Walter Maxwell wrote:
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We have thus proved that the virtual short circuit established at the stub point is actually performing as a
real short circuit.
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Walt, W2DU

It is interesting to look at a single short pulse propagating along the
TL. At the stub point, the pulse must encounter a discontinuity in
impedance and therefore there will be a reflection. This can been seen
on a TDR. So there is a real reflection from a stub regardless of
whether or not it is a virtual short.
Alan
VK2ADB