On Dec 9, 10:59 pm, "AI4QJ" wrote:
I do not understand why people will not accept that, when one connects a
length of transmission line of Zo1 to another length of transmission line
with Zo2, there can/will be a phase change at the discontinuity.

If there is a phase change on the Zo1 line by itself when the discontinuity
is 0 + j0 impedance (short) or 0 +j0 conductance (open), shouldn't there be
a phase shift between 0 and pi/2 when the impedance (or as you say,
"impedor") is added somewhere in between, i.e. when connecting the line of
Zo2, such as -j567 ohms at the electrical degree point of the termination?

This argument does seem to have a certain attractiveness.

It is partially understood in terms of a lumped component of -j567 but that
model describes the mismatch at the discontinuity only. It must be corrected
at the system level to also accouint for the known 10 degree additional
transmission line contribution of the 100 ohm line.

It seems to me that if connecting a -j567 impedance
produces a certain response, it should not matter how
that -j567 impedance is produced. Consider the following
cases:

- produce the -j567 with a lumped capacitor
- produce the -j567 with 10 degrees of 100 ohm line
- produce the -j567 with 46.6 degrees of 600 ohm line

The claim appears to be that despite the 43.4 degrees
of 600 ohm line being terminated in the exact same
-j567 impedance in all cases, the phase shift
experienced at the interface is different in each
case.

Does this really make sense?

....Keith