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本文介绍了取样 PLL 合成器的优点.用 Z 变换分析了Ⅰ型控制环路的稳定性要求和瞬态响应.推导了比较通用的Ⅱ型控制环路类似的表达式,并将 Z 变换分析加以推广,对取样 PLL 合成器的输出相噪谱进行了详述分析.
This paper introduces the advantages of sampling PLL synthesizer.It analyzes the stability requirements and transient response of type Ⅰ control loop by using Z transform.The similar expression of general type Ⅱ control loop is deduced and the Z transform analysis Promotion, sampling PLL synthesizer output phase noise spectrum were analyzed in detail.