This paper discussed the error in the measurement of noise figure—The method of Y factor , The error is caused by mismatch of RF attenuater and IF attenuater and the others in the measurement system.
本文讨论了常用的噪声系数测试方法—Y因子法中高频及中频衰减器本身失配和测试系统中其它部分的影响所造成的测试误差。
The noise factor analyzer's operation principle and the basic noise factor measurement method, Y factor method, are described.
论述了噪声系数分析仪的工作原理和噪声系数最基本的测量方法——Y因子法。
The DC charge based and ac based capacitance measurement technologies are analysised from the point of noise performance, which is the key factor to determine the resolution of measurement.
从电路噪声的角度分析了直流充放电法和交流激励法电容测量技术的性能，得出交流法在增加电路复杂度极小的条件下，可获得较高的电容分辨率。
The DC charge based and ac based capacitance measurement technologies are analysised from the point of noise performance, which is the key factor to determine the resolution of measurement.
从电路噪声的角度分析了直流充放电法和交流激励法电容测量技术的性能，得出交流法在增加电路复杂度极小的条件下，可获得较高的电容分辨率。
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