In this paper, a novel design strategy that integrates good radiation and broadband low radar cross section (RCS) characteristics based on the concept of metasurface is proposed. The metasurface element adopts an etched cross patch and it directly behaves as a radiating structure. After that, a metasurface-based thinned array antenna A1 and a checkerboard metasurface antenna A2 are designed. The -10 dB operating bandwidth of these two antennas is 13.08–14.92 GHz (13.1%). Compared with the conventional rectangular grid array, A1 and A2 have similar radiation performance along with in-band and out-of-band RCS reduction (RCSR) in any polarized normal incidence. Reasons and merits of different arrangements are analyzed. Simulated and measured results verify the effectiveness of the design strategy.

中文翻译：

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设计具有集成辐射和宽带低雷达截面的超表面的新策略

在本文中，提出了一种基于超表面概念的新型设计策略，该策略将良好的辐射和宽带低雷达截面 (RCS) 特性相结合。超表面元素采用蚀刻交叉贴片，它直接表现为辐射结构。之后，设计了基于超表面的薄化阵列天线A1和棋盘超表面天线A2。这两个天线的 -10 dB 工作带宽为 13.08–14.92 GHz (13.1%)。与传统的矩形网格阵列相比，A1 和 A2 具有相似的辐射性能以及任何偏振垂直入射下的带内和带外 RCS 降低 (RCSR)。分析了不同安排的原因和优点。仿真和测量结果验证了设计策略的有效性。