| 大动态范围AGC系统的构建与仿真 |
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| 引用本文： | 曹晨,苏卫强.大动态范围AGC系统的构建与仿真[J].计算机工程,2009,35(16):234-236. |
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| 作者姓名： | 曹晨 苏卫强 |
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| 作者单位： | 1. 中国科学技术大学计算机系,合肥,230027
2. 江南计算技术研究所,无锡,214083 |
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| 摘 要： | 针对科研实践中需要采集大动态范围模拟信号的问题，构建基于可变增益放大器8369的数字AGC系统。采用基于双斜率滤波技术的设计，给出AGC控制算法的实现流程，利用Matlab仿真引入算例证明算法的可行性，并讨论算法中关键参数取值对控制精度的影响。实际系统达到50dB动态范围的设计目标。
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| 关 键 词： | 自动增益控制 双斜率滤波 可变增益放大器8369 |
Construction and Simulation of Large Dynamic Range AGC System |
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| CAO Chen,SU Wei-qiang.Construction and Simulation of Large Dynamic Range AGC System[J].Computer Engineering,2009,35(16):234-236. |
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| Authors: | CAO Chen SU Wei-qiang |
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| Affiliation: | 1.Department of Computer Science;University of Science and Technology of China;Hefei 230027;2.Jiangnan Institute of Computing Technology;Wuxi 214083 |
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| Abstract: | According to the large dynamic range of signals,this paper proposes a method of design of digital Auto Gain Control(AGC) based on the chip AD8369 and two-slope filtering technique,which is applied in extracting the amplitude of the signal circuit,as well as the algorithms of digital AGC.The validity of algorithms is verified by the simulation in Matlab,and the result of the test,its analysis of errors and improved method is also given. |
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| Keywords: | Auto Gain Control(AGC) two-slope filtering AD8369 |
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