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A low phase noise microwave source for high-performance CPT Rb atomic clock

文献类型：期刊论文

作者Li, Xiaodong1; Yun, Peter1; Li, Qinglin1; Ju, Bowen1; Yu, Shaoshao1,6; Hao, Qiang1; Du, Runchang2; Xu, Feng3; Li, Wenbing4,5,7; Gao, Yuping1
刊名ELECTRONICS LETTERS
出版日期2021-05-26
页码3
ISSN号0013-5194
DOI10.1049/ell2.12222
英文摘要Phase noise of the frequency synthesizer is one of the main limitations to the short-term stability of microwave atomic clocks. Here, a low-noise, simple-architecture microwave frequency synthesizer for a coherent population trapping (CPT) clock is demonstrated. The synthesizer is mainly composed of a 100 MHz oven-controlled crystal oscillator (OCXO), a microwave comb generator, and a direct digital synthesizer (DDS). The absolute phase noises of 3.417 GHz signal are measured to be -55 dBc/Hz, -81 dBc/Hz, -111 dBc/Hz and -134 dBc/Hz, respectively, for 1 Hz, 10 Hz, 100 Hz and 1 kHz offset frequencies, which shows only 1 dB deterioration at the second harmonic of the modulation frequency of the atomic clock. The estimated frequency stability of intermodulation effect is 4.7 x 10(-14) at 1 s averaging time, which is about half order of magnitude lower than that of the state-of-the-art CPT Rb clock. Our work offers an alternative microwave synthesizer for high-performance CPT Rb atomic clock.
WOS关键词FREQUENCY STABILITY
资助项目National Natural Science Foundation of China[U1731132]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000656964800001
出版者WILEY
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
源URL[http://210.72.145.45/handle/361003/10713]  
专题中国科学院国家授时中心
通讯作者Yun, Peter
作者单位1.Chinese Acad Sci, Natl Time Serv Ctr, Xian, Shaanxi, Peoples R China
2.Chengdu Spaceon Technol Co Ltd, Chengdu, Sichuan, Peoples R China
3.China Acad Space Technol Xian, Xian, Shaanxi, Peoples R China
4.Huazhong Univ Sci & Technol, PGMF, Hubei Key Lab Gravitat & Quantum Phys, Wuhan, Hubei, Peoples R China
5.Huazhong Univ Sci & Technol, Sch Phys, Wuhan, Hubei, Peoples R China
6.Univ Chinese Acad Sci, Beijing, Peoples R China
7.Johannes Gutenberg Univ Mainz, PRISMA Cluster Excellence, Mainz, Germany
推荐引用方式
GB/T 7714		 Li, Xiaodong,Yun, Peter,Li, Qinglin,et al. A low phase noise microwave source for high-performance CPT Rb atomic clock[J]. ELECTRONICS LETTERS,2021:3.
APA Li, Xiaodong.,Yun, Peter.,Li, Qinglin.,Ju, Bowen.,Yu, Shaoshao.,...&Zhang, Shougang.(2021).A low phase noise microwave source for high-performance CPT Rb atomic clock.ELECTRONICS LETTERS,3.
MLA Li, Xiaodong,et al."A low phase noise microwave source for high-performance CPT Rb atomic clock".ELECTRONICS LETTERS (2021):3.

入库方式： OAI收割

来源：国家授时中心

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