公开(公告)号：US06621356B2

公开(公告)日：2003-09-16

申请号：US10113632

申请日：2002-03-27

申请人： Edmund Götz ,  Bernd Memmler ,  Günter Schönleber

发明人： Edmund Götz ,  Bernd Memmler ,  Günter Schönleber

IPC分类号： H03L700

CPC分类号： H03L7/1976 ,  H03L7/0898 ,  H03L7/107 ,  H03L7/1972

摘要： In order to shorten the transient recovery duration, the phase-locked loop has a voltage-controlled oscillator providing an oscillator signal to a first frequency divider. The first frequency divider divides the frequency of the oscillator signal, generates a first divider output signal therefrom, and passes it to a phase comparator during the transient recovery duration of the phase-locked loop. Furthermore, a unit is provided, which, after the transient recovery duration of the phase-looped loop, divides the frequency of the first divider output signal and passes it to the phase comparator. The phase comparator compares the first divider output signal with a first reference signal during the transient recovery duration. The phase comparator compares the divided divider output signal with a second reference signal after the transient recovery duration. The output of the phase comparator is connected to the voltage-controlled oscillator via a controllable charge pump.

摘要翻译： 为了缩短瞬态恢复持续时间，锁相环具有向第一分频器提供振荡器信号的压控振荡器。 第一分频器分频振荡器信号的频率，从其产生第一分频器输出信号，并在锁相环的瞬态恢复持续时间期间将其传送到相位比较器。 此外，提供了一个单元，其在相环环路的瞬态恢复持续时间之后，划分第一分频器输出信号的频率并将其传递给相位比较器。 相位比较器在瞬态恢复持续时间期间将第一分频器输出信号与第一参考信号进行比较。 相位比较器将分频分频器输出信号与瞬态恢复持续时间之后的第二参考信号进行比较。 相位比较器的输出通过可控电荷泵连接到压控振荡器。