Fractal-spiral antenna for UWB standard

We claim a new approach for UWB antennas taking advantages from the classical and the fractal techniques by applying a log spiral transformation to a fractal design. Stricto senso, this antenna loose its mathematical fractal properties but keeps the physical advantages of a real fractal pattern. A concrete realization of this concept on a twisted Sierpinsky carpet is presented in this paper. To cancel potential additional resonance deserving UWB pulse system, we also propose to use different iterations of the pattern or different fractal initiator for each arm of this antenna. Based upon the simulation of a dipolar twisted Sierpinski carpet, several advantages related to this concept have been emphasized and are detailed here.