Chinese Journal of Magnetic Resonance ›› 2007, Vol. 24 ›› Issue (4): 494-500.

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A Digital Servo System for Rubidium Frequency Standards

CAO Yuan-hong1,2, ZHANG Xian-yi1,2, KANG Song-bai1,2, ZHONG Da1, MEI Gang-hua1*   

  1. 1.State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics(Wuhan Institute of Physics and Mathematics, the Chinese Academy of Sciences), Wuhan 430071, China; 
    2.Graduate School of the Chinese Academy of Sciences, Beijing 100049, China
  • Received:2007-04-02 Revised:2007-04-23 Online:2007-12-05 Published:2007-12-05
  • About author:*Corresponding author: Mei Gang-hua,Tel:027-87197190,E-mail:mei@wipm.ac.cn.
  • Supported by:

    “973”项目“原子频标物理与技术基础”子课题“铷原子频标的新方法和新技术” (2005CB724507).

Abstract:

Principles of synchronous phase detecting and digital servo for rubidium atomic frequency standards (RAFS) were discussed. A digital servo system for rubidium frequency standards was designed with microcontroller unit, ADC and DAC. Frequency locking of a RAFS using the servo system was realized. The resulting frequency stability reached the level of common commercial RAFS.

Key words: rubidium atomic frequency standard, software phase detecting, digital servo system

CLC Number: