| 一种宽温高精度温补晶振的研制 |
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| 引用本文： | 孙敏,黎敏强,陈中平,王占奎.一种宽温高精度温补晶振的研制[J].电子科技,2013,26(8):90-92. |
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| 作者姓名： | 孙敏 黎敏强 陈中平 王占奎 |
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| 作者单位： | (中国电子科技集团公司第13研究所 16专业部,河北 石家庄 050051) |
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| 摘 要： | 介绍了一种新型宽温微机补偿晶体振荡器。文中使用微处理器对专用集成电路芯片设计了温补晶振,分别在高低温区段对输出频率进行分段补偿;增加了噪声处理电路,滤除补偿电压跳变引入的噪声,避免相噪恶化;用二次分段补偿的方法,将补偿温度范围拓展到-55~+105 ℃。试验结果表明,使用该方法研制的10 MHz温补晶振,其频率温度稳定性在-55~+105 ℃范围内,优于±1.0×10-6,相位噪声优于-140 dBc/Hz@1 kHz。
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| 关 键 词： | 频率温度稳定度 微机补偿温补晶振 相位噪声 |
A High Precision Temperature Compensated Crystal Oscillator in Wide Temperature Range |
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| SUN Min
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LI Minqiang
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CHEN Zhongping
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WANG Zhankui.A High Precision Temperature Compensated Crystal Oscillator in Wide Temperature Range[J].Electronic Science and Technology,2013,26(8):90-92. |
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| Authors: | SUN Min LI Minqiang CHEN Zhongping WANG Zhankui |
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| Affiliation: | (Specialized Unit 16,13th Research Institute,CETC,Shijiazhuang 050051,China) |
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| Abstract: | The article introduces a new type microcomputer compensated crystal oscillator (MCXO) for wide temperature.It employs an ASIC VCTCXO.In high temperature region VCTCXO is compensated and likewise in low temperature region.Noise reduction circuit is designed to get a lower phase noise.As a result,frequency temperature stability of 10 MHz TCXO is less than ±1.0×10-6.The measured phase noise is typically better than -140 dBc/Hz at 1 kHz offset frequency from the carrier frequency of 10 MHz. |
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| Keywords: | microcomputer compensated crystal oscillator frequency temperature stability phase noise |
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