ABSTRACT
Based on engineering application, the influence mechanism of mechanical structure factors such as surfaces and joints in different locations on the coaxial resonant cavity on unloaded Q value is researched in this paper. Firstly, works by comparing the difference between actual coaxial resonator and ideal model, and 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 has been established. Secondly, through simulation analysis, the influence relationship between RF effective conductivity and concentrated contact impedance in different locations on the coaxial resonant cavity and unloaded Q value has been discovered. Finaly, identified the key mechanical structure factors, established a new multi-factors weight model and formula computing unloaded Q value.
Keywords: Resonant cavity, Mechanical structure, Unloaded Q value, RF conductivity, Contact resistance..
