摘要
根据电荷泵锁相环系统的传递函数,详细推导了2阶无源环路滤波器的设计参数,准确定义了自然频率、阻尼因子等相关设计参数,给出了相位裕度与阻尼因子的关系表。运用Matlab和Spectre进行联合仿真,结果验证了设计公式的准确性。
Based on the transfer function of the CP-PLL＇s system,a derivation of the second-order passive loop filter was proposed in detail.An accurate definition of the relevant design parameters such as natural frequency,damping factor and other parameters was proposed,and the relationship between phase margin and damping factor was given in a table.The simulation results of Matlab and Spectre verified the accuracy of the design formulas.
出处
《微电子学》
CAS
CSCD
北大核心
2015年第2期184-187,共4页
Microelectronics
关键词
电荷泵锁相环
2阶环路滤波器
传递函数
Charge pump phase-locked loop
Second-order loop filter
Transfer function
