关键词: 相位噪声, 重合检测, 量化误差, 单边带, 功率谱密度

Abstract:

A method for phase noise measurement is put forward based on the regularity change of the phase difference group and the frequency relationship between the signals. The technology takes advantage of the phase difference relationship affected phase fluctuant change between the periodic signals in nature. The ± 1 count error can be eliminated by building the measuring gate using phase coincidence detection to measure phase difference group synchronization between reference and measured frequency. The comparison and processing can be completed between the same or multiple frequency signals. The phase noise measurement can be realized in this condition so that the carrier frequency is inhibited in order to extract the information on the signal phase noise. The high resolution phase measurement can be realized in the frequency range of 1～190MHz.

Key words: phase noise, coincidence measurements, quantization error, single sideband, power spectral density