Journal of Applied Sciences ›› 2002, Vol. 20 ›› Issue (1): 104-108.
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ZHANG Wei-qun, ZHANG Yi-ping, WANG Guan-zhong, YU Shuang-lin
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Abstract: Active atomic frequency standards, such as hydrogen maser, are characterized by a very good frequency stability. However, they deliver a signal at a power level and at a frequency that are not practical to the users. This paper descries the techniques used to phase lock to the hydrogen maser a standard crystal oscillator at a cardinal frequency.
Key words: atomic hydrogen maser, multiplier, frequency stability, phase locked loop
CLC Number:
TH714.1+4
ZHANG Wei-qun, ZHANG Yi-ping, WANG Guan-zhong, YU Shuang-lin. Phase-locked Loops Used with Atomic Hydrogen Frequency Standard[J]. Journal of Applied Sciences, 2002, 20(1): 104-108.
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https://www.jas.shu.edu.cn/EN/Y2002/V20/I1/104