本文提出了一种新的噪声系数测量方法。

A new method of noise figure measurement is presented.

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本文介绍了噪声系数的几种测量方法，重点分析了目前实际工程和研究中最常用的噪声系数测量方法—Y因子法。

Many emphases are put on analyzing Y-factor method which is the most widely-used noise figure measuring method nowadays in practical engineering and study.

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本文介绍了扩展噪声系数表hp 8970a测量频率范围的方法。

This article introduces the method of extending noise figure meter HP 8970a measurement frequency range.

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