On Sep 18, 2:08*am, Szczepan Bia³ek wrote:
I wrote" "Pressure pulse travel" I means that in monopole
antena is one strong source on the and and traveling
source "along its length" .

I assume from what you posted before that you meant to write
"in a monopole antenna there is one strong source on the END..."

Could you please post the reason(s) you think so?

Note that only the change in current and charge, over time,
produces EM radiation. At the top of a monopole, and at the ends
of a dipole the net current is almost zero -- so those locations
generate very little of the total EM radiation from these antennas.

RF