Re: [SI-LIST] : Jitter measurement

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From: Paul Levin (levinpa@earthlink.net)
Date: Mon Mar 19 2001 - 15:36:46 PST


Dear Mikhail and anyone else interested,

The math behind phase modulation, as jitter is called in RF circles, is
about as clear as mud. Some of the references that have helped me
though the jungle include:

James A. Crawford, "Frequency Synthesizer Design Handbook,"
     Artech House, 1994.
Randall W. Rhea, "Oscillator Design & Computer Simulation,"
     McGraw-Hill, 1995.
Rhode, Whitaker and Bucher, "Communications Receivers,"
     McGraw-Hill, 1997.

Each has a chapter or a fair portion of a chapter on phase noise in
oscillators and/or phase-locked loops. I hope that these will help.

Paul Levin
Senior Principal Engineer
Logic Innovations
______________________

Mikhail Matusov wrote:

> Paul,
>
> Can you recommend a good source on this jitter mathematics that you
> mentioned? I've been looking for some information on relationship between
> phase noise and jitter for a long time...
>
> Thanks,
> ============================
> Mikhail Matusov
> Hardware Design Engineer
> Square Peg Communications
> Tel.: 1 (613) 271-0044 ext.231
> Fax: 1 (613) 271-3007
> http://www.squarepeg.ca
>
> ----- Original Message -----
> From: Paul Levin <levinpa@earthlink.net>
> To: Sunil Kumar <sunilb@cdotb.ernet.in>; si-list <si-list@silab.eng.sun.com>
> Sent: Monday, March 19, 2001 11:39 AM
> Subject: Re: [SI-LIST] : Jitter measurement
>
> > Dear Sunil,
> >
> > Better than either of these would be to get your hands on a good,
> > old-fashioned analog spectrum analyzer. Center your display on
> > the nominal frequency and then decrease your resolution bandwidth
> > (and everything that goes along with it) so that you can see the
> > detail in the first few KHz on either side of the center frequency.
> >
> > You'll have to study up on jitter mathematics and dBc offsets, but
> > once you've got that straight, you can integrate the flanks of your
> > oscillator between any f1 and f2 and determine the likely jitter
> > arising from noise in that frequency range.
> >
> > Paul Levin
> > Senior Principal Engineer
> > Logic Innovations
> > __________________
>
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