Divider noise in a PLL

I am running a transient PLL simulation. I check the phase noise and the jitter. I calculate the phase noise as following: I check the delay between the input signal and the feedback signal, subtract its average and then get the rms of the whole thing. I also calculate jitter at the output of the PLL using jitter function. The weird thing: I define the transient noise only for the divider, to check only the effect of the noise of the divider both at phase noise and at jitter of the whole PLL. I find the phase noise(delay between input and feedback signal) and the jitter at the output to have the same value in cadence. Next, I take the divider in a separate testbench, apply ideal input signal, run a pss and pnoise and get the noise plot. I put the values in Matlab and Matlab shows that these "2 jitters", the one between input and feedback signal and the other one at the output, to have different values. I think Matlab calculation is reasonable because the noise of the divider sees a high pass function (modelled in Matlab)  for the jitter between input and feedback signal and a low pass function (modelled in Matlab) when I check at the output of the PLL. What is your opinion about this thing? Why cadence shows that the noise of divider has the same effect when I look at the input (delay between input signal and feedback signal) and when I look at the jitter at the output? Any idea will be very helpful.

Many thanks in advance!

Can you please stop posting the same question multiple times (even if in different forums)? This is against the forum guidelines (please read those). I’ll just join the posts together because otherwise it is confusing and hard to follow, plus leads to duplication of effort (or more likely, nobody will answer at all).

Can you please stop posting the same question multiple times (even if in different forums)? This is against the forum guidelines (please read those). I’ll just join the posts together because otherwise it is confusing and hard to follow, plus leads to duplication of effort (or more likely, nobody will answer at all).