Richard Harrison wrote:
Kraus says:
"The currents on the transmission line flow out on the antenna and end
there, but the fields associated with them keep on going."

Actually, in a standing-wave antenna, such as a 1/2WL dipole,
the antenna wave currents bounce back and forth between the
open ends and the feedpoint. If there is not a Z0-match to the
feedline at the feedpoint, some of the antenna current reflected
from the open end of the antenna leaks back into the feedline and
makes it's way back to the source. A TDR will register reflections
both from the feedpoint and the open ends of the antenna.
--
73, Cecil http://www.w5dxp.com