通过采用国际上先进的实验室比对和能力验证方法，提出了相位噪声测试系统的比对方案。
The comparison method in phase noise measurement system is introduced by means of the advanced way in interlaboratory comparison and proficiency testing.
对基于频谱分析仪的相位噪声测试原理和方法进行了介绍，并对引起测试系统不确定度的因素及其评定方法进行了讨论。
This article introduces the principle and method how to measure phase noise with spectrum analyzer, and discusses the uncertainty factor and its evaluating method.
测试结果显示，该频率源相位噪声较低、杂散低，满足设计和系统使用要求。
The results indicate that the PLL source has low phase noise and stray, and it can meet the requirement of design and system operation.
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