AdvaRes
Advanced Member level 4
Hi members,
I calculated the transfert function of the PLL in order to simulate it. My goal is to plot the Vtuning signal. I verified by the Routh creterion that the system is stable by calculatin the closed loop transfert function of the PLL. I also calculated the transfert function of Vtun Unfortunately I obtained a strange representation of Vtuning versus time.
Can someone helpe me to resolve this problem ?
note in the relations that F represents the filter's transfert function.
Open loop transfert function: Gol=Kcp*F*Fvco/N
Vtun transfert function: Vtun=Kcp*F/(1+Gol)
I calculated the transfert function of the PLL in order to simulate it. My goal is to plot the Vtuning signal. I verified by the Routh creterion that the system is stable by calculatin the closed loop transfert function of the PLL. I also calculated the transfert function of Vtun Unfortunately I obtained a strange representation of Vtuning versus time.
Can someone helpe me to resolve this problem ?
note in the relations that F represents the filter's transfert function.
Open loop transfert function: Gol=Kcp*F*Fvco/N
Vtun transfert function: Vtun=Kcp*F/(1+Gol)