摘要
在简要介绍数字接收机自动增益控制(AGC)工作原理的基础上,分析了数字接收机AGC设计所需考虑的问题及相关因素,提出了数字接收机AGC设计的通用方法,解决了数字接收机AGC过程中,接收机灵敏度降低、瞬时动态减少、噪声系数恶化的矛盾,为数字接收机在复杂的外界电磁信号环境下正常使用提供了保证。结合工程化样机的研制,介绍了各AGC模块的工程化实现方法。理论分析和工程实践均验证了该方案的有效性和实用性。
This paper introduces the theory of digital receiver Automatic Gain Control（AGC）, and analyzes the requisite matters and related factors in designing the digital receiver AGC. A general design of the digital receiver AGC is proposed, which solves the problems like sensitivity reduction, instantaneous dynamic range reduction, noise-figure worse performance, and ensures normal operation of digital receiver in a complicated electro-magnetic environment. The engineering implementation of various AGC modules are introduced. Theoretical analysis and engineering practices validate the effectiveness and practicability of the scheme.
出处
《信息与电子工程》
2009年第3期173-176,共4页
information and electronic engineering
关键词
数字接收机
自动增益控制
工程实现
瞬时动态范围
灵敏度
噪声系数
digital receiver
Automatic Gain Control
engineering implementation
instantaneous dynamic range
sensitivity
noise-figure
