FIELD: radio engineering, communication systems with broadband signals. SUBSTANCE: essence of proposed device consists in that advantage in degree of suppression of parasitic component of noise is determined by relationship of rejection bands of band-pass filter and rejection unit. In this case rejection band of rejection unit is very narrow and does not depend either on speed of information transmission or on depth of parasitic amplitude modulation. EFFECT: enhanced noise immunity to narrow-band and structural noises. 4 dwg
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