[SI-LIST] Re: TDR Resolution
- From: "Moeller, Merrick" <mmoeller@xxxxxxxxxxxxxxx>
- Date: Mon, 17 Jan 2005 13:17:07 -0600
Thanks for all the help everyone. I found
Kipp's solution suitable for my needs..
To continue the discussion:
This scenario is taking place in a simulation. It is
Possible to create increased frequency bandwidth simulations
That may handle faster rise times... What are some=20
Of the limiting factors when considering a MAXIMUM FREQUENCY
BANDWIDTH for a simulation? For example, I wanted to=20
Resolve some retention feature in a coaxial type structure.
Is there a Max frequency.... Strictly speaking of TDR and
Square wave reproduction. I realize that the structure will
Have cutoff frequencies for particular modes.
M
-----Original Message-----
From: Ed Sayre III [mailto:esayre3@xxxxxxxx]=20
Sent: Monday, January 17, 2005 12:17 PM
To: Moeller, Merrick
Cc: si-list@xxxxxxxxxxxxx
Subject: Re: [SI-LIST] TDR Resolution
Merrick,
As you can see from the responses the "Rule-of-Thumb depends on your
signaling needs. The risetime of the TDR really depends on the the data
rate of the signals. R. K Poon's book has an excellent section on
sampling and risetime effects. I believe it is in an appendix in
chapter 5.
Also a word to the warning, don't use a ramp function, it tends to
give you unrealistic results and lots of ringing and convergence
problems.
Regards
-Ed
At 10:21 AM 1/17/2005 -0600, Moeller, Merrick wrote:
>Experts,
> I am in the process of running a simulation In order to=20
>resolve signal path discontinuities. Is there a Rule of thumb that=20
>would give the minimum rise time signal To resolve a min length=20
>discontinuity?
>Regards,
>Merrick
>
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