张永亮,蔡垚,刘丽娜,等. 一种基于超表面的方向图可重构天线[J]. 电波科学学报,2021,36(6):918-924. DOI: 10.12265/j.cjors.2021094
      引用本文: 张永亮,蔡垚,刘丽娜,等. 一种基于超表面的方向图可重构天线[J]. 电波科学学报,2021,36(6):918-924. DOI: 10.12265/j.cjors.2021094
      ZHANG Y L, CAI Y, LIU L N, et al. A pattern reconfigurable antenna based on metasurface[J]. Chinese journal of radio science,2021,36(6):918-924. (in Chinese). DOI: 10.12265/j.cjors.2021094
      Citation: ZHANG Y L, CAI Y, LIU L N, et al. A pattern reconfigurable antenna based on metasurface[J]. Chinese journal of radio science,2021,36(6):918-924. (in Chinese). DOI: 10.12265/j.cjors.2021094

      一种基于超表面的方向图可重构天线

      A pattern reconfigurable antenna based on metasurface

      • 摘要: 为了满足日益增长的对多功能天线的需求,提出了一种基于超表面覆层的低剖面可重构天线. 该天线由三部分组成:矩形蘑菇型超表面覆层,缝隙耦合天线和简单的直流偏置控制电路. 通过分别调整两组PIN开关的工作状态,使得天线辐射表面的电流被改变,进而实现辐射方向图的重构. 通过仿真计算和优化,最终确定了天线的最优结构. 实测结果表明:天线可以在四种不同的状态下工作,其xoz面方向图可以在±30°之间切换;四种工作状态的共享−10 dB阻抗带宽为4.2%. 所提出的天线具有低剖面、高增益、低成本、操作简便等特点.

         

        Abstract: In order to meet the increasing demand for multi-functional antennas, a low-profile reconfigurable antenna based on a metasurface coating is proposed. The antenna consists of three parts, namely a rectangular mushroom metasurface coating, a slot-coupled antenna and a simple DC bias control circuit. By separately adjusting the working states of the two groups of PIN switches, the current on the antenna radiation surface is changed, thereby realizing the reconstruction of the radiation pattern. Through simulation calculations and optimizations, the optimal structure of the antenna is finally determined. The actual measurement results show that the antenna can work in four different states, and its xoz-plane pattern can be switched between ±30°. At the same time, the −10 dB impedance bandwidth of the four working states overlap measurement is 4.2%. The antenna has the characteristics of low profile, high gain, low cost, and easy operation.

         

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