Log-periodic antennas of vertical polarization

The method of realization log-periodic vibrator antennas in asymmetrical execution is shown in the work. The method is based on a two-wire collecting line of four conductors with alternating polarity. The proposed construction of a log-periodic antenna made it possible to form a plane of symmetry and a connection of vibrators on each of the conductors of the same polarity. Thus formed the structure consists of two halves, and on each of them the vibrators are arranged according to the law τ
²
, relatively to each other by τ. On the example of the SW band antenna system in asymmetrical design, the possibility of providing communication at distances up to 300 km is shown.