高介电常数介质基元超表面电磁波传输特性调控机理研究

项目名称： 高介电常数介质基元超表面电磁波传输特性调控机理研究

项目编号： No.11504428

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 王军

作者单位： 中国人民解放军空军工程大学

项目金额： 21万元

中文摘要： 金属基元超表面是一种以人工设计方式调制电磁特性的新型电磁表面。它提供的全新电磁波调控手段在平板透镜聚焦，天线辐射性能提升，飞行器RCS减缩等方面具有广阔的应用前景。介质在很多极端环境下可以替代甚至超越金属实现相应功能。介质基元超表面电磁波传输特性调控机理的研究既具有重要的科学意义，又具有极大的应用价值。本项目分别从电磁场理论和材料科学角度进行介质基元超表面电磁波传输特性调控机理研究，提出采用高介电常数介质材料进行超表面研究的学术思想，利用3D打印与凝胶成型相结合的实验工艺，将介质具备的丰富物理效应用于电磁波传输特性的调控研究。通过项目研究，可望提出系统化的介质谐振电磁理论，阐明介质基元超表面电磁波传输特性调控机理，建立一般设计准则和优化设计方法，最终制作出具有高效能、宽带宽、适合高功率应用、耐受极端环境的介质基元超表面，为实现极化转换、频率选择吸波/透波等电磁波传输特性开辟新的技术途径。

中文关键词： 介电性能；微波介质陶瓷；高介电常数；超表面；传输特性

英文摘要： Metallic based metasurface is a new type of artificial electromagnetic materials, in which the electromagnetic characteristic can be artificially designed. It brings about novel designing philosophy to modulate electromagnetic wave, which can be used in design of functional devices such as flat lens, high gain antennas, and RCS reduction aircraft, etc. Researches in the recent years show that the effects of dielectric can be used to design new types of metasurfaces, which means the dielectric inclusions can be used to replace metallic to achieve required functions. This project focuses on the regulation mechanism of electromagnetic wave transmission characteristics from the view of electromagnetic field theory and material science, respectively. High dielectric material is proposed to study the metasurface. The combining experiment process of 3D printing and gel casting is employed to fabricate dielectric based metasurface. According to the research, a detailed constitute theory of all-dielectric metasurfaces will proposed. The mechanisms to modify the resonant properties, optimization designing scheme will be occurrence. A general devise method will be build according to our research. The practical dielectric metasurface will be realized by the achievement of high efficiency, low loss, broadband, suitable for high power applications and resistant to extreme environment. The works in this project will provide a novel technique route to polarization converters, frequency selective absorbers, frequency selective transmissions, etc.

英文关键词： dielectric properties;microwave ceramic;high permittivity;metasurface;transmission characteristics