FIELD: radio engineering. SUBSTANCE: bispiral aerial includes two cylindrical spirals with opposite run of winding placed perpendicular to metal screen. Distance between axes, number of turns, angle of winding and diameters of spirals are chosen from proposed relation. With feed to aerial of control signal with phase shift from 0 to 2π polarization plane turns from 0 to p with keeping of ellipticity coefficient between 0 and 0.05 which is indicative of turn of polarization plane of linearly polarized emission. EFFECT: bispiral aerial can be used element of phased array, as pickup for measurement of characteristics of aerial. 4 dwg
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