Dual-band independent phase control based on high efficiency metasurface [Invited]

• 作者: Jinxing Li Yueyi Yuan Qun Wu Shah Nawaz Burokur Kuang Zhang
• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2021,（10）
• 所属期刊栏目: Diffraction, Gratings, and Holography
• 页码范围: 7-14
• 页数: 8页
• 语种: 英文
• DOI: 10.3788/COL202119.100501

摘要

A general method to realize arbitrary dual-band independent phase control is proposed and demonstrated in this paper.A double-layered C-shape reflective meta-atom is designed to realize independent phase control with high efficiency.As a proof of concept,we propose two functional metasurfaces in the microwave region;the first metasurface performs beam steering in different directions,and the second metasurface generates achromatic beam steering at two distinct frequen-cies.Both simulation and measurement results agree well with the theoretical pre-setting.The maximum measured effi-ciency is 88.7％ and 92.3％ at 6.8 GHz and 8.0 GHz,respectively,for one metasurface,and 91.0％ and 89.8％ at 6.9 GHz and 8.6 GHz,respectively,for the other.