应用于UWB-MIMO无线终端的高性能多天线研究

项目名称： 应用于UWB-MIMO无线终端的高性能多天线研究

项目编号： No.61271027

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 杨雪松

作者单位： 电子科技大学

项目金额： 76万元

中文摘要： 超宽带和多输入多输出相结合的UWB-MIMO技术，具有大容量、高数据传输率等优点。充分发挥系统优势，有赖于高性能的天线系统。在尺寸有限的终端平台上，如何构建信道相关性小的多天线系统，是极具挑战性的基础性课题。大多数超宽带天线不具有频率稳定的辐射特性，而在有限空间内安装多个天线时，单元间的强互耦又进一步影响系统性能。本项目旨在基于特征模理论，研究UWB-MIMO终端天线系统。内容包括：研究超宽带天线辐射机理，探索其实现稳定辐射、多模工作的条件；研究超宽带天线互耦机理，建立互耦分析模型；通过对多天线单元和系统的特征模分析，研究稳定辐射、多模式、可重构的超宽带天线单元，构建结构紧凑的多天线系统；研究应用于无线终端的天线性能。通过理论分析、电磁仿真和实验研究，探索UWB-MIMO终端天线实现良好辐射特性的机理和设计原理，为天线设计提供可靠的理论依据、高效的设计方法及经过验证的若干初始模型。

中文关键词： 天线；特征模；多天线；超宽带；拓扑优化

英文摘要： The UWB-MIMO technology, which is the combination of the ultrawideband technology and the Multi-Input Multi-Output technology, can provide the advantages of both large capacity and high data transmission rate. A high-performance antenna system is crucial for bringing out the full benefits of the system. It is a very challenging basic research topic about how to build a multiantenna system on a terminal platform with a limited size. Most ultrawideband antennas don't have the frequency stability of radiation characteristics. And when multiple antennas are installed in a limited space, the strong mutual coupling between antenna units can further degrade the system performance. This project aims to research the UWB-MIMO terminal antenna system based on the theory of characteristic modes. It includes: by researching the radiation mechanism of ultrawideband antennas, to explore the conditions of realizing stable radiation and multimode of ultrawideband antnnas; by researching the mutual coupling mechanism of ultrawideband antennas, to establish the mutual coupling analysis model; through the characterisitic modes analysis of the multiantenna unit and system, to study the ultrawideband antenna units with stable radiation, multi-mode, or reconfigurable characteristics, and further to build a compact multiantenna system;

英文关键词： antenna；characteristic mode；multiantenna；ultrawideband；topology optimization