高稳双层恒温晶振的设计

doi:10.16180/j.cnki.issn1007-7820.2019.07.007

电子科技 ›› 2019, Vol. 32 ›› Issue (7): 33-37.doi: 10.16180/j.cnki.issn1007-7820.2019.07.007

高稳双层恒温晶振的设计

牛占鲁,苏章站,陈萍萍

中国电子科技集团第十三研究所,河北石家庄 050051

收稿日期:2018-07-24 出版日期:2019-07-15 发布日期:2019-08-14
作者简介:牛占鲁(1978-),男,工程师。研究方向:晶体振荡器及时频技术。
基金资助:
河北省工程实验室-恒温晶振技术冀发改技术([2011]1859);石家庄市科学技术研究与发展计划(176131027A)

Deign of High-Stability DOCXO

NIU Zhanlu,SU Zhangzhan,CHEN Pingping

The 13 ^th Research Institute,China Electronics Technology Group Corporation,Shijiazhuang 050051,China

Received:2018-07-24 Online:2019-07-15 Published:2019-08-14
Supported by:
Engineering Laboratory of Hebei-OCXO Technology([2011]1859);Science Technology Research and Development Plan of Shijiazhuang(176131027A)

摘要/Abstract

摘要：

为了提高晶体振荡器的温频特性,设计了双层恒温高稳定度晶体振荡器。振荡器温控系统采用双层控温结构,通过多点加热和多点感温的方式,改进了恒温槽的设计,极大地改善了产品的频率温度稳定度。同时电路采用SC切晶体谐振器和Colpitts电容三点式振荡电路,提高了产品的短期频率稳定度。通过实际测试,该振荡器温度-频率特性和短期频率稳定度分别达到<±2E ^-10(-30~+70 ℃)和<1E ^-12/s的指标,均比同类产品提高1个量级以上,同时其老化率指标可达<5E ^-11/日。

关键词: 高稳定度, SC切谐振器, 双层控温, 频率温度特性, 低老化率, 短期频率稳定度

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

中图分类号:

TN753.9

牛占鲁,苏章站,陈萍萍. 高稳双层恒温晶振的设计[J]. 电子科技, 2019, 32(7): 33-37.

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

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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 ℃

高稳双层恒温晶振的设计

Deign of High-Stability DOCXO

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