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首页> 外文期刊>International Journal of Microwave and Wireless Technologies >A low-profile wideband circularly polarized MIMO antenna with pattern and polarization diversity
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A low-profile wideband circularly polarized MIMO antenna with pattern and polarization diversity

机译：具有模式和极化分集的低调宽带圆极化MIMO天线

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摘要

The present work describes a unique planar low-profile wideband circularly polarized Multiple-Input and Multiple-Output (MIMO) antenna operating in the X-band, with pattern and polarization diversity over the entire axial-ratio bandwidth (ARBW). The design is unique in the sense that a simple grounded stub introduced between two linearly polarized monopole antennas has been used to realize wideband circular polarization, pattern diversity, and high isolation between antennas. The ARBW of the MIMO antenna is 2.45 GHz (8.11-10.56) 3 dB and its impedance matching bandwidth is 3.52 GHz (8.07-11.59). The isolation is better than 20 dB. The antenna can be easily adapted to operate other frequency bands by simple frequency scaling. It has been fabricated on an FR-4 substrate and its performance has been compared against several existing available antennas.
机译：本工作描述了一种独特的平面低剖面宽带圆极化多输入多输出（MIMO）天线，它在X波段工作，在整个轴向比带宽（ARBW）上具有方向图和极化分集。从两个线性极化单极天线之间引入的简单接地短线已用于实现宽带圆极化，方向图分集和天线之间的高度隔离的意义上，该设计是独特的。 MIMO天线的ARBW为2.45 GHz（8.11-10.56）3 dB，其阻抗匹配带宽为3.52 GHz（8.07-11.59）。隔离度优于20 dB。通过简单的频率缩放，可以轻松地使天线适应其他频段的操作。它是在FR-4基板上制造的，其性能已与几种现有的天线进行了比较。

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