MULTIPURPOSE AIRCRAFT ANTENNA FEEDER SYSTEM Russian patent published in 2014 - IPC H01Q21/00 G01S13/48 

FIELD: radio engineering, communication.

SUBSTANCE: system comprises front UHF antenna, two horizontal polarisation L, S antennae, a vertical polarisation L, S antenna, rear horizontal polarisation UHF, L, S antennae and a vertical polarisation L, S antenna, a switching-separation device, a control device, five two-way switches, five frequency-separation devices and a controlled phase changer. The control device is connected by inputs to the UHF, L, S radio equipment, vertical gyroscope, a radio beacon course angle determining device, and by outputs to the switching-separation device, switches and phase changer. The switches are connected on one side to the switching-separation device, and on the other side to the antennae, directly or through the frequency-distribution devices, and with the rear horizontal polarisation antenna through the phase changer.

EFFECT: stable operation of aircraft UHF equipment during circular scanning of space in the azimuthal plane, including in interference zones and in L, S frequency ranges with considerable roll of the aircraft.

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