Dual-Band Metasurface-Based Decoupling Method for Two Closely Packed Dual-Band Antennas

被引：250
作者：
Liu, Feng [1 ]
Guo, Jiayin [1 ]
Zhao, Luyu [1 ]
Huang, Guan-Long [2 ]
Li, Yingsong [3 ]
Yin, Yingzeng [1 ]
机构：
[1] Xidian Univ, Key Lab Antennas & Microwave Technol, Xian 710071, Peoples R China
[2] Shenzhen Univ, Guangdong Prov Mobile Terminal Microwave & Millim, Shenzhen 518060, Peoples R China
[3] Harbin Engn Univ, Coll Informat & Commun Engn, Harbin 150001, Peoples R China
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2020年 / 68卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Dual band; Mutual coupling; Patch antennas; Wires; Microwave antennas; Current distribution; 5G; antenna array mutual coupling; decoupling; dual-band; metasurface; multiple-input-multiple-output (MIMO); MIMO ANTENNA; ENHANCED ISOLATION; ARRAY; SYSTEM;
D O I：
10.1109/TAP.2019.2940316
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this communication, a metasurface-based decoupling method (MDM) is proposed to reduce the mutual couplings at two independent bands of two coupled multiple-input-multiple-output (MIMO) antennas. The metasurface superstrate is composed of pairs of non-uniform cut wires with two different lengths. It is compact in size and effective in decoupling two nearby dual-band patch antennas that are strongly coupled in the H-plane with the edge-to-edge spacing of only 0.008 wavelength at low-frequency band (LB). The antenna is fabricated and measured and the results show that the isolation between two dual-band antennas can be improved to more than 25 dB at both 2.5-2.7 GHz and 3.4-3.6 GHz bands, while their reflection coefficients remain to be below -10 dB after the metasurface superstrate is introduced. Moreover, the total efficiency is improved by about 15 in the low band and the envelope correlation coefficient (ECC) between the two antennas is reduced from 0.46 to 0.08 at 2.6 GHz and 0.08 to 0.01 at 3.5 GHz. The proposed method can find plenty of applications in dual-band MIMO and 5G communication systems.
引用
收藏
页码：552 / 557
页数：6
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