[SI-LIST] Re: S-par to Spice
- From: "Lars Juul" <write2larsj@xxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Mon, 2 Jun 2008 10:25:14 +0200
I suggest brushing off the network synthesis skills, fit a rational function
to the S-parameters, then construct your equivalent circuit from the poles,
zeros and constants of the rational function.
Obviously, the end-result will depend on how well you fit your rational
function to the s-parameter data. Make sure the fit is passive, and enforce
it if needed.
Thanks,
Lars
2008/6/2 Saoer Sinaga <saoer.sinaga@xxxxxxxxx>:
> Dear all,
> As you all might know, the S-parameter produced by HFSS is not always
> passive, especially when you extrapolate to DC.
> Is there any tool that can generate a passive spice file (spectre
> compatible) out of a non-passive S-par? Preferably a freeware that I can
> use
> immediately.
>
> many thanks,
> Saoer Sinaga
> NXP Semiconductors.
>
>
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