计量学报
計量學報
계량학보
ACTA METROLOGICA SINICA
2015年
3期
318-323
,共6页
计量学%TEM小室%电磁场探头%校准系统%测量不确定度
計量學%TEM小室%電磁場探頭%校準繫統%測量不確定度
계량학%TEM소실%전자장탐두%교준계통%측량불학정도
Metrology%TEM cell%Electromagnetic field probe%Calibration system%Uncertainty
TEM 小室是一个常用的电磁场发生装置,使用 TEM 小室组建场强探头校准系统,可以对射频电磁场探头进行校准。针对一套300 kHz ~100 MHz 频段的场强探头校准系统进行分析,以磁场探头为例,给出该频段范围内5个频点校准的不确定度评定结果。该不确定度分析过程考虑了 TEM 小室内空间波阻抗,以及探头与小室内标准场之间的相互作用等,对于分析电磁场探头的校准过程具有参考意义。
TEM 小室是一箇常用的電磁場髮生裝置,使用 TEM 小室組建場彊探頭校準繫統,可以對射頻電磁場探頭進行校準。針對一套300 kHz ~100 MHz 頻段的場彊探頭校準繫統進行分析,以磁場探頭為例,給齣該頻段範圍內5箇頻點校準的不確定度評定結果。該不確定度分析過程攷慮瞭 TEM 小室內空間波阻抗,以及探頭與小室內標準場之間的相互作用等,對于分析電磁場探頭的校準過程具有參攷意義。
TEM 소실시일개상용적전자장발생장치,사용 TEM 소실조건장강탐두교준계통,가이대사빈전자장탐두진행교준。침대일투300 kHz ~100 MHz 빈단적장강탐두교준계통진행분석,이자장탐두위례,급출해빈단범위내5개빈점교준적불학정도평정결과。해불학정도분석과정고필료 TEM 소실내공간파조항,이급탐두여소실내표준장지간적상호작용등,대우분석전자장탐두적교준과정구유삼고의의。
The TEM cell is used widely as an electromagnetic field generator,and by employing it,a probe calibration system can be set up to calibrate the radio frequency electromagnetic field probe. A probe calibration system working at 300 kHz ~ 100 MHz is analyzed,and the measurement result uncertainty is presented for a magnetic field probe at five different frequencies in that range. The analysis takes into account the effect of the wave impedance inside the TEM cell,and that of the interaction between the probe and the standard field etc,which can be a useful guide to analyse the electromagnetic field probe calibration process.