| 摘要 |
In an extending process for pull-in range of P.L.L., the main, auxiliary phase comparator(1,5), the main, auxiliary slicer (6,7), phase shifter(4), low pass filter(2), flip-flop(8), integrator(10), amplifier(11), adder(12) and the voltage controlled oscillator are constituted as in fig.5. The moment the output of auxiliary phase comparator is positive, the output of main comparator is registered in flip-flop. During the its output is positive, the registered state is integrated and added to the input of VCO(3). After phase is locked, the switch is closed.
|
