一种用于铷原子频标的小型化低噪声10 MHz晶体振荡器设计  

Design of a Miniaturized Low Noise 10 MHz Crystal Oscillator for Rubidium Atomic Frequency Standard

作　　者：万文杰 邱紫敬 祁峰 梅刚华[1] 钟达[1] WAN Wen-jie;QIU Zi-jing;QI Feng;MEI Gang-hua;ZHONG Da(CAS Key Laboratory of Atomic Frequency Standards(Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences),Wuhan 430071,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院原子频标重点实验室(中国科学院精密测量科学与技术创新研究院),湖北武汉430071 [2]中国科学院大学,北京100049

出　　处：《波谱学杂志》2022年第4期467-475,共9页Chinese Journal of Magnetic Resonance

基　　金：国家重大科技工程项目.

摘　　要：本文设计了一种应用于铷原子频标的小型化低噪声石英晶体振荡器,其振荡电路采用柯尔匹兹并联形式和SC切晶体谐振器.基于Leeson模型对石英晶体振荡器相位噪声进行分析,并利用ADS射频仿真软件对振荡电路进行仿真模拟,为振荡器设计与调试提供指导.最终实现体积为22 mm×28.5 mm×13 mm低噪声晶体振荡器,它具有良好的相位噪声特性,其近端相噪为−102.7 dBc/Hz@1 Hz、远端相噪为−164.2 dBc/Hz@10 kHz,且实测短期频率稳定度为1.73×10^(−12)/s.A miniaturized low noise quartz crystal oscillator for rubidium atomic frequency standard(RAFS)was designed in this paper,with the oscillation circuit applying Colpitts parallel configuration and SC-cut crystal resonator.The phase noise of quartz crystal oscillator was analyzed based on Leeson model,and the oscillation circuit was simulated by using ADS software,which can provide guidance for oscillator design and debugging.Finally,a low noise crystal oscillator with volume of 22 mm×28.5 mm×13 mm has been completed.Test results show that it reached the phase noise of −102.7 dBc/Hz@1 Hz and −164.2 dBc/Hz@10 kHz,and the short-term stability of 1.73×10^(−12)/s.

关 键 词：晶体振荡器 铷原子频标 相位噪声 频率稳定度 

分 类 号：O482.53[理学—固体物理]