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Update on reading, converting, and using an S parameter file.

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Holger Vogt 2026-07-31 11:13:12 +02:00
parent dd171fc18d
commit 0c62b17af7
1 changed files with 4 additions and 1 deletions
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README.rf
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@ -63,8 +63,11 @@ QPAC, QPnoise, and QPXF may be swept over frequency instead of fixed f_in, e.g.
replace 'qpxf <output node> <f_in>' by 'qpxf <output node> <dec/oct/lin> <Npo> <fstart> <fstop>' replace 'qpxf <output node> <f_in>' by 'qpxf <output node> <dec/oct/lin> <Npo> <fstart> <fstop>'
Read S parameters and convert to instance with ports p1 to pN, referenced to ref. Read S parameters and convert to instance with ports p1 to pN, referenced to ref.
Command in the .control section:
pre_snp -native my_touchstone.s2p ; reads a Touchstone file, vector fits and issues a *.nport file
Instance in the netlist
N1 p1 p2 ... pN ref mymodel N1 p1 p2 ... pN ref mymodel
.model mymodel nport(file="...") .model mymodel nport(file=my_touchstone.nport)
RF two-port stability RF two-port stability
sp ... (generate the S parameters) sp ... (generate the S parameters)