DIGITAL INTERFERENCE COMPENSATOR Russian patent published in 2000 - IPC

FIELD: radio engineering. SUBSTANCE: invention is related to suppression equipment used in radio engineering systems for suppression of interference coming by side lobes of antenna radiation pattern and in some other systems correcting undesirable signals. Digital compensator of interference coming by side lobes of antenna radiation pattern has auxiliary antenna, complex interface, first multiplier, first adder of selections, divider, second multiplier and subtracter connected in series and basic antenna, third multiplier, second adder of selections linked with its output to second input of divider connected in series. Signal from auxiliary antenna goes to second inputs of first and second multipliers, signal from complex interface goes to second input of third multiplier. Specific feature of invention lies in addition of second and third auxiliary antennas and second and third subtracters. Input of third multiplier is disconnected from basic antenna and is connected to output of second subtracter to which inputs signals from outputs of first and second auxiliary antennas are fed. Input of first multiplier is disconnected from first auxiliary antenna and is connected to output of third subtracter to which inputs signals from outputs of second and third auxiliary antennas go. Input of complex interface is disconnected from first auxiliary antenna and is connected to output of third subtracter. Output of first subtracter is output of interference suppressor. EFFECT: enhanced efficiency of interference suppression by exclusion of effect of components of legitimate signal penetrating into auxiliary antennas on formation of weight coefficient. 2 dwg