Non-linear behaviour of charge-pump phase-locked loops
Non-linear behaviour of charge-pump phase-locked loops
复制标题
电荷泵锁相环的非线性行为
DOI：
10.5194/ars-8-161-2010
复制
发表时间：
2010
影响因子：
0.4
通讯作者：
U. Hilleringmann
中科院分区：
文献类型：
--
作者：
C. Wiegand;C. Hedayat;U. Hilleringmann
抽象的。电荷泵锁相环（CP-PLL）的模拟和数字混合结构的分析是建模和仿真中的一个挑战。在大多数情况下，系统的设计和特点是使用其连续线性模型或其离散线性模型忽略其非线性切换行为。即，时变模型通过使用其平均动态的时不变表示来近似。取决于使用哪种相位检测器，这些近似的有效性范围是不同的。在这里，提出了一种基于系统事件驱动特征的卓越表征和仿真技术，融合了系统的逻辑和模拟固有特征。特别分析了高级非线性闭锁过程和闭锁死区。
Abstract. The analysis of the mixed analogue and digital structure of charge-pump phase-locked loops (CP-PLL) is a challenge in modelling and simulation. In most cases the system is designed and characterized using its continuous linear model or its discrete linear model neglecting its non-linear switching behaviour. I.e., the time-varying model is approximated by a time-invariant representation using its average dynamics. Depending on what kind of phase detector is used, the scopes of validity of these approximations are different. Here, a preeminent characterization and simulation technique based on the systems event-driven feature is presented, merging the logical and analogue inherent characteristics of the system. In particular, the high-grade non-linear locking process and the dead-zone are analyzed.