Hello All,
I have simulated the phase noise of frequency dividers
in the past numerous times using the method defined in Chapter 6 of "Predicting the Phase Noise and Jitter of PLL-Based Frequency
Synthesizers" by Ken Kundert.
I believe that I could use the same
method to run the phase noise on a frequency multiplier, but I'm having
trouble finding a reference. Do you have experience running
phase noise simulations on frequency multipliers, or know of a reference? Am I running the multiplier phase noise correctly?
I'm
basically following the directions as described in the frequency
divider chapter (Chapter 6) with a couple changes. I'm doubling a
100MHz input to a 200MHz output. The beat frequency is 100MHz, and I'm
doing a relative sweeptype in pnoise and looking at the noise at the 2nd
harmonic. Other than that, I believe the method is the same. I define
a zero crossing in pnoise and look at the noise there. From there, I
calculate the phase noise from the output frequency, the slew rate at
the zero crossing, and the zero-crossing noise.
Thanks in advance for your help,
Dave