On Oct 7, 1:19*pm, Jeff Liebermann wrote:
On Tue, 7 Oct 2008 11:49:59 -0500, (Richard

Harrison) wrote:
Dr. Nathan Cohen (Chip) is founder of Fractal Antenna Systems, Inc. He
is also a professor of Applied Science and Telecommunications at Boston
University.

I have no idea what "fractal theory" means. *It's not a theory. *It's
a mathematical alogorithm with divisible self-similar properties that
can be applied to antenna design.

Their web site seems to have been suspended for some reason.
http://www.fractenna.com/
is getting redirected to:
http://ns4.netatlantic.com/suspended.page/

Overview and references:
http://en.wikipedia.org/wiki/Fractal_antenna
Note that the article hints that a fractal antenna are intended to
maximize the element lengths through self-similar repetative patterns.
Whether a fractal (tubulence model) or a random meandering array is
more effective is subject to some debate. *Fractals may have a more
efficient packing factor. *(note: I don't pretend to know any more
about fractal antennas than I've read).

--
Jeff Liebermann * *
150 Felker St #D * *http://www.LearnByDestroying.com
Santa Cruz CA 95060http://802.11junk.com
Skype: JeffLiebermann * * AE6KS * *831-336-2558

That is exactly correct. The fractal antenna is an optimised meander
antenna where
the radiator "packing" per unit space is superior. It is just that a
fractal pattern has a
mathematical background where impedance can be garranteed where-as a
meander line design is subject
to human error. I see no reason why one antenna should be seen as
"better" than the other
if the radiating length and the unit areas are the same. I also see
this as another example where people talk down on this antenna
as a way of resisting change. Obviously industry see it as
particularly usefull especially with encapsulated designs and Chip is
making a lot of money
despite the dirisivenes of the "experts" on the newsgroup..
Art