A compact four-port UWB MIMO antenna with connected ground and wide axial ratio bandwidth

被引：30
|
作者：
Kumar, Sachin [1 ]
Lee, Gwan Hui [1 ]
Kim, Dong Hwi [1 ]
Mohyuddin, Wahab [1 ]
Choi, Hyun Chul [1 ]
Kim, Kang Wook [1 ]
机构：
[1] Kyungpook Natl Univ, Sch Elect Engn, Daegu 41566, South Korea
来源：
INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES | 2020年 / 12卷 / 01期
基金：
新加坡国家研究基金会;
关键词：
Circularly-polarized; compact; isolation; MIMO; UWB; CIRCULARLY-POLARIZED ANTENNA; DIVERSITY PERFORMANCE; ENHANCED ISOLATION; MONOPOLE ANTENNA; BAND; SYSTEM; INPUT; CSRR;
D O I：
10.1017/S1759078719000874
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 new design method of an ultra-wideband circularly-polarized planar multiple-input-multiple-output (MIMO) antenna is presented in this paper. The proposed MIMO antenna consists of four unit cell antennas, being comprised of a microstrip feed line and a square slotted ground plane. In the proposed unit cell design, a circular stub is protruded from the ground plane strip for achieving circular polarization. The unit cell of the MIMO antenna is optimized by adjusting design parameters. The compact four-port MIMO antenna prototype is designed on the FR4 substrate with the overall dimensions of 45 x 45 x 1.6 mm(3). The proposed four-port MIMO antenna design provides an impedance bandwidth (S-11 < -10 dB) of 112% (3.1-11 GHz) and a 3 dB axial ratio bandwidth of 36% (4.8-6.9 GHz). The performance of the fabricated MIMO antenna shows good agreement between the EM simulation and measurement results.
引用
收藏
页码：75 / 85
页数：11
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