HFSS 9 vs HFSS 8 : differences between sNp files
时间：03-23
整理：3721RD
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In HF$$9, the touchstone file (sNp) is different with that of HFSS 8.
I think it mat be due to difference of renormalization method.
Is it right?
Especially, at waveguide structure the sNp file is hard to use in ADS.
When the 50 ohm port is attached to 50 ohm normalized HFSS9 sNp file in ADS, the simulation result is different with HFSS 9 result.
How can I fix this? Plz answer this problem.
I think it mat be due to difference of renormalization method.
Is it right?
Especially, at waveguide structure the sNp file is hard to use in ADS.
When the 50 ohm port is attached to 50 ohm normalized HFSS9 sNp file in ADS, the simulation result is different with HFSS 9 result.
How can I fix this? Plz answer this problem.
In version 8.0 - when export touchstone hfss does not renormalize them to 50 ohm - just issues a warning. In hfss 9.0 always normalize and is why you see the difference.
workaround is to use citi file instead or export szg file, then work in version 8.0 and export unnormalized touchstone to use in ADS.
Regards,
cheng