SYSTEM FOR TRANSMISSION AND RECEPTION OF SIGNALS WITH SIMULTANEOUS AMPLITUDE AND FREQUENCY MODULATION Russian patent published in 1994 - IPC

FIELD: radio engineering. SUBSTANCE: system has signal source 1, frequency modulators 2, 17, amplitude modulators 3, 16, frequency discriminator 4, amplitude detector 5, adder 6, amplitude converters 7, 14, cosine converters 8, 15, generator 9, multipliers 10, 11, phase inverter 12, phase discriminators 13, 22, variable phase inverters 18, 19, low-pass filters 20, 21, preselector 26, mixers 27, 29, intermediate frequency amplifiers 28, 30, 32, 33, synthesizer 31 of frequency spectrum. EFFECT: enhanced operational stability, expanded application field. 1 dwg