Complex beams play important roles in wireless communications,radar,and satellites,and have attracted great interest in recent years.In light of this background,we present a fast and efficient approach to realize comp...Complex beams play important roles in wireless communications,radar,and satellites,and have attracted great interest in recent years.In light of this background,we present a fast and efficient approach to realize complex beams by using semidefinite relaxation(SDR)optimization and amplitude-phase digital coding metasurfaces.As the application examples of this approach,complex beam patterns with cosecant,flat-top,and double shapes are designed and verified using full-wave simulations and experimental measurements.The results show excellent main lobes and low-level side lobes and demonstrate the effectiveness of the approach.Compared with previous works,this approach can solve the complex beam-forming problem more rapidly and effectively.Therefore,the approach will be of great significance in the design of beam-forming systems in wireless applications.展开更多
基金Project supported by the National Key Research and Development Program of China(Nos.2021YFA1401002,2018YFA070194)the National Natural Science Foundation of China(Nos.62171124,62288101,62225108)+4 种基金the Major Key Project of Peng Cheng Laboratory,China(No.PCL2023AS1-2)the 111 Project,China(No.111-2-05)the Jiangsu Provincial Frontier Leading Technology Basic Research Project,China(No.BK20212002)the Fundamental Research Funds for the Central Universities,China(No.2242023k5002)the Jiangsu Provincial Innovation and Entrepreneurship Doctor Program,China。
文摘Complex beams play important roles in wireless communications,radar,and satellites,and have attracted great interest in recent years.In light of this background,we present a fast and efficient approach to realize complex beams by using semidefinite relaxation(SDR)optimization and amplitude-phase digital coding metasurfaces.As the application examples of this approach,complex beam patterns with cosecant,flat-top,and double shapes are designed and verified using full-wave simulations and experimental measurements.The results show excellent main lobes and low-level side lobes and demonstrate the effectiveness of the approach.Compared with previous works,this approach can solve the complex beam-forming problem more rapidly and effectively.Therefore,the approach will be of great significance in the design of beam-forming systems in wireless applications.
