论文标题
由3位编码线性极化转换元素及其在RCS降低贴片天线的应用的元表面
A metasurface composed of 3-bit coding linear polarization conversion elements and its application to RCS reduction of patch antenna
论文作者
论文摘要
在本文中，设计了一个基于3位跨表面的低雷达横截面（RCS）贴片天线，该天线由线性极化转换元件组成。首先，3位编码超材料是由八个编码单元细胞的序列构造的，八个编码的单位细胞具有相似的交叉偏振反射振幅响应和分别覆盖0〜2π的梯度反射的相位响应。创建了这些单元电池的等效电路模型（ECM），以同时描述两个线性入射极化的电气行为。然后，将贴片天线集成在3位跨表面上，其中元素以二维线性编码序列放置。金属方形环围绕贴片天线设置，以保护其免受跨表面的干扰。仿真和实验结果都表明，设计的跨表面可以主要减少宽带的天线RC，而天线性能并未显着降解。
In this paper, a low radar cross section (RCS) patch antenna based on the 3-bit metasurface composed of linear polarization conversion elements is designed. At first, 3-bit coding metamaterials are constructed by a sequence of eight coded unit cells, which have a similar cross-polarized reflected amplitude response and gradient reflected phase responses covering 0~2π, respectively. Equivalent circuit models (ECMs) of these unit cells are created to describe their electrical behavior for the two linear incident polarizations at the same time. Then, a patch antenna is integrated on the 3-bit metasurface, of which the elements are placed with a 2-dimensional linear coding sequence. The metal square ring is set around the patch antenna to protect it from the disturbance of metasurface. Both the simulation and experiment results demonstrate that the designed metasurface can primarily reduce the antenna RCS at a broadband, while the antenna performances are not degraded significantly.
