MULTI-BEAM ADAPTIVE ANTENNA ARRAY Russian patent published in 2007 - IPC H01Q3/26 

FIELD: radio engineering, possible use for spatial processing of signals in receiving antenna arrays.

SUBSTANCE: device contains (N+1) channels, each one of which includes serially connected emitter, amplifier, narrowband filter and alternating delay line, adder, N subtracting elements, decorrelator and interference suppression block. Each output of alternating delay line is connected to corresponding adder output. Output of first alternating delay line is simultaneously connected to each positive input of subtracting elements, negative input of which is connected to output of corresponding alternating delay line, starting from the second one. Outputs of subtracting elements are connected to corresponding input of decorrelator, outputs of which and the input of adder are connected to corresponding inputs of interference suppression block. In accordance to invention, decorrelator has an (N+1) number input, connected to adder output, and contains m channels, first one of which includes correlator-adder, second one - serially connected correlator-adder and single-channel compensator, and the rest - serially connected correlator-adder and two single-channel compensators. Main input of first single-channel compensator of each channel is connected to output of correlator-adder. And main input of the second one is connected to signal output of first single-channel compensator. First input of correlator-adder of first channel is connected to (N+1) input of decorrelator. Output of its P number channel is connected simultaneously to first input of correlator-adder of (P+1) number channel, to compensation input of first single channel compensator of (P+1) number channel and to compensation input of the second single-channel compensator of (P+2) number channel. Each input of decorrelator is connected to corresponding second inputs of all correlator-adders, each one of which contains N single-channel compensators and a second adder, output of which is the output of correlator-adder. Its first input of simultaneously connected to main inputs of single-channel compensators, compensation inputs of which are respectively connected to second inputs of correlator-adder, and weighted outputs - to corresponding input of the second adder.

EFFECT: increased signal/noise ratio at output of multi-beam adaptive antenna array, decreased hardware resource costs with number of interference signals m<(N+1)/2.

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