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Design >> Analog Design >> Phase noise
https://designers-guide.org/forum/YaBB.pl?num=1328513268

Message started by lokesh gandhi on Feb 5^th, 2012, 11:27pm

Title: Phase noise
Post by lokesh gandhi on Feb 5^th, 2012, 11:27pm

Hi all,
Can some body help me out understand what is phase noise and peaking in pll...?

Thanks,
Loks

Title: Re: Phase noise
Post by raja.cedt on Feb 6^th, 2012, 12:46am

http://www.chic.caltech.edu/Publications/phase_tutor.pdf

basically phase noise is single side band noise to carrier ratio. It's difficult to explain entire theory, in fact you can refer the above pap and ask Questions.

Thanks,
Raj.

Title: Re: Phase noise
Post by lokesh gandhi on Feb 6^th, 2012, 8:50am

Thanks raj.

Title: Re: Phase noise
Post by Kevin Aylward on Jul 6^th, 2013, 2:07am

I would not really refer to that referenced paper as a tutorial on phase noise, especially for assumed beginners. That paper is a tutorial on the HL-LTV method of analyzing phase noise specifically in oscillators, and is rather technically advanced. It is also wrong, having been superseded by techniques that actually do correctly predict up-converted phase noise. e.g. SpectreRF. I would suggest my own tutorial for the basics of what phase noise is
http://www.kevinaylward.co.uk/ee/phasenoise/PhaseNoiseTutorial.xht, :) and http://www.kevinaylward.co.uk/ee/phasenoise/LTV.xht for what is wrong in the HL-LTV approach.

Title: Re: Phase noise
Post by aaron_do on Jul 7^th, 2013, 5:57pm

Hi Kevin,

the articles on your website are interesting. However, the equations are difficult to read as there doesn't seem to be any formatting on them...for example,

Φ(t)= ω 0 R C 0 (1+ k v1 v n + k v2 v n 2 )− ω 0 3 R 3 C 0 3 3 (1+ k v1 v n + k v2 v n 2 ) 3

Is that by design, or is there some other way to read the page so that I can see the equations in the proper formatting?

thanks,
Aaron

EDIT:

seems like I need to either install firefox, or mathplayer for IE, but my work computer won't allow me to...guess I'll view the docs at home.