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在简要介绍一种新型数字频率合成锁相环的基础上,详细分析了此环路对其鉴相器输出端具有特殊性质的寄生信号的抑制。结果表明,此环路的输出寄生边带抑制比是令人满意的。
Based on a brief introduction of a novel digital frequency synthesizer PLL, the suppression of spurious signals with special properties at the output of the phase detector is analyzed in detail. The results show that this loop output parasitic sideband suppression ratio is satisfactory.