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

作　　者：Jinxing Li Yueyi Yuan Qun Wu Shah Nawaz Burokur Kuang Zhang 李金星;袁乐眙;吴群;Shah Nawaz Burokur;张狂(Department of Microwave Engineering,Harbin Institute of Technology,Harbin 150001,China;LEME,UPL,Universite Paris Nanterre,F92410 Ville d'Avray,France)

机构地区：[1]Department of Microwave Engineering,Harbin Institute of Technology,Harbin 150001,China [2]LEME,UPL,Universite Paris Nanterre,F92410 Ville d'Avray,France

出　　处：《Chinese Optics Letters》2021年第10期7-14,共8页中国光学快报（英文版）

基　　金：the support from National Natural Science Foundation of China(No.61771172);Open Project of Guangxi Key Laboratory of Wireless Wideband Communication and Signal Processing;Natural Science Foundation of Heilongjiang Province(No.YQ2020F002)。

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 frequencies.Both simulation and measurement results agree well with the theoretical pre-setting.The maximum measured efficiency 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 and8.6 GHz,respectively,for the other.

关 键 词：DUAL-BAND independent phase control MICROWAVE metasurface high efficiency REFLECTION geometric phase 

分 类 号：O441.4[理学—电磁学]