On May 10, 8:21*pm, tom wrote:
On 5/10/2010 12:35 PM, Art Unwin wrote:

I just completed a experiment with my antenna optimizer program where
I had a dipole in free space and where I increased the diameter until
it was close to.003 ohms resistive
What this means is the current flow is right at the surface where
there is no skin depth
penetration involved and thus close to zero material resistance. This
means that the total resistance is the radiation resistance of the
surface encapsulating particles. The radiation was 35 db in a shape
close to that of a sphere. (when the resistance of the aluminum dipole
went to zero the radiation went to a perfect sphere) Efficiency was
stated at 100% efficient pointing to 100% accountability for all
forces involved and where losses were at a minimum.
Regards
Art

What program would this be? *I would like to try and duplicate your
results, as would others here.

tom
K0TAR

Great, tho most people on the group have yet to learn about antenna
programs preferring to procede by intuition.
Choose a dipole suitable for a particular frequency
in FREE SPACE.
Increase diameter incrementaly in the order of 1000
inches or so.
Plot radiation field
Continue until impedance drops to much less than 1 ohm (I dropped to
about .003 ohms) Plot radiation pattern and compare change from donut
to sphere shape of pattern and compare results.
What to expect.
Radiation will increase as impedance decreases.
Maximum radiation will occur when the dipole impedance drops to zero
and the particle skin becomes the sole resistance of the composite
dipole.
The radiation pattern will reflect point radiation within the cosmos.
Note some programs provide an impedance in negative terms. It is
better that impedance stays positive to determine all trends.