I assume you have read this:


''A fractal antenna's response differs markedly from traditional antenna
designs, in that it is capable of operating with good-to-excellent
performance at many different frequencies simultaneously. Normally standard
antennas have to be "cut" for the frequency for which they are to be
used-and thus the standard antennas only work well at that frequency.

This makes the fractal antenna an excellent design for wideband and
multiband applications. In addition the fractal nature of the antenna
shrinks its size, without the use of any components, such as inductors or
capacitors.''

http://en.wikipedia.org/wiki/Fractal_antenna