低电阻率硅基片上天线的高效率关键技术研究

The currently emerging wireless internet technology applications, such as WiGig and On-Chip Interconnect, are facing a key technical problem: the phenomenon of low efficiency as antenna designed on the silicon substrate with a low resistivity, which has received international attentions. Thus, the research has been an important scientific value. Based on this, several high efficiency technologies for antenna-on-silicon are proposed and studied, through in-depth analysis of antenna efficiency factors and constraints on silicon substrate. Firstly, considering the defect of bi-directional coupling for the silicon feed mechanism, a "director feed" structure is proposed to strengthen the directional coupling, which may contribute to improve the feed efficiency for the antenna-on-silicon. Secondly, considering the advantage of the high directivity radiation of antenna-on-silicon to improve the efficiency of the system, the dielectric resonator's multi-mode characteristics are effectively used to explore the high directivity radiation of antenna-on-silicon. Above all, this project is expected to provide an effective method in improving the feed efficiency and directional radiation of antenna-on-silicon, and exceed of the efficiency limit for the existing antenna-on-silicon. It can also provide the technical support for the application and development of China's wireless Internet.

低电阻率硅基片上天线的低效率现象是当前新兴无线互联技术，如WiGig技术，片上互联技术应用所面临的一个关键技术问题，在国际上受到广泛关注，其相关研究具有重要的科学和应用价值。本项目通过深入分析影响和制约硅基片上天线效率因素的基础上，充分挖掘硅基片上天线效率的提升空间，并研究相应的效率提升技术。一、针对现有硅基片上馈电存在双向耦合激励的缺陷，提出构建一种"引向馈电"结构，通过加强馈电的单向耦合激励，尝试改善硅基片上天线的馈电耦合效率。二、针对硅基片上单元辐射的高方向性在改善系统效率方面的优势，利用介质谐振器天线的多模特性，结合模式选择与组合优化，探索硅基片上单元辐射的高方向性技术。通过本项目研究，可在提高硅基片上天线的馈电效率和实现单元高方向性辐射方面提供有效的方法，突破现有硅基片上天线的效率限制，可为我国无线互联的应用发展提供技术支撑。