现代电子技术2018，Vol.41Issue(7)：125-129,134,6.DOI:10.16652/j.issn.1004-373x.2018.07.030
精密频率与相位调整方法
Precision frequency and phase adjustment method
王超 1李世光 1夏振华 1于航 1党明朝 1毛新凯1
作者信息
- 1. 北京无线电计量测试研究所,北京100039
- 折叠
摘要
Abstract
The precision frequency and phase adjustment method is a key technology of time keeping system.The direct digital synthesizer(DDS)is used to introduce the precision frequency and phase adjustment amount.The output of DDS is locked at oven controlled crystal oscillator(OCXO)through phase locked loop(PLL). A frequency divider and a two-stage frequency difference multiplication are utilized in PLL to improve the frequency and phase adjustment resolution. The output of the OCXO after PLL locking acts as the signal after frequency and phase precise adjustment. The test system based on phase comparison was designed for frequency and phase adjustment resolution. The experimental results show that the frequency adjustment resolu-tion of the system can reach up to 4×10-17,and the phase adjustment resolution can reach up to 6 fs.关键词
守时系统/直接数字频率合成/频差倍增/频率与相位调整/相位比对/锁相环Key words
time keeping system/DDS/frequency difference multiplication/frequency and phase adjustment/phase com-parison/phase locked loop分类
信息技术与安全科学引用本文复制引用
王超,李世光,夏振华,于航,党明朝,毛新凯..精密频率与相位调整方法[J].现代电子技术,2018,41(7):125-129,134,6.
