In this article, we review recent advances in static and reconfigurable Huygens’ metasurfaces (HMSs) for antenna beamforming and beam steering. First, the fundamental theory of HMSs is summarized along with basic approaches for their physical realization. Subsequently, precise antenna beamforming without feeding networks by utilizing static HMSs is described. This is followed by the description of using HMSs as radomes for extending the scan range of phased arrays. Finally, several strategies are described for realizing reconfigurable HMS by means of electronic control devices.

中文翻译：

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静态和可重构惠更斯的超表面：用于天线波束成形和波束控制

在本文中，我们回顾了用于天线波束成形和波束控制的静态和可重构惠更斯超表面 (HMS) 的最新进展。首先，总结了 HMS 的基本理论及其物理实现的基本方法。随后，描述了利用静态 HMS 在没有馈电网络的情况下进行精确的天线波束成形。随后描述了使用 HMS 作为天线罩来扩展相控阵的扫描范围。最后，描述了通过电子控制设备实现可重构HMS的几种策略。