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首页> 外文期刊>International Journal of Microwave and Wireless Technologies >A compact four-port UWB MIMO antenna with connected ground and wide axial ratio bandwidth
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A compact four-port UWB MIMO antenna with connected ground and wide axial ratio bandwidth

机译：紧凑的四端口UWB MIMO天线，具有接地连接和宽轴比带宽

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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.
机译：提出了一种新的超宽带圆极化平面多输入多输出（MIMO）天线设计方法。拟议的MIMO天线由四个单位单元天线组成，包括微带馈线和方形开槽接地平面。在提出的单元电池设计中，圆形短截线从接地平面条中突出以实现圆形极化。通过调整设计参数可以优化MIMO天线的单位单元。紧凑的四端口MIMO天线原型是在FR4基板上设计的，外形尺寸为45 x 45 x 1.6 mm（3）。拟议中的四端口MIMO天线设计可提供112％（3.1-11 GHz）的阻抗带宽（S-11 <-10 dB）和3％轴向比率带宽36％（4.8-6.9 GHz）。制成的MIMO天线的性能在EM仿真和测量结果之间显示出良好的一致性。

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