The mathematic module of the PLL was built and the sub-circuit such as Phase Detector(PD),Charge Pump(CP),Loop Filter(LF) and Voltage Control Oscillator(VCO) was designed cautiously.

• 主要包括：研究了该锁相环系统建模，完成了鉴相器(PD)、电荷泵(CP)、环路滤波器(LF)以及压控振荡器(VCO)子电路设计。