INTERFERENCE SUPPRESSION DEVICE

FIELD: radio equipment.SUBSTANCE: invention relates to radio engineering and can be used for suppression of signals (interference) arriving along side lobes of antenna beam pattern (ABP). Interference suppression device comprises series-connected first auxiliary antenna, first phase shifter, third subtractor, complex conjugation device, first multiplier, a first adder unit, a divider, a second multiplier and a first subtractor whose second input is connected to the output of the second subtractor, wherein inputs of the second subtractor are connected to the output of the primary antenna and the output of the first phase shifter, and series-connected second subtractor, third multiplier, second sampler, output of which is connected to second input of divider, second inputs of first and second multipliers are connected to output of third subtractor, second input of third subtracting device is connected to output of second phase shifter, input of which is connected to second auxiliary antenna output, and second input of third multiplier is connected to output of complex conjugation device. Interference suppression device also includes a third auxiliary antenna, a third phase shifter and a fourth subtractor, wherein the input of the third phase shifter is connected to the output of the third auxiliary antenna, and the output is connected to the first input of the fourth subtractor, second input of fourth subtracting device is connected to output of second phase shifter, at that input of complex conjugation device and input of first multiplier are disconnected from output of third subtracting device and connected to output of fourth subtractor, and the input of the third multiplier is disconnected from the output of the second subtractor and is connected to the output of the third subtractor. Output of the first subtractor is the output of the interference suppression device.EFFECT: high level of interference suppression.1 cl, 2 dwg Изобретение относится к радиотехнике и может быть использовано для подавления сигналов (помех), поступающих по боковым лепесткам диаграммы направленности антенны (ДНА). Техническим результатом изобретения является повышение уровня подавления помех. Устройство подавления помех содержит последовательно включенные первую вспомогательную антенну, первый фазовращатель, третье вычитающее устройство, устройство комплексного сопряжения, первый умножитель, первый сумматор выборок, делитель, второй умножитель и первое вычитающее устройство, вт