[SI-LIST] Re: f-domain to t-domain simulation
- From: "ron@xxxxxxxxxxx" <ron@xxxxxxxxxxx>
- To: Michael Rose <mrose@xxxxxxxxxxxx>
- Date: Thu, 08 Oct 2009 20:02:45 -0700
Hi Michael
Yes and No.
The phenomonon is real. If you expect what you see to be real impedance the
answer is no. On a real differential TDR this effect is seen, so
transforming frequency
domain data to TDR response requires this same voltage rise.
I skirt the whole issue by adjusting assumed models in ADS to measured TDR
data and when they match each element can be seperately examined.
Ron Miller
Michael Rose wrote:
>When I convert a f-domain channel to differential t-params (TDD11), I
>notice the impedance rising along a transmission line segment as if the
>tline is predominantly inductive. This tends to bias the impedance
>higher for features towards the far end. The single-ended f-domain
>channel includes the normal 50 ohm terminations. Is this a real
>phenomena? How is it explained?
>
>Thanks. Mike
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