一种宽频率调节的精密OCXO

doi:10.3969/j.issn.1001-2400.2014.05.034

Abstract

Abstract:

When precision standard frequency control devices are used, we always need controllable crystal oscillators that not only can be regulated in a wide frequency range, but also can maintain high frequency stability and low phase noise. In order to realize the wide frequency range, we have to use the crystal oscillator which shows good pull ups, but at the same time poor frequency stabilities and aging. High precision Oven-Controlled Crystal Oscillator(OCXO) based on SC cut overtone crystals can show very high frequency stability and low aging. However, its frequency regulation range by voltage control is not wide. When it is phase locked and controllable, it can not be used. In connection with a wider frequency regulation range, a new method is proposed through the regulation of the control temperature of the OCXO. In this way, all the good performances of the precision OCXO can be kept, and the original 10^-7 order voltage-controllable frequency range is improved to 5×10^-6 or even wider at the same time. Then it can be used in the frequency source which needs to be stably locked for a long time such as an on-board atomic clock,to ensure the stable and excellent indexes of the system.

Key words: oven-controlled crystal oscillator, frequency stability, temperature control, wide frequency range

CLC Number:

TM935.11

BAI Lina;ZHOU Wei;REN Junqi. Wide frequency-regulated Precision OCXO[J].J4, 2014, 41(5): 203-206.

References

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Wide frequency-regulated Precision OCXO

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