基于电磁幅相调制人工结构材料的波束动态操控机理及实验研究

项目名称： 基于电磁幅相调制人工结构材料的波束动态操控机理及实验研究

项目编号： No.61475160

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： 黄成

作者单位： 中国科学院光电技术研究所

项目金额： 94万元

中文摘要： 电磁辐射器件作为现代通信系统的核心器件，在军事及民用领域发挥着至关重要的作用。波束作为表征器件远场辐射特性的主要手段，在不同的应用领域，对其形状的要求也不尽相同。现有研究发现：超材料能被用于操控电磁波束，但当前大多数研究都只利用了超材料对电磁波位相的调制功能，而忽视了其对电磁波振幅的调制特性，从而使得现有的超材料对波束的操控能力未能得到充分的发挥。针对该问题，项目组提出设计集成振幅和位相调制特性的新型超材料实现对波束动态操控的新思路。本项目将主要研究超材料对电磁波振幅的调制机理，建立基于超材料的电磁波幅度调制物理模型，得到不同电磁波束形状与超材料几何结构和排布形式之间的映射关系。在此基础上，发展基于超材料位相和振幅调制单元的动态操控技术，设计出新型的波束动态调控器件，并开展实验验证。本项目的研究成果将为新型超材料电磁辐射器件的应用奠定坚实的理论和实验基础。

中文关键词： 人工结构材料；电磁波束；动态操控；幅相调制

英文摘要： As a key device in the modern communication system, the radiation device plays the great role in the military and civil fields. The beam is often utilized to evaluate the radiation performance in the far field. In the different application fields, the requirement of the beam performance is also different. It is found that metamaterial has the strong ability in controlling the radiation beam. Most of the research only utilized the phase modulation fucntion of the metamaterial,but ignored its amplitude modulation property. In order to solve this problem, we propose a new method of utilizing metamaterial that can control the amplitude and phase of electromagetic wave to dynamically manipulate the radiation beam. In this project, we mainly investigate the physical mechanism of metamateiral for adjusting the amplitude of eletromagnetic wave, establish the physical model of amplitude modulation based on the metamaterial, and then acquire the close relation between the radiation beam and the geometrical structure of the metamateiral. On this condition, the integrated design of the metamateial would be invesitgated to achieve the phase and amplitude modulation simultaneously, and the corresponding dynamic modulation technique need to be develpoed as well. Finally,some novel radiaton devices with dynamical beam control would be designed and their perfomances are verified by experiment. The proposed project would firmly lay the theoretical and experimental foundation for the application of the metamaterial in the electromagnetic radiation field.

英文关键词： metamaterial;beam;dynamical control;amplitude and phase modulation