摘要
频率源作为测控系统的重要组成部分,其短期频率稳定度(短稳)指标是影响测控系统测量精度的重要因素之一。以往系统中应用的频率源的稳定度已不能满足现代测控系统的要求。设计了超高稳频率源,并对其稳定度进行了详细仿真分析,该频率源采用高速鉴相器与超高稳压控恒温晶体振荡器(VCOCXO)组成的精密锁相环路实现,具有低相噪、高稳定度、高可靠性等特点。经测试,超高稳频率源短稳小于1×10-11/20m s,满足系统应用的要求。
The frequency source is an important part of TT＆C system, and its short-term frequency stability target becomes one of the important factors which affect the accuracy of TT＆C system. The stability of the frequency source applied in the previous system does not meet the requirement of modern TT＆C system. Super-high stability frequency source is designed and a particular simulation analysis of stability is done. It is realized by using a precise phase-locked loop consisting of the high speed phase detector and the super-high stability VCOCXO, and it is characterized by low phase noise, high stability, high reliability, etc. The test shows that the short-term stability of the super-high stability frequency source is less than 1 ×10^-11/20ms and it can meet the requirement of system application.
出处
《传感器与微系统》
CSCD
北大核心
2009年第8期92-95,共4页
Transducer and Microsystem Technologies
关键词
频率源
压控恒温晶体振荡器
短期频率稳定度(短稳)
frequency source
voltage controlled oven-controlled crystal oscillator（VCOCXO）
short term frequency stability
