一种小型化铷原子钟锁相倍频窄带VCO 设计

陈涛1–3; 孙兵锋1; 2; 阎世栋1; 梅刚华1; 钟达1*

doi:10.11938/cjmr20140413

波谱学杂志 >

2014 , Vol. 31 >Issue 4: 587 - 595

DOI: https://doi.org/10.11938/cjmr20140413

研究论文

一种小型化铷原子钟锁相倍频窄带VCO 设计

陈涛1–3 ,
孙兵锋1 ,
2 ,
阎世栋1 ,
梅刚华1 ,
钟达1*

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1. 中国科学院武汉物理与数学研究所，中国科学院原子频标重点实验室，湖北武汉 430071；
2. 中国科学院大学，北京100049；
3. 武汉工商学院公共基础部，湖北武汉 430065

陈涛(1989-)，男，湖北武汉人，硕士研究生，现任武汉工商学院基础课部教师，无线电物理专业. *通讯联系人：钟达，电话：027-87198726，E-mail: zhongda@wipm.ac.cn.

收稿日期: 2014-03-17

修回日期: 2014-10-29

网络出版日期: 2014-12-05

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Design of a Narrow-Band Voltage Controlled Oscillator for Phase-Locked Frequency Multiplier in Miniature Rubidium Atomic Clock

CHEN Tao1–3 ,
SUN Bing-feng1 ,
2 ,
YAN Shi-dong1 ,
MEI Gang-hua1 ,
ZHONG Da1*

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1. CAS. Key laboratory of Atomic Frequency Standards (Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences), Wuhan 430071, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Basic Department, Wuhan Technology and Business University, Wuhan 430065, China

*Corresponding author：ZHONG Da, Tel: 027-87198726, E-mail: zhongda@wipm.ac.cn.

Received date: 2014-03-17

Revised date: 2014-10-29

Online published: 2014-12-05

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摘要

设计了一款用于小型化铷原子钟锁相倍频器的窄带VCO(压控振荡器)电路．振荡电路采用了稳定性好的克拉泼电路方案．应用仿真软件对该电路进行仿真分析和优化设计．最终设计出的VCO 电路主要性能指标为：输出频率范围为440 MHz~470 MHz，频率调谐灵敏度为18 MHz/V，二次谐波抑制度为-15 dBc，由其构成的锁相倍频器实现了低相噪设计要求，使小型化铷原子钟具备了实现高的频率稳定度潜力．

关键词： 铷原子钟; 窄带VCO; 锁相倍频; 相位噪声

本文引用格式

陈涛1–3 , 孙兵锋1 , 2 , 阎世栋1 , 梅刚华1 , 钟达1* . 一种小型化铷原子钟锁相倍频窄带VCO 设计[J]. 波谱学杂志, 2014 , 31(4) : 587 -595 . DOI: 10.11938/cjmr20140413

Abstract

A narrow-band voltage controlled oscillator (VCO) circuit for phase-locked frequency multiplier in rubidium atomic clock was designed. A clapp oscillation circuit scheme was used in the design. The design of the VCO was analyzed and optimized by simulation. A true VCO circuit was constructed and tested. The performance specifications of VCO were as following: frequency covering 440~470 MHz, tuning sensitivity 18 MHz/V and second harmonic suppression -15 dBc. The phase-locked frequency multiplication system was found to have a low phase noise meeting the requirement of the miniature rubidium atomic clocks.

Key words： rubidium atomic clocks; narrow band voltage controlled oscillator; phaselocked frequency multiplication; phase noise

参考文献

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[8] Liu Jing(刘静), Sun Bing-feng(孙兵锋), Yan Shi-dong(阎世栋), et al. A method for microwave frequency multiplication in miniaturized rubidium atomic clocks(一种微波倍频方案在小型化铷钟的应用)[J]. Chinese J Magn Reson(波谱学杂志), 2013, 30(4): 559－565

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