Electrodynamic Characteristics Of Wire Dipole Antennas Based On Fractal Curves

This article presents wire dipole antennas (d = 1 mm, length L-0 = 14.5 cm) based on prefractals n=1, 2, 3 of the original anisotropic geometric fractal. An analytic description of this fractal is proposed through the Heaviside function. The resonant frequencies of fractal antennas are determined using the scaling factors gamma of fractals under consideration. The radiation patterns at the resonant frequencies and frequency-dependent characteristics, such as S-11, VSWR, and input impedance in the UHF band, were investigated using theoretical and experimental methods. The characteristics of fractal antennas with triangular, isotropic and anisotropic structures are compared. It is shown that the proposed antenna model has advantages over the width of the radiation pattern, the power spectrum, and the technological characteristics of manufacturing and operation.