development trends of the MIMO array in 5G smartphones.
Key words: MIMO array, 5G smartphone, Decoupling methods
1西安电子科技大学天线与微波技术国家重点实验室，中国西安市，710071
2南特大学综合理工学院电子与数字技术系，法国南特，44306
摘要：多输入多输出（MIMO）技术是未来通信的关键技术，它可以有效增加信道容量。对于未来的第五代（5G）终端，在紧凑的尺寸内实现理想隔离度仍具有挑战性。为取得可接受的隔离度，众多学者已开发许多去耦方法。本文回顾有关去耦方法的最新研究，包括增加去耦结构、使用正交模式和减小地板影响，并讨论5G智能手机中MIMO阵列天线的发展趋势。
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DOI:
10.1631/FITEE.1900466
CLC number:
O441
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On-line Access:
2020-02-27
Received:
2019-09-06
Revision Accepted:
2020-01-06
Crosschecked:
2020-01-18