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

doi:10.1049/ell2.12222

NTSC-IR

	A low phase noise microwave source for high-performance CPT Rb atomic clock
	Li, Xiaodong 1; Yun, Peter 1; Li, Qinglin 1; Ju, Bowen 1; Yu, Shaoshao 1,6; Hao, Qiang 1; Du, Runchang 2; Xu, Feng 3; Li, Wenbing 4,5,7; Gao, Yuping 1; Zhang, Shougang 1
	2021-05-26
发表期刊	ELECTRONICS LETTERS
ISSN	0013-5194
页码	3
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.
资助者	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
DOI	10.1049/ell2.12222
关键词[WOS]	FREQUENCY STABILITY
语种	英语
资助项目	National Natural Science Foundation of China[U1731132]
资助者	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
WOS研究方向	Engineering
WOS类目	Engineering, Electrical & Electronic
WOS记录号	WOS:000656964800001
出版者	WILEY
引用统计
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/10714
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.