Dear Andreé, I would like to attach a pdf-document
from Dr. Howard Jones author of "High Speed Digital design-handbook of black magic"
See
www.sigcon.com
for a webpage with lots of interesting information on matching.
What you'll see is regardless of the potential of the return...
>The direct connection of a dipole to coaxial cable is not >a dramatic mistake in many cases but may cause rf flowing >along the coaxial outer braid in some cases which is >radiated partially...
I should be able to use a coax in an balanced mode, if I use the balun at the transmitter end...