现代频率合成中的分数分频与锁频环

Fractional Divider and Frequency-locked Loop of Modern Frequency Synthesizer

较详细介绍了分数分频锁相环的工作原理和特性 ,以及抑制分数分频锁相环相位调制边带的方法。给出了实验结果 ,并对锁频环的工作原理、相位噪声进行了分析和讨论。

The working theory and performance of fractional-N phase locked loop(FNPLL) are described in detail, and the methods of suppressing FNPLL phase modulation sideband are introduced, and the experimental data is given. Furthermore, the working principle and phase noise of frequency-locked loop are analyzed and discussed in this paper.