非线性人工电磁材料特性及应用研究

项目名称： 非线性人工电磁材料特性及应用研究

项目编号： No.61201030

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 王正斌

作者单位： 南京邮电大学

项目金额： 25万元

中文摘要： 非线性人工电磁材料是指其等效介电常数或磁导率具有随入射场强度变化而改变的一类功能性电磁材料。它进一步扩展了负折射、零折射人工电磁材料的概念，所具备的电磁性质更为丰富，将大大拓展微波、太赫兹及光学器件的设计和开发空间，有可能在应用方面带来突破性进展。本项目主要围绕非线性人工电磁材料的特性，特别是电磁波的谐波产生及传播、参量放大、智能电磁调控等方面开展理论和实验研究，建立基于平面传输线结构的非线性电路模型，通过微带线电路网络加载变容二极管实现非线性人工电磁材料。实际制备具有优良特性的基于非线性传输线型结构的射频与微波波段器件，探索其在电磁波吸收、探测、极化旋转、高效率谐频转化，以及电磁波特征信息调控等技术方面的实际应用。本项目结合申请人近年来在非线性人工电磁媒质方面的研究工作，希望通过对非线性新型人工电磁材料的理论、实验和应用作进一步研究，争取在这一研究领域获得具有原创性自主知识产权的研究成果

中文关键词： 人工电磁材料；非线性人工电磁材料；传输线网络；变容二极管；可调控电磁器件

英文摘要： Nonlinear metamaterial refers to the electromagnetic (EM) functional material that has the effective permittivity and effective permeability depend on the intensity of the applied field or the propagating EM waves, which further expands the concepts of negative refraction and zero-refraction metamaterials. Nonlinear metamaterial has more fancy properties, which will expand the space on the design and development of new microwave components, terahertz components and optical elements. And it may bring breakthrough in metamaterial applications. Here, we are going to explore the characteristics of nonlinear metamaterials, especially for harmonic generations, parametric amplifications, and intelligent electromagnetic regulations, in two aspects: theories and experiments. Firstly, nonlinear circuit models and full wave simulations will be performed based on planar transmission line structures. Then, microstrip line network loaded with varactor diodes will be used to fabricate nonlinear metamaterials. After performing above works, we will further explore the application of nonlinear metamaterials on EM absorption, EM detection, polarization rotation, high-efficiency harmonic conversion, and EM characteristics regulation. The project is based on the applicant's recent reseach work on nonlinear metamaterials. We hope to

英文关键词： metamaterial；nonlinear metamaterial；transmission line network；varactor diode；tunable electromagnetic elements