| 摘要 |
PURPOSE:To minimize noise electric power caused by phase jitter and input noise, by controlling parameters of the phase synchronizing circuit digitally. CONSTITUTION:The input signal input from terminal 1 is input to phase comparing circuit 2 together with the output signal of variable frequency oscillating circuit 4, and a phase error signal is output. This phase error signal is applied to oscillating circuit 4 through loop filter 3 to control the phase of output signal and is input to coefficient controlling circuit 7 which outputs coefficient values to loop filter 3 and digital filter 5. |
