ABSTRACT
Wide-band and multi-frequency antennas perform a common task—increase the number of points in the frequency range with a high level of signal transmission. A multi-frequency antenna is a set of simple identical devices operating at one frequency or in a narrow frequency band. Multi-tiered antenna creates a new prospect for the development of a wide-range antenna. In the direction the most significant results were obtained earlier by means of including concentrated capacitive loads and optimization of these loads. The radiation resistance of each radiator consists of the self-resistance and the mutual resistance multiplied by the ratio of the currents. Log-periodic dipole antenna is a widely used variant of multi-frequency, wide-range and directional antennas. Under antenna development it is necessary to take into account that the arms of each dipole are connected to different conductors of the distribution line, and so they are not coaxial.
