Chinese Journal of Magnetic Resonance ›› 2022, Vol. 39 ›› Issue (4): 467-475.doi: 10.11938/cjmr20222973

• Short Communications • Previous Articles     Next Articles

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

Wen-jie WAN1,2,*(),Zi-jing QIU1,Feng QI1,Gang-hua MEI1,Da ZHONG1,*()   

  1. 1. CAS Key Laboratory of Atomic Frequency Standards (Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences), Wuhan 430071, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2022-01-20 Online:2022-12-05 Published:2022-03-11
  • Contact: Wen-jie WAN,Da ZHONG E-mail:wanwj@apm.ac.cn;zhongda@apm.ac.cn

Abstract:

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.

Key words: crystal oscillator, rubidium atomic frequency standard, phase noise, frequency stability

CLC Number: