作者：郭海帆, 陈建华, 陈鑫友, 秦梅, 周云锋

作者单位：西南电子设备研究所, 四川成都 610036

关键词：噪声系数; 噪声功率; 矢量网络分析仪;

摘要：

现有基于矢量网络分析仪进行噪声系数测量的方法必须依赖标准的噪声源,即Y系数测量法。该文提出一种通过在矢量网络分析仪源端口输出连续波信号,分别测量被测件的信号功率与信号加噪声的功率,结合校准结果和功率测量结果计算获得噪声系数的方法。通过建立测量系统的模型和理论的推导,论述该方法的原理和测量过程的噪声校准,提出的方法不需要使用经过校准具有已知超噪比的噪声源,更简单实用。

Noise figure measurement based on power measurement from vector network analyzer

GUO Hai-fan, CHEN Jian-hua, CHEN Xin-you, QIN Mei, ZHOU Yun-feng

Southwest China Research Institute of Electronic Equipment, Chengdu 610036, China

Abstract: The general noise figure measurement method based on vector network analyzer must depend on standard noise source,which is called the Y-factor measurement method. A noise figure measurement method was described in this paper,which used the CW signal from vector network analyzer source, and measured the signal power and the signal and noise power of the DUT respectively, and acquired noise figure by combining calibration results with power results. The principle of this measurement method and the calibration procedure were discussed by building measurement system model and deriving theory. This measurement method without a given ENR (express noise ratio) noise source is easy and practicable.

Keywords: noise figure; noise power; vector network analyzer

2014, 40(6): 35-37,48  收稿日期: 2014-1-9;收到修改稿日期: 2014-3-8

基金项目: 

作者简介: 郭海帆(1976-),女,河南西平县人,高级工程师,硕士,主要从事无线电计量测试等工作。

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