On 20 Dec, 11:41, "Richard Fry" wrote:
art,

Wideband antennas already are available with no need for the "tank
circuit/equilibrium" concepts, design methods and limited band segments you
think must apply.


This IS a log periodic design which provides for close segments of
resonance
limited only by the number of elements aplicable for a frequency
spread.
I not only THINK that limited band spread applies, I KNOW for sure
that it does
when considering impedance changes with respect to frequency.
This operates on the same principle of multi elements of different
lengths as
opposed to a mechanically lengthened radiator presently on sale for
amateurs.
You are dwelling too much on old teachings in a book that was around
when you
were young. The next generation will leap frog you as newer books with
fresh
concepts are printed. This will give lie that all is known about
antennas!
The antenna I described does the same thing while mounted on
the
top of the tower where consideration of ground plane is not an issue
and where
TOA can be varied by tilting, the latter becomming increasingly in use
in
present day communications.
Your education in radiation tho limited is commensurate with your
age and
experience,certainly not up to par for the future generation but
enough to
satisfy your particular life expectancy segment.