| 大动态范围AGC电路在接收机中的应用 |
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| 引用本文： | 马战刚,张宇平,孙弋,吴景峰.大动态范围AGC电路在接收机中的应用[J].半导体技术,2010,35(2):191-193. |
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| 作者姓名： | 马战刚 张宇平 孙弋 吴景峰 |
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| 作者单位： | 西安科技大学,通信与信息工程学院,西安,710054;中国电子科技集团公司,第十三研究所,石家庄,050051 |
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| 摘 要： | 自动增益控制电路(AGC)是接收机的重要控制电路之一。具体分析了自动增益控制电路的工作原理以及AGC的分类方式。利用可变增益放大器AD8367和其他模拟电路以及外部检波方式,设计了思维简洁、电路控制速度快的峰值型AGC电路。详细解释了芯片版图、增益控制与电压关系以及基于AD8367的闭环AGC电路系统。实验结果表明,基于AD8367的两级AGC控制电路频率达到70 MHz,动态范围80 dB等预期指标,可以方便地调整所需要的输出电平值,确保接收机正常工作。
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| 关 键 词： | 接收机 自动增益控制 峰值型自动增益控制 数字式自动增益控制 |
Large Dynamic Range AGC Circuit Applied in Receiver |
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| Ma Zhangang,Zhang Yuping,Sun Yi,Wu Jingfeng.Large Dynamic Range AGC Circuit Applied in Receiver[J].Semiconductor Technology,2010,35(2):191-193. |
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| Authors: | Ma Zhangang Zhang Yuping Sun Yi Wu Jingfeng |
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| Institution: | 1.Communication and Information College;Xi'an University of Science and Technology;Xi'an 710054;China;2.The 13th Research Institute;CETC;Shijiazhuang 050051;China |
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| Abstract: | Auto gain control(AGC)circuit is one of the important control circuits of receivers.The working principle and the classification of AGC were analyzed.Synchronously peak AGC of simple ideas and high speed of control was designed with variable-gain amplifier AD8367 and other analog circuit.The chip layout,gain control and voltage relationship,as well as closed-loop AGC system based on the AD8367 were explained.The experimental results show that the AD8367-based two stages AGC reached a frequency of 70 MHz,dyn... |
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| Keywords: | receiver auto gain control (AGC) peak AGC digital AGC |
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