相位梯度超表面结构对电磁波束的操控研究

Study on control of electromagnetic beam by phase gradient metasurface structure

针对相位梯度超表面在灵活操控电磁波方面的潜在应用,设计了一种新型的高阻抗相位梯度超表面结构,该结构通过改变高阻抗表面贴片单元的大小来控制反射波的相位变化。通过数值仿真计算表明,在10GHz频段实现了对电磁波22°的反射偏转。由于厚度薄、重量轻,设计的相位梯度超表面单元拓展了超表面在微波领域的应用,从而为超表面对电磁波束的操控提供了新的方法。

Aiming at the potential application of phase gradient metasurface in the flexible control of electromagnetic wave put forward a new type of high impedance phase gradient metasurface structure .The structure is designed to control the phase change of the reflected wave by changing the size of the high impedance surface patch unit . Numerical simulation results show that the 22 degree reflection deflection of electromagnetic wave is achieved in the 10 GHz frequency band .Because the thin thickness and light weight ,the design expand the application of phase gradient metasurface in microwave field ,and provide a new method for metasurface electromagnetic beam steering .