Mutual Coupling Reduction for Dual-Band MIMO Antenna via Artificial Transmission Line

被引：0
作者：
Xiong, Xiang [1 ]
Li, Wen [1 ]
Tan, Xiaohua [2 ]
Hu, Yusheng [3 ]
机构：
[1] Harbin Engn Univ, Coll Informat & Commun Engn, Harbin 150001, Peoples R China
[2] Beijing Univ Posts & Telecommun, Sch Elect Engn, Beijing Key Lab Work Safety Intelligent Monitoring, Beijing 100876, Peoples R China
[3] Jimei Univ, Coll Marine Equipment & Mech Engn, Xiamen 361021, Peoples R China
来源：
IEICE TRANSACTIONS ON ELECTRONICS | 2025年 / E108C卷 / 01期
关键词：
composite right-/left-handed transmission line; cross-shaped TL; dual-band decoupling; mutual coupling; DECOUPLING TECHNIQUE; PORT ISOLATION; SYSTEM; ARRAY; SUPERSTRATE; NETWORK; DESIGN;
D O I：
10.1587/transele.2024ECP5001
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：
A dual-band decoupling strategy via artificial transmission line (TL) for closely spaced two-element multiple-input multiple-output (MIMO) antenna is proposed, which consists of two composite right-/lefthanded TLs for dual-band phase shifting and a cross-shaped TL for susceptance elimination to counteract the real and imaginary part of the mutual coupling coefficient S-21 at dual frequency bands, respectively. The decoupling principle and detailed design process of the dual-band decoupling scheme are presented. To validate the dual-band decoupling technique, a closely spaced dual-band MIMO antenna for 5G (sub-6G frequency band) utilization is designed, fabricated, and tested. The experimental results agree well with the simulation ones. A dual-band of 3.40 GHz-3.59 GHz and 4.79 GHz-4.99 GHz (S-11 & S-22 < -10 dB, S-12 & S-21 < -20 dB) has been achieved, and the mutual coupling coefficient S-21 is significantly reduced 21 dB and 16.1 dB at 3.5 GHz and 4.9 GHz, respectively. In addition, the proposed dual-band decoupling scheme is antenna independent, and it is very suitable for other tightly coupled dual-band MIMO antennas.
引用
收藏
页码：16 / 23
页数：8
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