stable oscillator

The Design of Highly Stable Phase Locked Microwave Dielectric Resonator Oscillator

高稳定锁相介质振荡器微波源的设计

The designed DCXO adopts Pierce architecture. The frequency drift correction is done by using a 6-bit automatic frequency control ( AFC) signal generated by the feedback correction loop between the oscillator and the base band. The long term stable frequency output has been obtained.

所设计的数控晶体振荡器采用Pierce结构，利用基带与振荡器的反馈环路产生的6位自动频率控制信号，对振荡器的频率漂移进行校准，能得到长期稳定的频率输出。

Owing to GPS clock, which has no accumulative error, and quartz oscillator, which is very stable, the time counting value is obtained without delay via hardware by combining high speed sampling and PPS ( Pulse Per-Second)-snapping.

利用GPS时钟无累计误差和高精度晶振频率稳定性高的特点，并将高速采样与秒脉冲捕捉有机结合，通过硬件方式无延时地捕捉秒脉冲以获取精确的时间计数值。