A Novel Electric and Magnetic Gap-Coupled Broadband Patch Antenna With Improved Selectivity and Its Application in MIMO System

被引：77
作者：
Qian, Jian-Feng [1 ]
Chen, Fu-Chang [1 ]
Chu, Qing-Xin [1 ]
Xue, Quan [1 ]
Lancaster, Michael J. [2 ]
机构：
[1] South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Guangdong, Peoples R China
[2] Univ Birmingham, Sch Elect Elect & Syst Engn, Birmingham B15 2TT, W Midlands, England
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2018年 / 66卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Broadband antenna; gap coupling; high isolation; multiple-input multiple-output (MIMO); selectivity; MICROSTRIP ANTENNA; BANDWIDTH; REDUCTION; FILTERS;
D O I：
10.1109/TAP.2018.2860129
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 novel broadband patch antenna with electric- and magnetic-coupled elements and its application in multiple-input-multiple-output (MIMO) system is proposed in this communication. Unlike the conventional gap-coupled patch antennas, the electric and magnetic coupling between adjacent patches is considered and studied. Also, for improved understanding of the broadband nature of the proposed configuration, the phase relationships between patch elements are studied. Two- and three-patch prototypes are designed for validation of the concept, and the three-patch antenna is fabricated and measured showing a good agreement between the measured and simulated results. Considerable selectivity is observed in the results of the three-patch antenna because of the radiation nulls introduced by the electric and magnetic coupling. Apart from the broadband operation, the proposed antenna elements show promise for application in high-isolation MIMO systems due to their inherent band-reject characteristic when they are closely placed. For validation in this application, a four-element MIMO antenna is designed, fabricated, and measured. The measured results agree well with the simulated ones.
引用
收藏
页码：5625 / 5629
页数：5
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