View Single Post
  #80   Report Post  
Old November 24th 08, 06:57 PM posted to rec.radio.amateur.antenna,sci.electronics.design
Jim Lux Jim Lux is offline
external usenet poster
 
First recorded activity by RadioBanter: Mar 2007
Posts: 801
Default Log-Periodic Antenna Design

Cecil Moore wrote:
Roy Lewallen wrote:
Sorry, it doesn't. Among the claims, trolls for investors, and
testimonials, where is the quantitative data showing that a fractal
antenna is in any way better than a bow tie, in what ways, and how
much? In other words, exactly where is the evidence on which you based
your statement?


http://ieeexplore.ieee.org/Xplore/lo...number=1610336


If you are a member of IEEE, you can access this paper:

Multiband behavior of wideband Sierpinski fractal bow-tie antenna
Yamini, A.H.; Soleimani, M.
Microwave Conference, 2005 European
Volume 3, Issue , 4-6 Oct. 2005 Page(s): 4 pp. -
Digital Object Identifier 10.1109/EUMC.2005.1610336


interesting paper..

The big benefit (from a cursory reading).. is that you have a more
consistent antenna pattern over the frequency range, which the vanilla
bowtie does not. And a somewhat wider match bandwidth. (mostly extending
it to higher frequencies)

Nothing magic, though.