DATA TRANSMITTING AND RECEIVING DEVICE USING LINEAR FREQUENCY-MODULATED SIGNALS AT MULTIBEAM PROPAGATION OF RADIO WAVES Russian patent published in 1997 - IPC

FIELD: radio engineering digital data radio transmitting systems. SUBSTANCE: device has on sending end NOT gate 1, AND gates 2,3, pulse shapers 4,5, shaping linear frequency-modulation filters 6,7, adder 8, transmitter 9; on receiving end it has receiver 10, matched linear frequency-modulation filters 11,12, adder 16, clock synchronizer 21, first comparator 25. Newly introduced on sending end are code converter 29, square- pulse generator 28, multiplier 30; on receiving end, first, second multipliers 13,14, first, second delay lines 14,17, first, second low-frequency filters 18,19, first, second switches 20,22, first, second integrators 23,24, second comparator 26, and multiplexor 27. EFFECT: improved noise immunity at multibeam propagation of radio waves. 2 cl, 2 dwg