The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl Measurements >> Phase Noise and Jitter Measurements >> Calculting PSD for non periodic data https://designers-guide.org/forum/YaBB.pl?num=1113950400 Message started by HighwayStar on Apr 19th, 2005, 3:40pm |
Title: Calculting PSD for non periodic data Post by HighwayStar on Apr 19th, 2005, 3:40pm In "Predicting the phase noise and jitter of PLL-based Frequency Synthesizers", the matlab script for computing Sphi (delta_f) makes use of the periods.m file to calculate the psd. It makes the basic assumption that the consecutive transitions have approx. same width (period). If my PLL is in a CDR circuit, for which the consecutive transitions are not always periodic, How should i modify the script? I mean to say that my OSC signal is not from a clock, but is actually a data stream which may have a runs of 1 or zero. Thanks. |
The Designer's Guide Community Forum » Powered by YaBB 2.2.2! YaBB © 2000-2008. All Rights Reserved. |