On 26 Mar, 19:27, "Jimmie D" wrote:
"art" wrote in message

ups.com...





Antennas seemed to have evolved into structures that
are parallel or at right angles to the earths surface
Why is this or is it asthetics that is driving this thinking?
My research on the subject evolves around the vector formation
of radiation and where the addition of the vectors involved
which creats radiation is at an angle to the radiator..
This suggests that for best radiative advantage it is
this vector that should be parallel to the earths surface
and not the physical radiator. This appears to be born out
by following my Gaussian approach to radiator design.
So the question of habitual arrangement of antenna arrays
parallel or at right angles to the earths surface as
being the best arrangement needs some sort of validation.
Any thoughts as to why it should be so and the scientific
facts that support it?
Art

What angle did you derive was the best angle to mount an anenna? Please show
experimental data to backup your conclusions.

Jimmie- Hide quoted text -

- Show quoted text -

I searched thru Google and I see there is a lot of work going on with
respect to tilting in the GHz area. Apparently some antennas come
equiped with remote mechanical as well as digital type switchers. I
found one commercial vertical antenna that was FIXED at a 3 degree
tilt which is about what I found with a high frequency version for max
vertical gain. Seems like the majority are going for mechanical
tilting as digital delay style tilting is having an adverse action on
the beam itself. I cannot find any literature that supplies technical
backup so I suspect they are the result of emperical work and not
mathematically as I have.It does seem that
many are using tilt angle for accuracy in TOA for various reasons.
By the way I have found that with cluster form this tilt angle is
progressive with respect to close spaced elements in both horizontal
and vertical forms. Seems like the commercials are spending a lot of
money with repect to tipping for WiFI which requires extreme accurracy
between nodes and where inaccurracy becomes progressive in
deteriation. All very fascinating at least for non amateurs.
Art