| 2比特激励编码超构表面的辐射与散射调控 |
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| 引用本文： | 李思佳,韩博文,黄国帅,李卓越,曹祥玉.2比特激励编码超构表面的辐射与散射调控[J].电波科学学报,2021,36(6):925-931. |
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| 作者姓名： | 李思佳 韩博文 黄国帅 李卓越 曹祥玉 |
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| 作者单位： | 空军工程大学信息与导航学院,西安710077;东南大学毫米波国家重点实验室,南京210096;空军工程大学信息与导航学院,西安710077 |
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| 基金项目： | 国家自然科学基金（61701523，61801508）；中国博士后基金（2021T140111，2019M650098）；陕西省自然科学基础研究计划项目面上基金（2020JM-350，2017JM6025）；陕西省青年创新团队项目（2020022） |
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| 摘 要： | 超构表面(metasurface, MS)是当前电磁领域研究的热点和前沿，它能够有效调控电磁波. 2比特数字编码MS由于不同形态单元个数的增加，增强了散射和辐射控制的灵活性，为更好的隐身效果、更宽的带宽以及多功能的实现提供了可能. 文中将分形磁电偶极子天线结构和极化控制MS单元有机融合，先构建出激励MS单元，再通过结构变换和数字编码，提出了2比特可激励编码MS，并设计了拓扑结构. 仿真和实验验证了辐射与散射调控的多功能特征. 设计的2比特激励编码MS在天线雷达散射截面(radar cross section, RCS)减缩和未来无线通信系统领域具有潜在的应用价值.
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| 关 键 词： | 编码超构表面 辐射 散射 雷达散射截面 分形结构 |
| 收稿时间： | 2021-04-15 |
Two-bit coding-feeding metasurface with radiation and scattering manipulation |
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| Affiliation: | 1.Information and Navigation College, Air Force Engineering University, Xi’an 710077, China2.State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China |
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| Abstract: | Metasurface is a hotspot and frontier in the field of electromagnetic research, which can effectively regulate electromagnetic waves. Due to the increase of the number of units with different microstructures, the two-bit digital coding metasurface enhances the flexibility of scattering and radiation control, which makes it possible to achieve better stealth effect, wider bandwidth and multi-function. In this paper, the fractal magneto-electric dipole antenna structure and polarization metasurface unit are organically integrated to construct the unit of coding-feeding metasurface. Through the microstructure transformation and digital coding, a two-bit coding-feeding metasurface is proposed, and its topology is designed. The multi-functional characteristics of radiation and scattering manipulation are verified by simulation and experiment. The two-bit coding-feeding metasurface has potential application in radar cross section (RCS) reduction of antenna and wireless communication system in the future. |
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