Automation-orientated techniques for quality-factor measurement: of high-Tc superconducting resonators

摘要: It is a common technique to use resonators determine the surface resistance of high-temperature superconductors through measurements unloaded Q/sub 0/ factor and resonant frequency. As may change very significantly between normal superconducting states, quality also have large variation two states. thus desirable develop measurement techniques deal with possible in values. Six methods are proposed paper for both one- two-port coupled resonators. These suitable network-analyser-based automated system used determination superconductors. Example using these given. >