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Amplitude and Phase issue with S-Parameter file #44

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kpriest20 opened this issue Feb 24, 2023 · 1 comment
Open

Amplitude and Phase issue with S-Parameter file #44

kpriest20 opened this issue Feb 24, 2023 · 1 comment

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@kpriest20
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kpriest20 commented Feb 24, 2023

This is a simple simulation of a mini circuits power splitter. You would expect there to be some small insertion loss between port 1 and ports 2&3 as well as a slight phase shift. However, the simulation in QUCS appears to simulate an ideal splitter with no phase shifting or loss of voltage amplitude - the output voltages are literally on top of the input. You can see these effects though in the corresponding Keysight ADS simulation though. The other odd thing is how the S parameter will not work unless the parameter duringDC is set to short when this device is a transformer and at DC it's really an open. Otherwise great program, I hope IBIS simulation capability is on the roadmap.

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@cweickhmann
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Could you post the Touchstone file or at least the line at 0.2 GHz?

@felix-salfelder felix-salfelder transferred this issue from Qucs/qucs Jul 2, 2024
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