Transmission type artificial electromagnetic metasurface unit for generating wave beam carrying orbital angular momentum
作者： Shao Shuai , Zhao Yuan , Du Guohong , Sun Xiaofeng
DOI:
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摘要: The invention discloses a transmission-type artificial electromagnetic metasurface unit for generating wave beam carrying orbital angular momentum. Upper and lower surfaces of dielectric substrateare respectively provided with metal layer, the two layers are same in structure arranged an up-and-down corresponding manner. Each layer is composed four patches. patch arc-shaped radian pi/4, one ends patches jointly connected center surface unit, every adjacent spaced by 90 degrees as circle center, bending directions consistent, columnsconnected upper at positions, away from certain distance, advantaged that momentum obviously improved aspects aperture, divergence angle thickness, generated whole achieves higher gain good divergenceangle aperture efficiency under condition smaller thickness.
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