DEVICE FOR RECEIVING LINEAR FREQUENCY MODULATED WIDE-BAND SIGNALS Russian patent published in 1994 - IPC

FIELD: communication engineering. SUBSTANCE: device has the first, the second and the third receiver 1-3 provided with aerial, the first heterodyne 4, the first, the second and the third mixers 5-7, the first, the second and the third amplifiers 8-10 of the first intermediate frequency, pressing filter 11, frequency detector 12, differentiating unit 13, pulse former 14, solving unit 15, the second heterodyne 16, the fourth mixer 17, intermediate frequency amplifier 18, the first and the second multipliers 19, 20, the first and the second narrow-band filters 21, 22, the first and the second phase detectors 23, 24, quadrature phase shifter 25, the first scaling multiplier 26, the third narrow-band filter 27, the second and the third quadrature phase shifters 28, 29, the second and the third scaling multipliers 30, 31, the fourth and the fifth narrow-band filters 32, 33, the third and the fourth phase detectors 34, 35. EFFECT: improved precision; eliminated ambiguity of direction finding. 2 dwg