公开(公告)号：US3852681A

公开(公告)日：1974-12-03

申请号：US29312272

申请日：1972-09-28

申请人： PHILIPS CORP

发明人： UNDERHILL M

IPC分类号： H03L7/18 ,  H03B27/00 ,  H03H7/18 ,  H03L7/02 ,  H03B3/04

CPC分类号： H03L7/02

摘要： The output of an oscillator is fed into a delay line and the phase difference across the delay line is compared in a comparator which gives a d.c. signal. This d.c. signal is fed back to control the oscillator. The oscillator will normally sit at one of a number of locking frequencies spaced apart so that the delay line gives a zero phase difference but by applying a compensating d.c. signal the oscillator can be set to any intermediate frequency. A square wave pulse is used to cause the oscillator to jump in frequency to the next locking frequency.

摘要翻译： 将振荡器的输出馈送到延迟线，并且在比较器中比较延迟线两端的相位差，该比较器产生直流。 信号。 这个d.c. 反馈信号来控制振荡器。 振荡器通常位于间隔开的多个锁定频率之一，使得延迟线给出零相位差，而是通过施加补偿直流。 信号振荡器可以设置为任何中频。 使用方波脉冲使振荡器频率跳到下一个锁定频率。