A Broadband Dual-Polarized Antenna With Low Profile Using Nonuniform Metasurface

A Broadband Dual-Polarized Antenna With Low Profile Using Nonuniform Metasurface
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一种采用非均匀超表面的低剖面宽带双极化天线

DOI:
10.1109/lawp.2019.2910994
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发表时间:
2019-04
影响因子:
4.2
通讯作者:
Hailiang Zhu
Hailiang Zhu
中科院分区:
计算机科学2区
文献类型:
--
作者:
Hailiang Zhu

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本文提出了一种采用非均匀元表面的新型极低剖面双极化天线。该天线由两个对称放置的振子组成,其辐射体由四块方形金属板构成。该天线设计工作在基站的较低频段(0.69-0.96 GHz)。通过在偶极天线顶上添加超颖表面,天线连同超颖表面的总高度可以减小到0.1 λ0(中心频率的波长),这与偶极天线的正常高度(0.25 λ0)相比低得多。仿真和测量结果表明,在不降低天线性能的情况下实现了高度降低,使所提出的天线成为基站应用的有竞争力的候选天线。
A novel dual-polarized antenna with very low profile using nonuniform metasurface is presented in this letter. The proposed antenna is composed of two dipoles placed crosswise, of which the radiators are formed by four square metal plates. The antenna is designed to work at the lower frequency band (0.69–0.96 GHz) of base station. By adding the metasurface atop the dipole antennas, the overall height of the antenna together with metasurface can be reduced to 0.1 λ0 (wavelength of the center frequency), which is much lower compared to the normal height of a dipole antenna (0.25 λ0). Simulated and measured results show that the height reduction is achieved without degrading the performance of the antenna, making the proposed antenna a competitive candidate for base-station application.
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