Bandwidth Enhancement and Isolation Improvement in Compact UWB-MIMO Antenna Assisted by Characteristic Mode Analysis

被引：7
作者：
Li, Wanwan [1 ]
Wu, Ling [2 ]
Li, Shengqiang [3 ]
Cao, Xia [4 ]
Yang, Bing [1 ]
机构：
[1] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan 430000, Peoples R China
[2] Hubei Engn Univ, Sch Phys & Elect Informat Engn, Xiaogan 432000, Peoples R China
[3] 722nd Res Inst China Shipbuilding Ind Corp, Wuhan 430000, Peoples R China
[4] Hubei Normal Univ, Sch Phys & Elect Sci, Huangshi 435000, Peoples R China
来源：
IEEE ACCESS | 2024年 / 12卷
关键词：
Periodic structures; Metamaterials; Antennas; Bandwidth; Impedance; Resonant frequency; MIMO communication; Ultra wideband technology; UWB antenna; MIMO antenna; CMA; isolation; bandwidth enhancement; stepped EBG; SLOT ANTENNA; DESIGN; ARRAY; WLAN; EBG;
D O I：
10.1109/ACCESS.2024.3357629
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents a stepped electromagnetic bandgap(EBG) hosted on the T-shaped stepped stub with an inverted H-shaped slot etched on the ground to enhance bandwidth and improve isolation for a compact UWB-MIMO antenna developed from our previous design. The characteristic mode analysis is used to offer physical insight into the operation phenomena taking place in the evolution of antenna. The proposed antenna has a compact size of 27x 22x0.8 mm and realize bandwidth from 3.07 GHz to 11.1 GHz, keeping the isolation more than 20 dB. Key parameters evaluating the antenna performance like radiation pattern, gain, radiation efficiency above 75% and envelope correlation coefficient below 0.05 are investigated. The simulated and measured results agree well, testifying the proposed MIMO antenna is a suitable candidate for UWB applications.
引用
收藏
页码：17152 / 17163
页数：12
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