Why not just use a normalized Smith Chart? Ten the center resistance can
be anything you want.
Dave - W?LEV
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On Sat, Feb 8, 2025 at 5:15?PM DiSlord via groups.io <dislordlive=
gmail.com@groups.io> wrote:
NanoVNA has a port renormalization function (called Port Z, see
DISPLAY->PORT Z: 50) that allows you to see the measured S parameters at
other port impedances.
But since NanoVNA is only available for measuring S11 and S21 parameters,
the following assumptions are made for renormalization: S22 = S11 and S12 =
S21, i.e. the DUT is symmetrical.
To simplify the calculations, a non-complex impedance value is used and
the new impedance of both ports is the same.
And now the question is to what extent it is necessary to make
calculations for different values ??of port impedance, because then the DUT
is not symmetrical?? and the assumption that the S22 = S11 and S12 = S21
are equal is not true.
Or this can be useful?
--
*Dave - W?LEV*
--
Dave - W?LEV
