| 用于电光测量的电流放大器及其噪声测量方法 |
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| 引用本文： | 谢春山,田小建,孙伟,衣茂斌.用于电光测量的电流放大器及其噪声测量方法[J].吉林大学学报(理学版),1999(4). |
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| 作者姓名： | 谢春山 田小建 孙伟 衣茂斌 |
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| 作者单位： | 吉林大学电子工程系!长春，130023，吉林大学电子工程系!长春，130023，吉林大学电子工程系!长春，130023，吉林大学电子工程系!长春，130023 |
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| 基金项目： | 国家自然科学基金!69876014，博士点基金!97018311 |
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| 摘 要： | 分析在微弱电流信号放大过程中由放大电路自身带来的各类噪声及其在电路输出端所产生的影响．用正弦波发生器法辅以锁相放大器（LIA）实现对放大电路噪声因子NF值的测量，进而判定各类放大器的最佳工作区间．
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| 关 键 词： | 热噪声 噪声电流 噪声因子 电流放大器 |
Current Amplifier Used in Electro-optic Measurement and Its Noise Measurement |
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| Xie Chunshan, Tian Xiaojian, Sun Wei, Yi Maobin.Current Amplifier Used in Electro-optic Measurement and Its Noise Measurement[J].Journal of Jilin University: Sci Ed,1999(4). |
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| Authors: | Xie Chunshan Tian Xiaojian Sun Wei Yi Maobin |
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| Abstract: | This paper analyzes variable kinds of noise come from the amplifying circuit itself in the process of amplifying the small current signal, and their effects on the output part of the circuit. Also we measured the value of noise figure of the amplifying circuit by the method of the generator of sine wave support with a Lock-in Amplifier, by this way we can find out the best work region of different kinds of amplifiers. |
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| Keywords: | thermal noise current noise noise figure current amplifier |
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