AUTOMATIC FREQUENCY CONTROL DEVICE Russian patent published in 1994 - IPC

FIELD: radio signal measurement technology. SUBSTANCE: device has switch 1, counter 2, controlled generator 3, phase-pulse detector 4, first storage register 5, digital-to-analog converter 6, analog-to-digital converter 7, pulse generator 8, adder 9, second storage register 10, subtracter 11, reversing counter 12, control signal shaper 13, and code comparison circuit 14. EFFECT: provision for automatic frequency control during space between input radio pulses due to introduction of feedback compensating for changes in device output frequency by results of comparison with stored reference frequency of input radio pulse. 1 dwg