you contradict yourself, and don't understand the problem.... there, i said
it.

"art" wrote in message
oups.com...

With a driven element you have two circular radiation patterns at each
section.

no you don't. a single dipole element like a common driven element all by
itself in free space has a doughnut shaped pattern in 3 dimensions. the
typical cross section you see in an azmuth slice is only part of the
story... but continue...

Before you start to focus a beam for gain by adding parassitic elements
you must first collect
maximuml radiation to the desired direction.
Sooooooooooooo............................
with these two circular patterns from the driven element you fold the
pattern in the middle
so that both patterns are in the same direction and the same shape i.e
a circle that expands to a larger circle but holding on to a particular
half power beam width which is an included angle.
So when we start to add parassitics we are able to deal with this
CIRCLE of radiation which then focusses by squeezing of the pattern
since it cannot add to the initial pattern.

just how do you plan on doing this?? you can't take and just fold a field
around???

I think the above clearly shows that for recovering of radiation from
the rear direction in any form must produce a radiation pattern to the
front by retaining a circular pattern. Now I have achieved
such a transformation of a driven element with a reflector to produce
an initial circular pattern via computor analysis which agrees in my
mind that rear radiation does nothing fto add to the forward radiation
lobe.

but you said above that you would do this before adding parasitic elements.
what do you think a 'reflector' is?? wait, i can answer that, its a
parasitic element!

weather it agrees with your mind or not doesn't matter... it has to be
physically realizable. so what is this magic configuration that gives 100%
folding of the lobes over themselves?? and what happens in the 3rd
dimension?

Now we can ignore this posting since it is about antennas.

your first idea is the best, so i snipped the rest.