HORN ANTENNA Russian patent published in 2007 - IPC H01Q13/02 

FIELD: antenna engineering.

SUBSTANCE: antenna horn has latticed side walls, excitation unit in the form of H-waveguide, and two exponential H-shaped projections whose width S increases toward horn aperture to size S = 10t, where t is H-waveguide projection width; latticed side walls are made in the form of bars in diameter D = (0.01 - 0.11) λ_max, where λ_max is maximal wavelength of operating band; bar-to-bar distance d varies from first bar disposed in horn aperture obeying geometrical progression law using denominator τ = 0.7 - 0.73 and bar length l varies obeying same law using denominator g = 0.895 - 0.905, that is, d_{n + 1} = d_nτ and l_{n + 1} = l_ng, where n is bar ordinal number. Top and bottom surfaces of horn are bent at attachment points of bars.

EFFECT: ability of regulating directivity pattern width in operating frequency band.

1 cl, 2 dwg