高稳双层恒温晶振的设计

doi:10.16180/j.cnki.issn1007-7820.2019.07.007

Abstract

Abstract:

In order to improve the temperature-frequency characteristics of OCXO, high stability double oven control crystal oscillator was designed. The temperature control system used double oven structure and improved the design through multipoint inducting and heating, which greatly improved the temperature-frequency characteristics. At the same time, the circuit used SC-cut crystal resonator and Colpitts capacitor three-point oscillating circuit to improve the short-term frequency stability of the product. According to the test, the frequency temperature characteristic and short term stability reached <±2E ^-10(-30~+70℃)and <1E ^-12/s respectively, which were both improved by an order of magnitude compare to similar products. Meanwhile, the aging characteristic was up to <5E ^-11/day.

Key words: high stability, SC cut crystal resonator, double oven control, temperature-frequency characteristics, low ageing, short term frequency stability

CLC Number:

TN753.9

NIU Zhanlu,SU Zhangzhan,CHEN Pingping. Deign of High-Stability DOCXO[J].Electronic Science and Technology, 2019, 32(7): 33-37.

Figures/Tables 11

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References 16

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项目	指标
频率温度稳定度	±1.2×10^-10
短稳(Allan)	4.5×10^-13/s
老化率	2.7×10^-11/日
外形尺寸	50×50×19 mm
工作温度	-30~+70 ℃

Deign of High-Stability DOCXO

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