本文的目的是研究目前应用最广的电荷泵锁相环的噪声特性以寻找减小环路噪声的电路架构。
The objective of the thesis is to explore the noise sources in PLL and find the proper circuit structures to reduce the noise effects.
许多已有的CO(中心局)dsl调制解调器可以只支持相对较窄的接收频率范围，这会增加估计宽的多的远端环路噪声的难度。
Many existing CO DSL modems may only support a relatively narrow receive frequency range, which will increase the difficulty of estimating the much wider bandwidth far-end loop noise.
并以相位跟踪环路为例分析了热噪声及载体动态性对环路的影响，得出了环路设计的最佳带宽。
The effect of thermal noise and vehicle dynamics on carrier tracking loop are also analyzed, and the optimal bandwidth of carrier tracking loop is obtained.
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