机械结构因素对谐振腔无载Q值的影响分析  

Influence Analysis of Mechanical Structure Factors on Unloaded Q Value of Resonant Cavity

作　　者：熊长武[1] 

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《电讯技术》2011年第6期146-150,共5页Telecommunication Engineering

基　　金：国家重点基础研究发展计划(973计划)项目(61358)~~

摘　　要：分析了谐振腔不同组件表面、组件间接缝机械结构因素对无载Q值的影响。以表面射频有效电导率、接缝集中接触阻抗为中间电参量建立了机械结构因素影响无载Q值的层次化关系模型,通过仿真分析找出了关键结构因素,得到了表面射频有效电导率、接缝集中接触阻抗对无载Q值的影响关系,给出了更加准确的包含多影响因素权重模型的无载Q值计算公式。The influence relationships between mechanical structure factors such as surfaces and joints in different locations and unloaded Q value of resonant cavity are researched. First, by using the medium electrical parameters about RF effective conductivity and concentrated contact impedance, the hierarchical relationship model of mechanical structure factors and unloaded Q value of resonant cavity is established. Furthermore, based on simulation analysis, the key mechanical structure factors are identified, and the influence relationships between medium electrical parameters and unloaded Q value are discovered. Finaly, a new formula including multi - factors weight model is provided which can be used to compute unloaded Q value more accurately.

关 键 词：谐振腔 机械结构 无载Q值 射频电导率 接触阻抗 

分 类 号：TN629.1[电子电信—电路与系统]