| 摘要: |
| 介绍了数字可变增益放大器(DVCA)AD8369的电路结构及其关键技术指标，并用该芯片为数字中频接收机设计了全数字自动增益控制(DAGC)系统，给出了其控制回路及其实现算法。该DAGC系统具有收敛速度快、工作稳定性好和抗饱和能力强等特点。 |
| 关键词: 可变增益放大器,数字中频接收机,自动增益控制,控制电路,算法 |
| DOI：10.3969/j.issn.1001-893X. |
| Revised:August 20, 2003 |
| 基金项目:国防预研项目(×××××0302) |
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| AD8369 and Its Application in Digital Intermediate Frequency Receivers |
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| Abstract: |
| This paper introduces the key specifications and its architecture of AD8369, and designs a full digital automatic gain control(DAGC) system for digital intermediate frequency receiver, and provides its control circuit and algorithm.The DAGC system has several merits, such as fast convergent rate, good operation stability and anti-saturation,etc. |
| Key words: Variable gain amplifier,Digital IF receiver,automatic gain control,Control circuit,Algorithm |
