AIRCRAFT ANTENNA Russian patent published in 2013 - IPC H01Q13/08 

FIELD: radio engineering, communication.

SUBSTANCE: aircraft antenna, having a housing with a flange, having foamed dielectric filler, two antenna radiators lying therein and connected to a high-frequency connector through a channel splitter, and a lightning protection system, is provided with a base, a dielectric board and an additional antenna radiator; the board is in form of a sheet, having on one of its sides a topology of three printed antenna radiators on frequency bands F₁, F₂, F₃; the radiator on the top frequency band F₁ is a quarter-wave radiator and is connected directly to the high-frequency connector; radiators on lower frequency bands F₂, F₃ are shortened and their inputs are provided with matching L-links consisting of inductive elements; the channel splitter has band-pass filters in form of series oscillation circuits L_f2-C_f2, L_f3-C_f3; the lightning protection system is in form of lightning rods lying horizontally on both sides of the crest of the housing, lightning conductor tracks running downwards from the lightning rods on the side surfaces of the housing, and continuous metal-coated areas on the flange of the housing; the lightning conductor tracks are separated from the lightning rods and the continuous metal-coated area by gaps and are in form of sections of conductors lying away from each other.

EFFECT: providing antenna operation in three frequency bands, easier tuning and high lightning safety.

7 cl, 17 dwg