西安电子科技大学学报（自然科学版）2017，Vol.44Issue(5)：109-113,5.DOI:10.3969/j.issn.1001-2400.2017.05.019
相位差群特性下的频率控制技术
Frequency signal control based on the characteristic of the phase difference group
摘要
Abstract
Based on thecontinuous character of the phase difference group between frequency signals of different nominal values,a method for direct digital phase lock between the different nominal value signals is proposed.The A/D converter is utilized to extract digital voltage value of the controlled frequency signal, whichreflects the phaseinformation.The switch point of the gate is generated by extracting the zero-crossing digital voltage value,then the frequency offset is obtained,on the basis of which the control voltage is obtained to control VCOCXO,and the frequency is locked.The experiment shows that the noise brought by the common complex circuit is reduced because of the simplified frequency transformation circuits,so that high precise locking is realized.The short term stability can reach the 10-12/s order of magnitude,and the phase noise index is good.关键词
频率控制/相位差群/锁相环/频率稳定度Key words
frequency control/phase difference group/phase locked loop/frequency stability分类
信息技术与安全科学引用本文复制引用
贾兆旻,李智奇,杨旭海,孙保琪,苗苗,董绍锋..相位差群特性下的频率控制技术[J].西安电子科技大学学报（自然科学版）,2017,44(5):109-113,5.基金项目
国家自然科学基金资助项目(61201288,11403017,11503019,11173026) （61201288,11403017,11503019,11173026）
