FIELD: antenna equipment.
SUBSTANCE: invention relates to antenna engineering and serves as an antenna element for constructing two-channel in-phase antenna arrays. Disclosed is a dual-band dual-polarization antenna cell comprising an antenna web formed by square horn elements formed by a stepped transition connected to a square waveguide comprising built-in protrusions, wherein the square waveguide is diagonally displaced relative to the two axes of symmetry of the square horn element and is excited from the end wall by rectangular slots tuned to the frequencies of the receiving and transmitting channels, respectively, each slit is excited by means of a waveguide-microstrip junction; the said junctions are combined in parallel by means of a frequency-separated power supply system in the form of an adder and a divider.
EFFECT: simultaneous operation in two spaced apart ultra-wide bandwidths, common aperture for frequencies of separated reception and transmission channels, provision of ellipticity coefficient of not less than 0.85 at orthogonal circular polarisations of reception and transmission channels.
1 cl, 11 dwg
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