[SI-LIST] Re: AW: Stripline reference
- From: Amit Kumar <Amit.Kumar@xxxxxxxxxxx>
- To: "Gert.Havermann@xxxxxxxxxxx" <Gert.Havermann@xxxxxxxxxxx>, "si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx>
- Date: Fri, 27 Sep 2013 11:20:04 +0000
Hello Gert,
What if power and ground layers are equidistant from the signal layer?
Also, can you explain what do you mean by the position of the cap?
Regards
Amit Kumar
Baghmane Tech park, Bengaluru
T: + 91-80-42422526
amit.kumar@xxxxxxxxxxx
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Havermann, Gert
Sent: Friday, September 27, 2013 4:37 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] AW: Stripline reference
It all depends on the position of Coupling caps, the distance to each plane and
the speed of your signal.
If you simulate, you have to take the position of the caps into account, or at
least leave the power plane floating at each port. The model must be as close
to reality as possible, thus only connections between planes that are really
there should be used in simulation. And the right boundary has to be used as it
has massive influence on the results.
BR
Gert
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-----Ursprüngliche Nachricht-----
Von: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] Im
Auftrag von Jason wuc
Gesendet: Freitag, 27. September 2013 12:55
An: si-list@xxxxxxxxxxxxx
Betreff: [SI-LIST] Stripline reference
Hello Experts,
I need your help.
I am extracting s-parameter of some strupline traces. These traces connect two
flip chips on board and are routed between power and ground plane where power
is upper plane and ground is lower plane I am in doubt that whether I should
take ground/power as reference or both planes as reference while assigning
ports.
Please reply.
Jason
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