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采用分数分频的单环数字频率合成方法既简单又能得到高分辨率,本文叙述了这种方法的原理,并对50mC～60mC、分辨率为0.1C/S的单环数字频率合成器进行了实验。结果说明这种方法是可行的。一、分数分频数字锁相环原理图如图1所示。
The single-loop digital frequency synthesis method using fractional frequency division is simple and can achieve high resolution. The principle of this method is described in this paper. The single-loop digital frequency synthesizer with 50mC ~ 60mC resolution and 0.1C / Experiment. The result shows that this method is feasible. First, the fractional frequency digital phase-locked loop schematic shown in Figure 1.