METHOD OF FORMING DIRECTIONAL PATTERN, RELATIVE GEOMETRICAL CENTRE OF APERTURE OF PHASED ANTENNA ARRAY Russian patent published in 2009 - IPC H01Q3/26 

FIELD: physics.

SUBSTANCE: invention relates to electronically steerable phased antenna arrays (PAA), particularly to beam control systems and directional pattern (DP) formation systems. According to the method, the required phase shift φ_ij of a phased antenna array element is calculated by adding components of angular phase deviation φ_xi, φ_yj to coordinates of element ij in the aperture of the phased antenna array and individual phase support F_ij. The method is distinguished by that, it contains additional components of angular phase deviation calculated for coordinates of the geometrical centre of the aperture of the phased antenna array I(_GC), J(_GC) with opposite signs to values φ_xi, φ_yj respectively, such that, the phase distribution centre of the directional pattern always coincides with the geometrical centre of the aperture of the phased antenna array. The origin of coordinates for calculating required phase shifts φ_ij of phased antenna array elements are selected at the initial section of the aperture of the phased antenna array, for example, at the intersection of the zero row J₀ and zero column I₀ of the coordinate grid of elements in the aperture.

EFFECT: increased resolution of phased antenna array beam scanning with formation of its directional pattern relative the geometrical centre of the aperture of the phased antenna array.

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