摘要
在介绍π网络法石英晶体元件电参数测量原理的基础上，设计了一种频率高达200MHz的石英晶体元件电参数测量系统，分析了石英晶体元件和π网络的等效电路，采用自动网络分析方法计算出石英晶体元件的阻抗，并依次消除了系统误差和测量误差。实验证明，在1～200MHz频率范围内，系统对串联谐振频率测量误差在±1×10^-4以内，重复测量一致性在±0．5×10^6以内。
Based on measurement theory of π network method for electric parameters of quartz crystal units,a measurement system whose frequency is up to 200MHz is designed,and the equivalent circuits of quartz crystal unit and π network are analysed. To improve measurement precision,the automatic network analysis method is used to measure the impedance of quartz crystal units,both system error and measurement error are removed in turn. It was proved that serial resonant frequency measurement repeatability of the system is less than ±0.5× 10^-6,and that measurement error is less than ±1× 10^-6 in frequency scope ranging from 1MHz to 200MHz.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2006年第5期447-450,共4页
Chinese Journal of Scientific Instrument
关键词
石英晶体
π网络法
等效电路
自动网络分析
Quartz crystal units π network method Equivalent circuit Automatic network analysis
