Those aren’t fractal antennas, which don’t really work very well anyway. Fractal antennas are effectively kind of like trying to tap a horn or discone antenna

Those aren’t fractal antennas, which don’t really work very well anyway. Fractal antennas are effectively kind of like trying to tap a horn or discone antenna at the widest point. If you work in the biz there will always be people pitching purportedly novel antennas to you - a good reference is Hansen and Collins’ Small Antenna Handbook