[SI-LIST] AW: Re: Trace width @ frequency
- From: "Havermann, Gert" <Gert.Havermann@xxxxxxxxxxx>
- To: "Istvan Nagy" <buenos@xxxxxxxxxxx>, "Preethi Ramaswamy" <preethi.gowtham@xxxxxxxxx>, si-list@xxxxxxxxxxxxx
- Date: Fri, 25 Jun 2010 08:36:43 +0200
Preethi,
in addition to Istvans advice, you should also take a look at the signals
spectrum. Some signals have a strong peak in the frequency band and it makes
sense to use the centre frequency of this peak. Note that for PRBS you will not
see any peak, the spectrum is quite flat from zero - Fundamental.
BR
Gert
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-----Ursprüngliche Nachricht-----
Von: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] Im
Auftrag von Istvan Nagy
Gesendet: Freitag, 25. Juni 2010 08:27
An: Preethi Ramaswamy; si-list@xxxxxxxxxxxxx
Betreff: [SI-LIST] Re: Trace width @ frequency
Hi
I would suggest to consider the knee frequency, which is based on the rise time.
f_knee=0.5/t_rise.
Check this:
http://www.pcdandf.com/cms/magazine/95/6793
regards,
Istvan Nagy
----- Original Message -----
From: "Preethi Ramaswamy" <preethi.gowtham@xxxxxxxxx>
To: <si-list@xxxxxxxxxxxxx>
Sent: Thursday, June 24, 2010 11:23 PM
Subject: [SI-LIST] Trace width @ frequency
> Hi All
> When I determine the trace width of a 50 ohm single ended signals in
> the package, what frequency should I consider?
> Say, my signal operates at a fundamental frequency of 1GHz. In the
> package,
> should I determine the trace width at 1GHz or some particular harmonic of
> the fundamental frequency or should I look at the rise time?
>
> Appreciate your help
> Thanks
> Preethi
>
>
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Other related posts:
- » [SI-LIST] AW: Re: Trace width @ frequency - Havermann, Gert
