High-performance frequency reference based on cryogenic sapphire oscillator.

IF 1.7 4区 工程技术 Q3 INSTRUMENTS & INSTRUMENTATION
Encai Zhong, Yan Zheng, Jinxu Hong, Mingming Liu, Yijun Luo, Hongli Liu, Ke Deng, Jie Zhang, Zehuang Lu
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引用次数: 0

Abstract

Precision measurement experiments require high-performance frequency references that have ultra-low phase noise and excellent frequency stability. In conjunction with phase noise cancellation and frequency synthesis technologies, we expect cryogenic sapphire oscillators to serve as microwave frequency references. To this end, we employed a cryogenic sapphire filter to reduce the phase noise of the cryogenic sapphire oscillator, thereby achieving the generation of a 10.798 GHz microwave signal with ultra-low phase noise of up to -165 dBc/Hz at an offset frequency of 1 MHz. Furthermore, to take full advantage of the excellent frequency stability, we designed a frequency conversion chain generating reference frequencies at 9 GHz, 100 MHz, and 10 MHz, achieving fractional frequency stability in the low 10-15 range for integration times between 100 and 1000 s. Such a signal source can become the frequency reference of choice for many scientific applications.

基于低温蓝宝石振荡器的高性能频率基准。
精密测量实验需要具有超低相位噪声和极好的频率稳定性的高性能频率基准。结合相位噪声消除和频率合成技术,我们期望低温蓝宝石振荡器作为微波频率参考。为此,我们采用低温蓝宝石滤波器来降低低温蓝宝石振荡器的相位噪声,从而实现在1 MHz的偏移频率下产生10.798 GHz的超低相位噪声高达-165 dBc/Hz的微波信号。此外,为了充分利用优异的频率稳定性,我们设计了一个频率转换链,产生9 GHz, 100 MHz和10 MHz的参考频率,在100到1000秒的积分时间内,在低10-15范围内实现分数频率稳定性。这种信号源可以成为许多科学应用的频率参考选择。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Review of Scientific Instruments
Review of Scientific Instruments 工程技术-物理:应用
CiteScore
3.00
自引率
12.50%
发文量
758
审稿时长
2.6 months
期刊介绍: Review of Scientific Instruments, is committed to the publication of advances in scientific instruments, apparatuses, and techniques. RSI seeks to meet the needs of engineers and scientists in physics, chemistry, and the life sciences.
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