DAM中波广播发射机模拟输入电路的探讨  

Discussion on analog input circuit of dam medium wave broadcast transmitter

作　　者：杨晓鸣 YANG Xiaoming(Radio and Television Bureau of Xinjiang Uygur Autonomous Region 761 Station,Hami 839000,China)

机构地区：[1]新疆维吾尔自治区广播电视局七六一台,新疆哈密839000

出　　处：《电视技术》2020年第2期1-2,80,共3页Video Engineering

摘　　要：DAM中波广播发射机的音频处理器在对其调制的音频信号进行输出的过程中,在被模拟输入电路进行滤波以及阻抗变换后,可加入为负的直流电压,从而产生“音频+直流”的相关信号。本文对DAM中波广播发射机模拟输入电路进行探讨,同时分析总结了模拟输入电路中容易出现的问题。The audio processor of the DAM medium wave broadcast transmitter can add a negative DC voltage after filtering and impedance conversion by the analog input circuit during the process of outputting its modulated audio signal,thereby generating“audio+DC”related signals.This article discusses the analog input circuit of the DAM medium wave broadcast transmitter,and analyzes and summarizes the problems that are likely to occur in the analog inputcircuit.summarized.

关 键 词：音频+直流 DAM中波发射机 浮动载波 

分 类 号：TN838[电子电信—信息与通信工程]