CIRCULAR ANTENNA Russian patent published in 2015 - IPC H01Q11/00 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to antenna feeder devices and can be used to provide stable radio communication of fixed and mobile objects in any azimuthal direction. The circular antenna comprises a supply feeder, a power divider for dividing power by the number of log-periodic dipole antennae, the frequency range of each of which coincides with the operating frequency range of the antenna, connected to the supply feeder on one side and on the other side by additional cables with inputs of the log-periodic dipole antennae arranged in lateral faces of a conditional polygonal truncated pyramid with an even number of faces, and additionally used log-periodic dipole antennae, arranged in the horizontal plane outside the conditional pyramid, except the longest dipoles, which are simultaneously equal thereto by length and the used dipoles of the log-periodic dipole antennae, arranged in the faces of the conditional pyramid.

EFFECT: wider range of antenna properties in the horizontal plane and providing the required protective signal power to interference power radio in a wide frequency range.

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