DEVICE FOR SEPARATION OF TWO frequency-modulated signals overlapping spectrum Russian patent published in 1996 - IPC

FIELD: radio engineering, radio receivers, instruments. SUBSTANCE: device has input rejection filter 1, receiving channels 2 and 3, which have input band-pass filters 4 and 5, units 6 and 7, which estimates frequency-modulated signal characteristics, modulation oscillators 8 and 9, variable gain gates 10 and 11 and tuned oscillators 12 and 13. Two frequency - modulated signals are separated by tuning oscillators 12 and 13 to carrier frequency of corresponding frequency-modulated signals and by harmonic modulation of these oscillators according to modulation index values which are calculated in units 6 and 7 estimating frequency-modulated signal characteristics. EFFECT: increased functional capabilities. 3 dwg