PHASE METHOD nulling directed flat phased array antenna

摘要

FIELD: radio engineering and communications.;SUBSTANCE: invention relates to antenna engineering. Method of forming nulling pattern (NP) in flat phased antenna array (PAA) involves estimating the level of the initial directional pattern of N-element PAA, selecting in the aperture two M-element sub-arrays and making phase adjustments, with a minus sign for elements of one sub-array and with a plus sign for elements of another sub-array. For formation of caving in NP flat phased antenna array in several directions assessment of initial directional pattern of N-element PAA is carried out in to preset directions, which specify two angular coordinates θ_{dir i} and φ_{dir i}, is selected to equivalent linear openings, angles of which are equal to values of coordinates to the directions φ_{dir i}, the excitation of these openings, after extraction in each equivalent linear aperture two M-element sub-arrays arranged on its edges, their phase adjustments are selected equal to absolute value from the condition of preset depth, width and coordinates θ_{dir. i} failure. Phase adjustments, calculated for formation of failures, the elements of phased antenna array, forming the equivalent linear aperture, provided that M-element sub-arrays K equivalent linear openings mismatched PAA elements are formed, where θ_{dir i} and φ_{dir i} -given direction in the spherical coordinate system, and θ_{dir. i} is counted from the normal to plane of the aperture PAA; i is serial number and i = 1…K; K is the number of preset directions.;EFFECT: technical result consists in formation caving in NP flat PAA in several directions with angular coordinates in spherical pre-setting system.;1 cl, 22 dwg