Approach of fields and contours in an inhomogeneous medium is carried out by means of feeding into in consideration of fractal geometry devices. Fractal allocation electrical and magnet moments of alpha-poles is spotted on differintegral geometry devices. The topological model of the fractal device of an inhomogeneous medium and a physical analogue of charges and currents in such medium is applied 1) to a substantiation of electrodynamics similitude principle, 2) to build-up of the theory and examination of requirements of the frequency independence of fractal structured antennas.

It is shown instances of fractal antennas theory application to log-periodical small antennas modelling.