宇航计测技术 ›› 2018, Vol. 38 ›› Issue (5): 43-47.doi: 10.12060/j.issn.1000-7202.2018.05.07

• 论文 • 上一篇    下一篇

一种小型高频恒温晶体振荡器设计

苏霞1;韩艳菊1;王巨1;罗梦佳1;于姗姗1;郑鸿耀1   

  1. 1、北京无线电计量测试研究所,北京100039
  • 出版日期:2018-10-25 发布日期:2018-10-25
  • 作者简介:苏霞(1990.08-),女,工程师,硕士,主要研究方向:石英晶体振荡器研制技术。

Design of a Small-size High-frequency OCXO

SU Xia1;HAN Yan-ju1;WANG Ju1;LUO Meng-jia1;YU Shan-shan1;ZHENG Hong-yao1   

  1. 1、Beijing Institute of Radio Metrology and Measurement, Beijing 100039, China
  • Online:2018-10-25 Published:2018-10-25

摘要: 恒温晶体振荡器因其频率稳定度高、相位噪声低,在军用电子设备和民用通信领域得到广泛的应用。本文介绍了一种100MHz 小型恒温晶振,该产品外形尺寸为25.4mm×25.4mm×12.7mm,采用SC 切晶体。振荡电路使用改进的Colpitts 电路,控温电路则为双运放直流放大连续控温结构。测试结果表明,产品相位噪声达到-140dBc/Hz@100Hz、-160dBc/Hz@1kHz、-172dBc/Hz@100kHz ;短期稳定度达2.11E-12/1s ;在-40℃~ 70℃的工作温度范围内,频率温度稳定性达到±3.0E-8。

关键词: 恒温晶振, 小型化, 高频, 相位噪声, 短期稳定度, 频率温度稳定性

Abstract: Oven-controlled crystal oscillators are widely used in the military electronic equipment and civilian communications because of their great frequency stability and low phase noise. This paper presents a 100MHz small-size OCXO. The size is 25.4mm×25.4mm×12.7mm and a SC cut crystal resonator is used. The oscillating part is a modified Colpitts circuit and the temperature regulator part uses a temperature-controlled circuit with dual operational amplifiers.The experiment results show that the OCXO’s phase noise is -140 dBc/Hz@100Hz、-160dBc/Hz@1kHz and -172dBc/Hz@100kHz; the short-term stability is 2.11E-12/1s and the frequency-temperature stability is ±3.0E-8 at -40℃ ~70℃ .

Key words: OCXO, Small-size, High-frequency, Phase noise, Short-term stability, Frequency-temperature stability