| 光泵磁力仪中压控振荡器的设计与实现 |
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| 引用本文： | 张振宇,程德福,王君,周志坚.光泵磁力仪中压控振荡器的设计与实现[J].仪器仪表学报,2011,32(2). |
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| 作者姓名： | 张振宇 程德福 王君 周志坚 |
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| 作者单位： | 1. 吉林大学地球信息探测仪器教育部重点实验室,长春,130026;吉林大学-美国德州仪器DSP联合实验室,长春,130026
2. 吉林大学地球信息探测仪器教育部重点实验室,长春,130026 |
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| 基金项目： | 国家“863”计划“十一五”重大项目子课题(2006AA06A201)资助项目 |
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| 摘 要： | 压控振荡器是光泵磁力仪的核心器件。为使光泵磁力仪能够对整个地磁场范围进行有效测量,需要一种输出频率范围宽。波段覆盖系数大,并具有较高瞬时稳定度的压控振荡器。采用多个变容二极管并联的方法,设计了基于西勒振荡电路形式,具有放大功能的压控振荡器。实验结果表明,该压控振荡器的输出频率范围大于8~20 MHz,波段覆盖系数达到2.5,输出波形幅度在整个频率范围内均达到3V以上,信号输出稳定,完全满足光泵磁力仪对地磁测量的要求。
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| 关 键 词： | 压控振荡器 光泵磁力仪 变容二极管 波段覆盖系数 |
Design and implementation of the voltage controlled oscillator in optically pumped magnetometer |
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| Zhang Zhenyu,Cheng Defu,Wang Jun,Zhou Zhijian.Design and implementation of the voltage controlled oscillator in optically pumped magnetometer[J].Chinese Journal of Scientific Instrument,2011,32(2). |
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| Authors: | Zhang Zhenyu Cheng Defu Wang Jun Zhou Zhijian |
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| Affiliation: | Zhang Zhenyu1,2,Cheng Defu1,Wang Jun1,Zhou Zhijian1,2(1 Key Laboratory for Geophysical Instrumentation of Ministry of Education,Jilin University,Changchun 130026,China,2 Texas Instrument-Jilin University Joint DSPs Laboratory,China) |
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| Abstract: | VCO is the core device in optically pumped magnetometer.To ensure that optically pumped magnetometer can measure the entire range of the geomagnetic field effectively,a VCO is needed,which should have a wide output frequency range,wide band coverage coefficient and high transient output stability.In this paper a VCO based on the circuit form of Seiler oscillator is designed,which adopts multiple parallel varactors and also has amplification function.Experiment results show that the output frequency range of... |
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| Keywords: | VCO optically pumped magnetometer varactor band coverage coefficient |
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