In message , Art Unwin
KB9MZ writes

Antenna engineers have become so focussed on the half
wave patterns that they have completely ignored the
low efficiency portions at the ends of a half wave
antenna.

Yes, the midldle high current bit generates the H field, but you forget
that the end high voltage bits are needed to generate the E field. The
antenna 1/4 wave physical length is needed to get these in the correct
phase.

Now it should be possible to make a compact antenna where you can
generate the H field from a current element and the electric field from
a voltage element, making sure that the 1/4 phasing is preserved between
the voltage and current. Naah it wouldn't work

Brian GM4DIJ

--
Brian Howie