一种电力线载波通信发送功率自适应控制系统的设计  

Design of a Power Line Carrier Communication Transmission Power Adaptive Control System

作　　者：马侠 何巍 王勇 MA Xia;HE Wei;WANG Yong(HiTrend Optoelectronic Technology(Shanghai)Co.,Ltd.,Shanghai 201203,China)

机构地区：[1]钜泉光电科技(上海)股份有限公司,上海201203

出　　处：《集成电路应用》2024年第3期44-47,共4页Application of IC

摘　　要：阐述应用PLC通信中的一种控制输出功率系统电路实现方案。该方案利用一个ALC控制环路来改变发送端的TX VGA增益,从而实现PA的输出功率自适应调整。该电路可以很好地解决时变电力线负载,PA输出功率变化的问题。通过ALC自动环路,在不同输出负载下,PA输出功率基本保持不变。在重载状况下,能改善PA的线性度,整个PA谐波较小,保证系统EMI的性能,提高PLC通信的质量。This paper describes a circuit implementation scheme for controlling output power in PLC communication.This scheme utilizes an ALC control loop to change the TX VGA gain at the transmitter,thereby achieving adaptive adjustment of PA output power.This circuit can effectively solve the problem of time-varying power line loads and changes in PA output power.Through the ALC automatic loop,the PA output power remains basically unchanged under different output loads.Under overload conditions,it can improve the linearity of PA,reduce the overall harmonic of PA,ensure the performance of system EMI,and improve the quality of PLC communication.

关 键 词：通信技术 电力线载波 发送功率 自适应控制系统 

分 类 号：TN913.6[电子电信—通信与信息系统]