科研之友
微信
新浪微博
Facebook
分享链接
摘要
A novel frequency-locked loop (FLL) based on the beat method is proposed in this paper. Compared with other frequency feedback loops, this FLL is a digital loop with simple structure and very low noise. As shown in the experimental results, this FLL can be used to reduce close-in phase noise on atomic frequency standards, through which a composite frequency standard with ultra-low phase noise and low cost can be easily realized.
- 出版日期2011-6
- 单位中国科学院武汉物理与数学研究所
