Analysis of Phase Noise in Signal Generator Based on DDS
YU Hong-biao · Modern Radar · 2007
Phase noise is the key character in direct digital frequency synthesizers(DDS) applied in the high stable frequency source.In the paper,phase noise generated by the phase truncation,the amplitude quantization,the performance of DAC and the reference clock is analyzed precisely.The effect of DDS peripheral circuit on phase noise is also analyzed.And the reason of phase noise degradation is discussed.The conclusion is useful for low phase noise DDS circuit design.