[ibis-interconn] Example of IIRD9 S-parameter shorting
- From: "Mirmak, Michael" <michael.mirmak@xxxxxxxxx>
- To: <ibis-interconn@xxxxxxxxxxxxx>
- Date: Tue, 17 Apr 2007 22:01:50 -0700
Enclosed please find an example ICM file showing how IIRD9 could be used
with our infamous shorted power rails and ground rails.
We are assuming that, in cases where power delivery analysis with
S-parameters is desirable, one could simplify the analysis by shorting
together the power rail connections and, similarly, short together the
ground rail connections even if one has 100 physical pins on each rail.
In ICM, one can do this in two ways:
- keep the S-parameters with as many ports as physically exist, but use
the same node name for all power rail nodes (and do the same for the
ground rail nodes); somewhat inefficient
- reduce the S-parameter ports so that the S-parameter data set only
includes one port for the power rail and one port for the ground rail
(additionally, one can short both at the port and node level)
The example shows the complete S-parameter and nodes, then each of the
shorting cases above. For simplicity, I have assumed ideal node 0 (GND)
as the reference for all ports.
Note that this will not work in the current parser, for obvious reasons.
On a separate note, I am investigating a potential parser bug, where
files of extension "snp" will fail if "n" > 9.
- MM
<<sample_5ghz_section1.s14p>> <<sample_5ghz_section1.s6p>>
<<sparam_iird9_rail_shorting.icm>>
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