9 kHz～50 GHz宽频带小功率校准系统

9 kHz～50 GHz broadband low power calibration system design

为了满足9kHz^50GHz宽频带范围内不同接头功率敏感器的高准确度校准需求,通过对采用热敏电阻座进行量值传递的校准方法和原理进行分析,提出了宽频带系统采用不同接头形式的标准热敏电阻座建立小功率校准装置的必要性,并针对系统中不同接头形式的标准热敏电阻座的连接问题设计了高准确度的多电桥热敏电阻功率计以节约成本。最后通过此系统不同接头形式的功率标准分别对不同接头形式的功率敏感器进行校准实验和数据分析,证明了此系统的优越性能。

In order to meet the high accuracy calibration requirements for the power sensors with different joint forms in 9 kHz-50 GHz broadband, the calibration methods and principles which use thermistor to transfer quality values were analysed, and the necessity of using standard thermistor mounts with different joint forms to build the broadband calibra- tion systerm was put forward. And in order to save the cost , a high accuracy multiple power bridges was designed to solve the connection problems of standard devices with different joint forms in the system. Finally, the calibration experi- ment and data analysis of using the power standard devices with different joint forms to calibrate the power sensors with different joint forms respectively were carried out, the superiority of this broadband system was proved.