分布电感对石英晶体测试精度的影响及补偿
发布时间：2018-07-28 08:31
【摘要】：IEC推荐的石英晶体电参数的(网络零相位测试方法依赖于对测试环境的严格限制来保证其测试精度。在实际应用中,生产现场的测试环境将引入杂散电抗并严重影响其测试精度.为提高测量精度,根据石英晶体的电参模型和理想网络与实际网络模型的差异,理论和实验分析了分布电感对石英晶体谐振频率测试精度的影响,采用电容补偿的方法可以显著减小这一影响。实验结果表明,经过补偿后的石英晶体串联谐振频率的测量精度可达到±2×10~(-6)。
[Abstract]:The zero phase measurement method of quartz crystal recommended by IEC depends on the strict limitation of the testing environment to ensure the accuracy of the measurement. In practical application, stray reactance will be introduced into the test environment of production site and its test accuracy will be seriously affected. In order to improve the measurement accuracy, the influence of distributed inductance on the measurement accuracy of quartz crystal resonance frequency is analyzed theoretically and experimentally according to the difference between the electrical parameter model and the ideal network model of quartz crystal and the actual network model. This effect can be significantly reduced by capacitance compensation. The experimental results show that the measurement accuracy of series resonant frequency of quartz crystal after compensation can reach 卤2 脳 10 ~ (-6).
【作者单位】： 北京信息科技大学仪器科学与光电工程学院;北京市机电系统测控重点实验室;
【分类号】：TN752.2
[Abstract]:The zero phase measurement method of quartz crystal recommended by IEC depends on the strict limitation of the testing environment to ensure the accuracy of the measurement. In practical application, stray reactance will be introduced into the test environment of production site and its test accuracy will be seriously affected. In order to improve the measurement accuracy, the influence of distributed inductance on the measurement accuracy of quartz crystal resonance frequency is analyzed theoretically and experimentally according to the difference between the electrical parameter model and the ideal network model of quartz crystal and the actual network model. This effect can be significantly reduced by capacitance compensation. The experimental results show that the measurement accuracy of series resonant frequency of quartz crystal after compensation can reach 卤2 脳 10 ~ (-6).
【作者单位】： 北京信息科技大学仪器科学与光电工程学院;北京市机电系统测控重点实验室;
【分类号】：TN752.2
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