Shared aperture metasurface antenna for electromagnetic vortices generation with different topological charges

作     者：He Wang Yong-Feng Li Shao-Bo Qu 王贺;李勇峰;屈绍波

作者机构：Department of Basic SciencesAir Force Engineering UniversityXi'an 710051China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2021年第30卷第8期

页      面：337-344页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science foundation of China(Grant No.61971347) 

主　　题：metasurface electromagnetic vortex antenna orbital angular momentum 

摘      要：Vortex beams carrying orbital angular momentum(OAM)have aroused great interest of both scientific and engineering ***,generating OAM with different topological charges in a shared aperture is regarded as a potential route to expanding the communication capacity,which yet is an academic challenging *** this work,a paradigm of designing metasurface-based shared aperture antenna for generating polarization-dependent vortex beams with distinct topological charges is *** unit cells that can tailor different resonance phase profiles in two orthogonal orientations are used to assemble a metasurface *** a proof-of-concept,a planar reflector antenna is designed with two Vivaldi sources,which can generate x-and y-polarized vortex beams with topological charges of l=-1 and l=-2,*** the simulation results and the measurement results are in good agreement,which demonstrates the feasibility of our ***,this work provides a new route to achieving vortex beams carrying different topological charges in the same frequency band,which may have potential applications in communication systems.