Thanks for the interesting web.
>Higher mode effects.
I don’t know much about it, but I think it is possible.
For example.
When there are dk1 and df0
there is no difference between the waveforms of port50Ω/line50Ω and port51Ω/line51Ω.
When dk4.3 and df0.021 (FR-4)
There is a difference in waveform shape between port50Ω/line50Ω and port51Ω/line51Ω.
*What is noteworthy is not the value but the waveform.
When port impedance and line impedance match, the waveform is collapsed.
QUCSSTUDIO/CST has the same behavior.
SONNET/Hyperlynx behaves differently than QUCSSTUDIO/CST.
I do not know what is the correct behavior, but can I assume that QUCSSTUDIO is correct?
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