超表面电磁波操控及其在隐身技术中的应用研究

项目名称： 超表面电磁波操控及其在隐身技术中的应用研究

项目编号： No.61471292

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 张安学

作者单位： 西安交通大学

项目金额： 83万元

中文摘要： 人工电磁超表面是由超材料结构单元二维阵列构成的平面，是近年来人工电磁超材料研究的最新发展方向和研究热点之一。通过超表面可实现对电磁波反射和透射的灵活调控，超表面在军事、航天、通信领域具有潜在的应用价值。本项目针对超表面电磁波操控机理及其在隐身技术中的应用问题，研究超表面结构在任意极化波入射情况下，激励表面波的物理过程，推导表面波的准确电磁场分布表达公式，深入揭示超表面操控电磁波的机理；建立宽带/多频带超表面的物理模型，设计、制备具有宽带/多频带性能的超表面，突破超表面带宽窄的技术瓶颈；开展低频宽带薄型超表面隐身技术研究，探索吸波与透波型超表面隐身新物理机制，建立隐身超表面的设计理论、设计技术和制备方法，为发展新型高性能隐身技术提供坚实的理论依据与崭新的技术途径。

中文关键词： 超材料；人工电磁媒质；隐身衣；吸波特性

英文摘要： Metasurface is 2-dimensional periodic structure composed of metamaterial unit cells, and is the latest development trend and a hot topic in the metamaterials research. Metasurfaces can flexibly control the properties of the microwave reflection or transmission. Thus, metasurfaces have the potential applications in military, aerospace and communication. This project focus on the problems of the mechanism of the controlling the microwaves by the metasurfaces and its applications in the stealth technology.This project will explain the physical process of the excitation of the surface wave by the metasurface at arbitrary polarization incidence, derive the accqurate expression of the electromagnetic field distributions, and research the mechanism of the controlling the microwave by metasurface deeply. What's more, this project will physically model the broad/multi band metasurfaces,design and fabricate the broad/multi band metasurfaces to break the band bottlenecks of the metamaterials. More over, this project will study on the low-frequency broadband ultrathin cloaks , explore new mechanism of the absorbor and cloaks based on metasurfaces. Then, theorize, design and fabricate the metasurfaces for stealth. The research of this project will provide solid theoretical background and brand-new technical means for developing novel high-performance stealth technology.

英文关键词： Metamaterials;Artificial Electromagnetic Media;Cloaking;Absorbing Properties