FIELD: radio engineering; antenna-feeder assemblies, primarily small-size broad-band antennas. SUBSTANCE: device has helix antenna assembled of conductors which are arranged in one plane to form bifilar helix. Two antenna members are arranged in mentioned plane and differentially connected to conductors of extreme turns of bifilar helix. Bifilar helix is rectangular in shape made in the form of line sections with straight corners of turns. Each antenna member is made in the form of equilateral trapezium and connected to conductor lead at apex of smaller base of equilateral trapezium. Bases of equilateral trapeziums are parallel to line sections of bifilar helix. EFFECT: improved performance characteristics. 14 cl, 5 dwg
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