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.
Is this inaccurate?
The associated electronics are obviously necessary too.
Fractal antennas are mostly snake oil. You’ll always see then driven against a large counterpoise (ground plane), as the counterpoise becomes the radiator. You can make use of Chu’s limit without resorting to fractals.
FYI @madengr, almost all of your recent comments - going back a few months, are in [dead] state. Not sure if you've been shadow-banned or what, but you might want to contact the mods or something.