Tam/WB2TT wrote:
Whoops, ERROR. There is no current flowing from the source, but there is
current flowing through the short in steady state.

There is no net current flowing from the source, but there is net
current flowing through the short during steady-state. Where does that
current come from? It comes from the in-phase addition of forward
and reflected current. The voltage goes to zero and the current doubles
at a short. The zero net current from the source comes from the out-of-
phase addition (subtraction) of forward and reflected current.

This is where that darned definition comes into play. By definition,
the reflected current is being 100% re-reflected and the source is
delivering zero current or, in a system with losses, is delivering
only the amount of current needed to offset the losses.

We can argue whether the reflected current makes it back into the
source or not. But there is no argument that reflected current is
originating at the short in the 1/4WL stub because it can be
easily measured. Forward current and reflected current are very
close to equal magnitudes all up and down an efficient stub.
--
73, Cecil http://www.qsl.net/w5dxp




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