ULTRA-WIDEBAND DIGITAL ANTENNA ARRAY FOR DETERMINING COORDINATES OF A RADAR TARGET Russian patent published in 2020 - IPC H01Q21/00 

FIELD: antenna equipment.

SUBSTANCE: invention relates to an antenna array. An antenna array for determining radar target coordinates, comprising N radiating elements 4.1-4.N, where N is number of used frequency subranges, wherein distance between adjacent radiating elements is selected equal to half of wavelength corresponding to maximum frequency of used frequencies range, radiating elements are arranged so that signals of different frequency subranges are distributed according to numbers of emitting elements from 1st to Nth according to a certain law, N analog receivers 5.1-5.N, N analogue-to-digital converters 6.1-6.N, measurement results storage device 7, having N+1 inputs and Q=N×P outputs, where P is number of frequencies in one subband, computing device 8 having Q outputs, Q multipliers 9.1-9.N, having two inputs, adder 10 having Q inputs, control device 11 having 4 outputs, and a measurement results display device 12, characterized in that in it the coherent mesh formation system of equidistantly disturbed frequencies is replaced by generator 1 of such grid of frequency subbands ΔF₁, ΔF_{2, …}, ΔF_N, that each frequency ƒ_ij ≠ kƒ_nl, k ∈ Z; i, ; j, , having N outputs, N broadband digital-to-analogue converters 2.1-2.N are introduced, which inputs are connected to corresponding outputs of shaper 1, N devices 3.1-3.N are introduced, switching gears of transmission and reception of signals connected to corresponding outputs of digital-to-analogue converters 2.1-2.N, which outputs are connected to corresponding N radiating elements 4.1-4.N, other outputs of which are connected to corresponding inputs of N analog receivers 5.1-5.N, which outputs are connected to corresponding inputs of N analogue-to-digital converters 6.1-6.N, outputs of each of which are connected to corresponding N inputs of measurement results storage device 7, Q outputs of which are connected to corresponding inputs of Q multipliers 9.1-9.N, which outputs are connected to corresponding Q inputs of summing device 10, output of which is connected to control device 11, one of which outputs is connected to device for displaying measurement results 12, other outputs of control device 11 are connected to corresponding inputs of measurement results storage device 7, computing device 8, Q outputs of which are connected to Q multipliers, and grid generator 1 of frequency subranges ΔF₁, ΔF_2,…, ΔF_N, N outputs of which are connected to corresponding inputs of N digital-to-analogue converters 2.1-2.N.

EFFECT: antenna array for determining coordinates of a radar target is disclosed.

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