demonstrationofasubsamplingphaselockloopbasedmicrowavesourceforreducingdickeffectinatomicclocks

NTSC-IR > 量子频标研究室

	demonstrationofasubsamplingphaselockloopbasedmicrowavesourceforreducingdickeffectinatomicclocks
	Li Wenbing 1; Hao Qiang 2; Du Yuanbo 1; Huang Shaoqing 1; Yun Peter 2; Lu Zehuang 1
	2019
发表期刊	chinesephysicsletters
ISSN	0256-307X
卷号	36 期号:7
摘要	We demonstrate a simple scheme of 6.835 GHz microwave source based on the sub-sampling phase lock loop (PLL). A dielectric resonant oscillator of 6.8 GHz is directly phase locked to an ultra-low phase noise 100MHz oven controlled crystal oscillator (OCXO) utilizing the sub-sampling PLL. Then the 6.8 GHz is mixed with 35MHz from an direct digital synthesizer (DDS) which is also referenced to the 100MHZ OCXO to generate the final 6.835 GHz signal. Benefiting from the sub-sampling PLL, the processes of frequency multiplication, which are usually necessary in the development of a microwave source, are greatly simplified. The architecture of the microwave source is pretty simple. Correspondingly, its power consumption and cost are low. The absolute phase noises of the 6.835 GHz output signal are-47 dBc/Hz,-77 dBc/Hz,-104 dBc/Hz and-121 dBc/Hz at 1 Hz, 10 Hz, 100 Hz and 1 kHz offset frequencies, respectively. The frequency stability limited by the phase noise through the Dick effect is theoretically estimated to be better than 5.0 × 10~(-14)τ ~(1/2) when it is used as the local oscillator of the Rb atomic clocks. This low phase noise microwave source can also be used in other experiments of precision measurement physics.
语种	英语
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/9798
专题	量子频标研究室
作者单位	1.华中科技大学 2.中国科学院国家授时中心
推荐引用方式 GB/T 7714	Li Wenbing,Hao Qiang,Du Yuanbo,et al. demonstrationofasubsamplingphaselockloopbasedmicrowavesourceforreducingdickeffectinatomicclocks[J]. chinesephysicsletters,2019,36(7).
APA	Li Wenbing,Hao Qiang,Du Yuanbo,Huang Shaoqing,Yun Peter,&Lu Zehuang.(2019).demonstrationofasubsamplingphaselockloopbasedmicrowavesourceforreducingdickeffectinatomicclocks.chinesephysicsletters,36(7).
MLA	Li Wenbing,et al."demonstrationofasubsamplingphaselockloopbasedmicrowavesourceforreducingdickeffectinatomicclocks".chinesephysicsletters 36.7(2019).