基于信号空间的超宽带天线时域表征和设计方法

The approaching of big data raises higher requirements for wireless communication rate and system bandwidth, which dramatically increases demand for high performance ultra-wideband (UWB) antenna. However, the conventional frequency domain methods are indirect to describe the characterizations of UWB antenna. It is not only difficult to reflect the characteristics of the UWB antenna distinctly in full band, but also hard to obtain the optimal performance of the whole frequency band antenna design based on the frequency domain methods. In this project, the time-domain characterizations and the optimal design of UWB network based on signal space analysis are extended to UWB antenna for investigating the time domain characterizations, optimal design criteria and design methods of UWB antenna. And subsequently these researches are extended to the UWB transmit-receive antenna system and antenna array to establish complete and systematic time domain characterizations and the optimal design methods of UWB antenna, which are complementary against the conventional frequency domain methods including single, transmit-receive antenna system and antenna array. The research from UWB network to UWB antenna, and the self-contained time domain characterizations and design theories of UWB system can provide theoretical and practical foundation for the development and application of UWB technology.

大数据浪潮的来临对无线通信速率和系统带宽提出了越来越高的要求，进而增加了对高性能超宽带天线的需求。然而，传统频域方法对超宽带天线的时域特性表征是间接的，不仅难以清晰地反映超宽带天线在全频带内的特性，而且基于频域方法也难以得到全频带性能最优的天线设计方法。本项目把前期基于信号空间的超宽带网络时域表征和最优设计的工作推广到超宽带天线，研究超宽带天线的特性时域表征和最优设计准则、设计方法，并把该研究推广到超宽带收发天线系统和天线阵列；建立与传统频域方法互补的，涵盖单个、收发天线系统和天线阵列的，完整而系统的超宽带天线的时域特性表征和最优设计方法；形成从超宽带网络到超宽带天线，完善的超宽带系统的时域表征与设计理论，为超宽带技术研究和应用的发展提供理论和方法基础。

新一代通信、物联网形成的大数据浪潮的来临对无线通信速率和系统带宽提出了越来越高的要求，进而增加了对高性能超宽带天线的需求。然而，传统频域方法对超宽带天线的时域特性表征是间接的，不仅难以清晰的反映超宽带天线在全频带内的特性，而且基于频域方法也难以得到全频带性能最优的天线设计方法。本项目把前期基于信号空间的超宽带网络时域表征和最优设计的工作推广到超宽带天线，研究了超宽带天线的特性时域表征和最优设计准则、设计方法，采用归一化欧式距离来综合描述脉冲的幅度和波形畸变，并把该研究推广到了超宽带收发天线系统和天线阵列；建立了与传统频域方法互补的，涵盖单个、收发天线系统和天线阵列的，完整而系统的超宽带天线的时域特性表征和最优设计方法；形成了从超宽带网络到超宽带天线，完善的超宽带系统的时域表征与设计理论，为超宽带技术研究和应用的发展提供理论和方法基础。本项目设计了多款超宽带脉冲天线与器件，并实验验证了所提方法的有效性。.基于项目研究的成果和本项目研究的需要，获得了一件国家发明专利授权，发表了7篇高质量期刊论文，形成了本项目的研究总结报告，培养了2名研究生，形成了具有专业特色的科研方向，圆满的完成了项目的既定目标。