[SI-LIST] Reference when interconnect is an S-parameter file
- From: "Zanella, Fabrizio" <fzanella@xxxxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Thu, 6 Jan 2005 15:17:13 -0500
I'm using a Touchstone .s4p file (4 port S-parameter) as my channel in a
backplane serdes simulation in Hspice. There's no ground reference for
the touchstone file; my simulation deck basically looks like this:
Xdriver inp inn vcc vss txp txn tx_model $ plus pre-emphasis settings
S1 txp txn rxp rxn mname=s_model
Xreceiver rxp rxn vcc vss input_model
My question is does it make sense to keep the same return node, vss, for
the driver and receiver circuits or should I add in LCR circuitry to
account for card1-connector-backplane-connector-card2 path it takes?
Thanks and regards,
Fabrizio Zanella
Signal Integrity
Enterasys Networks
Andover, MA
Phone: 978-684-1340
fzanella@xxxxxxxxxxxxx
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