[MarioK]

Hi el-spec_SB,
freq2time appears to require the DC point. If you start the sweep at zero Hz, it should work as intended.

[MarioK]

(Accidently simulated the customized setup in v.5.8. Just checked using 5.9. –> nothing changed.)

[MarioK]

Hello Max,

thanks for the feedback. I slightly changed my example. Made the edges factor 1000 slower. Then again, did the FFT, which means a power-of-two amount of data points, followed by a DFT with only one point more (or less). Result is the same Behavior. Instead of 2^18 points feel free to try 2^17 or 2^19 points and afterwards one point more or less. This is no problem in the stepsize you choose. You can also try to compare to spice results. The common spice derivatives do nothing else than resampling the timesignal to a given amount of datapoints in equidistant steps before computing the FFT or DFT.

[MarioK]

I don’t really get your explanation. But compared to LTspice, the results are identical – under the condition that you use 1e3 or 1k (lower case letter!) as resistor values. The capital K used as an SI prefix is just ignored by uSimmics.

[MarioK]

In S-parameter setups, the capital S generally seems to be an unlucky choice for a variable name.

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