On 8 Nov, 06:58, "Richard Fry" wrote:
"art" Of course there is no radiation off the ends. What ever is sitting on
the antenna can only fall off one side or the other.

_____________

Not that I agree with your theory of why this happens, but note that you
have now acknowledged a condition that you had disputed just a bit less than
3 hours earlier in this thread.

Quoting from that post of yours, "Antenna books say the pattern is a figure
eight! How can that be?"

RF

No. I asked a question as to how that can be To which I later
theorised that
one can have "sliding" electrons as well as those that are pushed over
board.
The matter of "sliding" comes into play when you have a tipping force
to
overcome the tenacity of inertia in the face of a moving fulcrum.
But when you get down to the mathematical analysis it becomes obvious
that the summation of all vectors involved with radiation produces a
vector that does not align with the radiating axis which reinforces
the notion of "sliding electrons" or should I say sliding staic or
passive particles?
Still waiting for you to point to the error in Dr Davis's mathematics
such that the existing radiation theory can stay intact !.
I would point out that all computor programs on radiation show that
for maximising radiation of a particular polarity the summation
vector of all vectors involved with radiation is different to that
of the axis of the radiator which forces a shift in parallelism
to the earth's surface. This is an evolution of Gaussian law
which provides further insight to the laws of Maxwell who somehow
overlooked the connection between dynamic and static forces.
If the Gaussian mathematics is at fault then by logic all
computor programs must be suspect.
The tipping point is that computor programs ingnored a condition
that must be imposed if one is to view Maxwells collections
as a series of laws. It was this error which lead to viewing
the sino soidal shape of electrical current as constituting
the time varience required per Lorentz and others for the
production of radiation where as the time varience factor
is that obtained by the time constant of energy release of
distributed inductance and capacitance. The saving grace for
computor programing was its adherrence to the conservation
of energy theorem, energy in equals energy out which is
basically what the leanings of Gauss was.
Sowith elements that are resonant olone and in their entirety in a
array
produces a smaller array than that for a planar array such as a yagi.
On top of the reduction of element spacings it allows for helices
or the action of "slow waves" to reduce the htree dimensions of
freedom for any array down to a size of a half wave per side
noting at the same time one has only to feed one element and
yet gain the aperature presented by a stack of beams with
separate feed points
So I believe it behooves all to reexamine the mathematics
because if they are correct thben the rewards are humoungua.
Or play with your computor programs with non planar
radiating elements
Art Unwin KB9MZ.....xg