The Designer's Guide Community Forum https://designers-guide.org/forum/YaBB.pl Measurements >> Phase Noise and Jitter Measurements >> XOR based frequency doubler output phase noise simulation https://designers-guide.org/forum/YaBB.pl?num=1429061963 Message started by jack2015 on Apr 14th, 2015, 6:39pm

Title: XOR based frequency doubler output phase noise simulation Post by jack2015 on Apr 14th, 2015, 6:39pm Hi all,       I want to simulate the output phase noise of a XOR based frequency doubler. The input is 20MHz signal. I follow the step in the paper"Predicting the Phase Noise and Jitter of PLL-Based Frequency Synthesizers" about simulating divider phase noise. The pss fundamental frequency is 20MHz. There are two crossing points in a 20MHz period. I want to simulate the one crossing point in a 40MHz period. It seems impossible to simulate the 40MHz phase noise in time domain. How should I do to get the accurate phase noise of the 40MHz output?

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