FIELD: radio engineering, communication.
SUBSTANCE: device includes, connected in series, a peak detector (15), a comparator (13) and a switch (14), the output of which is connected to the second input of an adder (5), the output of a dither signal (1) former is connected to the second input of the switch; furthermore, the output of the input circuit unit and a preselector (4) is connected to the input of the peak detector (15). This enables to increase the maximum unlimited level of the blocking signal by introducing switch control of the amplitude of the dither signal, wherein a control signal is generated based on the peak detector which measures maximum deviation of the input signal of an analogue-to-digital converter from the zero level.
EFFECT: high dynamic block range while maintaining selectivity parameters of a radio receiving device.
2 dwg
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