论文标题
棋盘蘑菇型跨表脸，用于光束形成应用
Chessboard Mushroom-Type Metasurface for Beamforming Applications
论文作者
论文摘要
研究了可重新配置的微波反射式跨表面（MS），以进行光束形成应用。通过施加外部直流电压来更改反射光束方向，从而在结构上产生反射阶段梯度。研究的MS包括一个类似棋盘的金属贴片阵列，上面放置在接地的介电板上，金属vias将斑块连接到控制线。可调性是通过在金属斑块角之间插入的非线性电容载荷（变量）来实现的。在分析，数值和实验上研究了MS，根据MS元素上的施加的对照电压观察到辐射模式的重塑。结果表明，只有3 x 10元素的基于MS的反射array已经足够在不同方向上重定向光束。
A reconfigurable microwave reflectarray metasurface (MS) is investigated for beamforming applications. The reflected beam direction is changed by applying external dc voltages, which create a reflection phase gradient on the structure. The studied MS comprises a chessboard-like array of metallic patches placed over a grounded dielectric slab with metallic vias connecting the patches to the controlling lines. Tunability is achieved with nonlinear capacitive loads (varactors) inserted between the corners of the metallic patches. The MS is studied analytically, numerically and experimentally, from which reshaping of the radiation pattern is observed according to the applied control voltages on the MS elements. It is shown that the proposed MS-based reflectarray with just 3-by-10 elements is already sufficient to redirect the beam in different directions.
