典型文献
Digital coding transmissive metasurface for multi-OAM-beam
文献摘要：
Orbital angular momentum(OAM)is a phenomenon of vortex phase distribution in free space,which has attracted enormous attention in theo-retical research and practical application of wireless communication systems due to its characteristic of infinitely orthogonal modes.However,traditional methods generating OAM beams are bound to complex struc-ture,large device,multiple layers,complex feed networks,and limited beams in microwave range.Here,a digital coding transmissive metasurface(DCTMS)with a single layer substrate and the bi-symmetrical arrow is proposed and designed to generate multi-OAM-beam based on Pancharat-nam-Berry(PB)phase principle.The 3-bit phase response can be realized by encoding the geometric phase into rotation angle of unit cell for DCTMS.Additionally,the phase compensation of the metasurface is introintroduced to achieve the beam focusing and the conversion from spherical wave to plane wave. According to the digital convolution theorem, the far-field patterns and near-field distributions of multi-OAM-beam with l = -2 modes are adequately demonstrated by DCTMS prototypes. The OAM efficiency and the purity are calculated to demonstrate the excellent multi-OAM-beam. The simulated and experimental results illustrate their performance of OAM beams. The designed DCTMS has profound application in multi-platform wireless communication systems and the multi-channel imaging systems.
文献关键词：
中图分类号：
作者姓名：
Si Jia Li;Zhuo Yue Li;Guo Shai Huang;Xiao Bin Liu;Rui Qi Li;Xiang Yu Cao
作者机构：
Information and Navigation College,Air Force Engineering University,Xi'an 710077,China;State Key Laboratory of Millimeter Waves,School of Information Science and Engineering,Southeast University,Nanjing 210096,China;Shaanxi Key Laboratory of Artificially-Structured Functional Materials and Devices,Air Force Engineering University,Xi'an 710051,China
文献出处：
引用格式：
[1]Si Jia Li;Zhuo Yue Li;Guo Shai Huang;Xiao Bin Liu;Rui Qi Li;Xiang Yu Cao-.Digital coding transmissive metasurface for multi-OAM-beam)[J].物理学前沿,2022(06):183-192
A类：
DCTMS,Pancharat,nam,introintroduced
B类：
Digital,transmissive,metasurface,OAM,Orbital,angular,momentum,phenomenon,vortex,phase,free,space,which,attracted,enormous,attention,retical,research,practical,application,wireless,communication,systems,due,its,characteristic,infinitely,orthogonal,modes,However,traditional,methods,generating,beams,are,bound,complex,struc,ture,large,device,multiple,layers,feed,networks,limited,microwave,range,Here,digital,single,substrate,symmetrical,arrow,proposed,designed,generate,Berry,PB,principle,response,can,realized,by,encoding,geometric,into,rotation,angle,unit,Additionally,compensation,achieve,focusing,conversion,from,spherical,plane,According,convolution,theorem,far,field,patterns,near,distributions,adequately,demonstrated,prototypes,efficiency,purity,calculated,excellent,simulated,experimental,results,illustrate,their,performance,profound,platform,channel,imaging
AB值：
0.531781
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