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基于超表面的反射阵天线设计

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基于超表面的反射阵天线设计
A Reflectarray Antenna Design Based on Metasurface
投稿时间:2019-06-27
DOI:10.15918/j.tbit1001-0645.2019.182
中文关键词:反射阵超表面高增益相移范围
English Keywords:reflectarray antennametasurfacehigh gainphase shift range
基金项目:
作者单位
任武北京理工大学 信息与电子学院, 北京 100081
张娅楠北京理工大学 信息与电子学院, 北京 100081
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中文摘要:
提出了一种基于超表面的Ku波段高增益反射阵天线.设计了一种"灯笼折线型"结构结合开口方环结构的超表面单元形式,单元大小为0.3λ0.通过仿真软件进行优化分析,该单元可以实现520°的相移范围且具有良好的相移特性,应用该单元进行了Ku波段高增益反射阵天线的设计,设计了阵面口径大小为160.8 mm×160.8 mm (7.2λ0×7.2λ0)的反射阵天线,采用角锥喇叭进行馈电,该反射阵天线获得了较高的增益以及口径效率.同时在卫星通信的上行链路频段14.0~14.5 GHz以及下行链路频段12.25~12.75 GHz范围内具有较好的性能.对该反射阵列进行了加工测试,测试结果与仿真结果较为吻合,从而验证了该反射阵天线设计的有效性.
English Summary:
A Ku band high gain reflectarray antenna was proposed based on metasurface. Firstly, adopting a "lantern meander-line" structure combined with an open square ring structure, a metasurface element was designed with a unit size of 0.3λ0. The simulation analysis results show that, the unit can achieve a phase shift range 520° and a better phase shift characteristics. And then, a ku band high gain reflectarray antenna was designed with the unit. The reflectarray antenna was designed with a caliber size 160.8 mm×160.8 mm(7.2λ0×7.2λ0), fed by a pyramidal horn. The simulation analysis results show that, the reflectarray antenna can achieve higher gain and aperture efficiency. At the same time, it shows a better performance in the uplink frequency band 14.0~14.5 GHz and the downlink frequency band 12.25~12.75 GHz in the satellite communication. And the practical testing results are agreement with the simulated results, verifying the effectiveness of the design of the reflectarray antenna.
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