FIELD: radio engineering, super heterodyne radio receivers. SUBSTANCE: device has input filter 1, first mixer 2, rejection filter 3, second mixer 4, first and second intermediate- frequency filters 6 and 5, phase shifter 7, heterodyne 8, frequency doubling multiplier 9, quarter phase shifter 10, adder 11, Constituents of mirror noise on inputs of adder 11 have opposite phases. This results in possibility of their compensation. Noise rate is decreased due to serial connection of first and second mixers 2 and 4 and selection of transmission rate of first mixer, which is designed as double balance mixer. transmission rate of first mixer is greater than one, while transmission rate of second mixer equals to one. EFFECT: increased functional capabilities. 1 dwg
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