物理学报2023，Vol.72Issue(24)：205-213,9.DOI:10.7498/aps.72.20230775
幅值可控的逆反射和镜像反射双通道超表面结构拓扑优化设计
Topology optimization design of dual-channel metasurface structure with controllable amplitude of retroreflection and mirror reflection
摘要
Abstract
For oblique incident electromagnetic waves,the generation of double reflection channels including retroreflection channel is of great significance in improving target recognition performance and navigation performance.In double channel reflection,controlling the ratio of retroreflection to specular reflection is the key to realizing reflection power distribution.In order to realize the control of the proportion of the reflected power in each channel,a topology optimization method for designing the reflective metasurface microstructure with dual channel is proposed in this paper.The implementation mechanism is investigated,physical model of metasurface with dual reflection channel including retroreflection channel is established,and the topology optimization model of metasurface microstructure with specific power ratio of the retroreflection to specular reflection is established.As a numerical example,a dual channel metasurface reflector with a 1:1 ratio of retroreflection power to specular reflection power is designed for a 10 GHz plane wave in the TE mode with a pitch angle of-30°.The designed metasurface exhibits strong directionality in the retroreflective direction,and the reflection amplitudes in both directions are similar.The retroreflective metasurface with the maximum retroreflection ratio is designed.The retroreflection ratio of the designed metasurface is 0.093.There is no specular reflection or other singular reflection,and the strong reflection on the metasurface is concentrated at-30°.The ratio of the main beam power to the total reflection power is 0.900.The simulated and experimental results verify the feasibility of the proposed method.关键词
超表面/双通道/拓扑优化Key words
metasurface/dual channel/topology optimization引用本文复制引用
史鹏飞,马馨莹,向川,赵宏革,李渊,高仁璟,刘书田..幅值可控的逆反射和镜像反射双通道超表面结构拓扑优化设计[J].物理学报,2023,72(24):205-213,9.基金项目
国家自然科学基金(批准号:U1808215)、湖北省教育厅科学研究计划指导项目(批准号:B2022620)和深圳市科技计划(批准号:JSGG20200102155001779)资助的课题.Project supported by the National Natural Science Foundation of China(Grant No.U1808215),the Guidance Project of Scientific Research Program of Department of Education of Hubei Province,China(Grant No.B2022620),and the Program of Science and Technology of Shenzhen,China(Grant No.JSGG20200102155001779). （批准号:U1808215）
