Standing waves
"Richard Fry" wrote
...
On Sep 23, 6:14 am, Szczepan Białek wrote:
Highest antenna current do not means high enough to radiate. The high
current is in transmissing line of the short antennas.
. In 0.05 no currents at all at the feed point
If there is no current at the feedpoint terminals of a 0.05WL dipole
then there is no current anywhere else in it, and there would be no
radiation. Obviously that is not the reality.
The simplest dipole is a transmissing line (the two wires).The standing
waves are always 1/2WL apart. The max current is always 1/4WL from the
standing waves. " In 0.05 no currents at all at the feed point" means, of
course, that the current is very very small.
The current distribution in such short dipoles is triangular in form:
highest at the center, and zero at the ends of the dipole arms.
No such oddity in the reality.
S*
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