| 电视系统中预放器的噪声分析 |
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| 引用本文： | 王新春. 电视系统中预放器的噪声分析[J]. 楚雄师范学院学报, 2004, 19(3): 56-58 |
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| 作者姓名： | 王新春 |
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| 作者单位： | 楚雄师范学院物理系,云南,楚雄,675000 |
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| 摘 要： | 预放器是电视系统中决定图象质量最关键单元电路之一，于抓住低噪声电路设计之重点，本文通过等效电路分析与数学推导，方法。而在预放器所有特点中，要求低噪声居首位。为了有利得到预放器信杂比计算式，由此指出提高其信杂比的
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| 关 键 词： | 热噪声 等效电路 噪声功率 信杂比 |
| 文章编号： | 1671-7406(2004)03-0056-03 |
| 修稿时间： | 2004-02-01 |
An analysis of noise of the head amplifier in the television system |
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| WANG Xinchun. An analysis of noise of the head amplifier in the television system[J]. journal of chuxiong normal university, 2004, 19(3): 56-58 |
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| Authors: | WANG Xinchun |
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| Affiliation: | WANG Xinchun |
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| Abstract: | In the television system, the head amplifier, whose low noise being put the first place in all the features, is one of the most important element circuits, which determines the image quality.Based on an analysis of the equivalent circuit and mathematical deduction, the present paper obtains a formula of signal noise ration (SNR) and thus, finds out a technique for (improving) SNR. |
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| Keywords: | thermal noise equivalent circuit noise power signal noise ratio(SNR) |
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