Electronic Science and Technology ›› 2019, Vol. 32 ›› Issue (7): 33-37.doi: 10.16180/j.cnki.issn1007-7820.2019.07.007

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Deign of High-Stability DOCXO

NIU Zhanlu,SU Zhangzhan,CHEN Pingping   

  1. 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)


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