"art" wrote in message
oups.com...
On 20 Oct, 04:59, "Mike Kaliski" wrote:
"John Doe" wrote in message

...I am looking for
the construction article "FRACTAL Antenna for 10m" that
appeared sometime ago in I think either QST, Ham Radio, or 73 magazines.

I have a lot of spare time on my hands - so I thought I would like to
construct one and use it portable as I live in a Antenna Restricted
Community.

73's

As others have mentioned, several articles appeared in various magazines
snip.
Obviously you will need two mirror image windings to create a dipole
antenna,

Mike,
the definition I arrived at is that as long as the wire represents one
wave length, is resonant and in equilibrium while at the same time holding
to the L/C ratio of the material in question. This can be produced with
just two degrees of freedom by folding the wire at the half wave point and
then wind the two wires in pancake shape/form.
You can also wind two in series where capacitive actions between them can
create a variety of results.
The important point is that one must hold to the conditions set in the
definition (no exceptions)

Art

ideally as closely matched in dimensions as possible. Efficiencies
can approach 50% of a full sized radiating element.

Hope this helps

Mike G0ULI


Art

I agree. Incidently the origin of the idea for fractal antennae apparently
arose from the observation that hanging down the ends of a dipole, or
bending it to fit a limited site didn't affect the efficiency too much. A
university student decided to see just how much bending and could take place
before the antenna became unusable and hey presto, the fractal antenna was
invented and he had a thesis for his degree.

Mike G0ULI