Cecil Moore wrote:
On Jun 13, 1:55*pm, K7ITM wrote:
*It doesn't make any sense to me to put a shorted
section of line in series with another line, so my confusion starts.

Tom, I didn't know initially that the example was in "Reflections
III". A series stub can be used instead of a loading coil on a wire
antenna. I had never seen a series stub used in such a manner on a
transmission line and that's why I was confused. I'm assuming that the
center conductor is broken and one side is connected to the inner
conductor and one side is connected to the braid on a stub, but I am
not sure that is correct. There's got to be a less complicated example
that we can use.
--
73, Cecil, w5dxp.com

Ah, OK. Now I understand what Walt meant... Though it's possible to
use a series stub on a transmission line, as you say, it's not all
that common in practice. I suppose that's why my mind wasn't going
there. Mea culpa. Perhaps now I can go back and look at Walt's
original question and make more sense out of it.

When a series stub is used in an antenna (as in a quarter-wave stub
coupling colinear half-waves), King points out that coupling from the
antenna fields to the wires in the stub, when the stub is an open-wire
line perpendicular to the axis of the half-waves, is an important
factor in how the stub operates to establish in-phase currents on the
adjacent half-waves... I see you made a comment about antenna
currents on the stub in John Smith's example, too.

Cheers,
Tom