LOG-PERIODIC ANTENNA Russian patent published in 2013 - IPC H01Q11/10 

FIELD: radio engineering, communications.

SUBSTANCE: extreme logarithmic-periodic structures 1, 2 are arranged at the angle α=45°, and at the distance I=0.15λ_max from vibrators of largest length of extreme logarithmic-periodic structures 1, 2 there is a screen 5 of a dielectric material with ε=6 in the form of square with side size λ_max × λ_max perforated with twenty holes of the diameter 0.07"Я"max' arranged symmetrically to the axis of the square, where λ_max - maximum length of operating range wave. The proposed technical solution makes it possible when using a log-periodic antenna as a superbroadband radiator of axisymmetric mirror antennas to ensure their efficient radiation and therefore increase energy potential of the receiving system.

EFFECT: increased identity of directivity pattern width in orthogonal planes and reduced level of side radiation.

3 dwg