低压PLC信号自动增益放大接收电路设计

Design of Automatic Gain Contro1 Sink Circuit Based on Lower Voltage Power Line Communication

文中在分析L-PLC系统特点和自动增益AGC控制电路工作原理的基础上,设计了一种具有高信噪比、低失真和宽动态范围的自增益控制电路。着重阐明了该电路的硬件设计,并给出了重要参数的设计公式。

This paper emphases analysis and design a new circuit based On L-PLC and the principle of automatic gain control （AGC） circuit, featuring low distortion, high signal-to-noise ratio and wide dynamic range. The hardware circuit design was illustrated in detail and the formulae of important parameters of the circuit were also given.