无间隙采样在近载频相位噪声测量中的应用

Application of Gapless Sample in Measurement of Phase Noise Close to a Carrier Signal

摘要:

本地振荡器是雷达或通信系统的核心器件,其相位噪声指标决定了发射机和接收机的性能;通过对常用相位噪声测试方法的比较,分析了这几种方法各自的特点,特别是针对时间频率中高分辨率及无间隙测量能力结合的计数器,研究了其在近载频相位噪声中的测试及数据分析处理方法,该方法在查找和消除高性能振荡器的噪声源中具有较大的价值。

Abstract:

The local oscillator is the core device in radar or communications system, phase noise indicator of which determines the performance of the transmitter and receiver. This paper analysed the characteristics of each of these methods by comparing the common measurement methods of phase noise. This paper Researched the measurement and processing methods of the counter in phase noise close to a carrier signal,the counter combined with high resolution and gapless measure especially. This method has a great value in locating and eliminate the noise source in high performance oscillator.