Mutual coupling reduction for monopole MIMO antenna using L-shaped stubs, defective ground and chip resistors

被引：20
作者：
Li, Yanxiu [1 ,2 ]
Bian, Li-an [1 ,2 ]
Xu, Kai-da [3 ,4 ]
Liu, Yu [1 ,2 ]
Wang, Yaokun [1 ,2 ]
Chen, Ranhao [1 ,2 ]
Xie, Shu [1 ,2 ]
机构：
[1] Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410114, Peoples R China
[2] Changsha Univ Sci & Technol, Hunan Prov Higher Educ Key Lab Modeling & Monitori, Changsha 410114, Peoples R China
[3] Univ Elect Sci & Technol China, Yangtze Delta Reg Inst Quzhou, Quzhou 324000, Zhejiang, Peoples R China
[4] Xi An Jiao Tong Univ, Sch Informat & Commun Engn, Xian 710049, Peoples R China
来源：
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2023年 / 160卷
关键词：
MIMO antenna; Mutual coupling reduction; L -shaped stub; Defected ground structure; Chip resistor; GAIN ENHANCEMENT; PERFORMANCE; ARRAY;
D O I：
10.1016/j.aeue.2022.154524
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 paper, a symmetrical and compact monopole multiple input multiple output (MIMO) antenna is designed with two feeding ports. To reduce the mutual coupling between antenna elements, the L-shaped stubs and the defective ground structure (DGS) are used, and additionally the chip resistors are loaded. By optimizing the length of stub, the elements isolation can be improved remarkably. Then, two rectangular slots are etched on the metal ground as DGS to change the path of electric current so as to enhance the isolation further. Also, through loading the chip resistors to control the coupling current on the stubs, the isolation can be strengthened once more. The simulation and measurement results show that this antenna has the mutual coupling of-36 dB, the envelope correlation coefficient (ECC) of 0.002 and the diversity gain (DG) of 9.99 dB at resonance along with the radiant peak gain of 4.03 dBi.
引用
收藏
页数：11
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