DAM中波广播发射机的A/D转换电路探究

Research on A/D Conversion Circuit of Dam Medium Wave Broadcast Transmitter

中波广播发射机模拟/数字(Analog/Digital,A/D)转换技术主要是通过转换电路将来自模拟输入电路中的音频+直流信号转变为12 bit的数字信号,从而实现信号传播与辐射。通过详细分析中波广播发射机的A/D转换电路工作原理,找出其中存在的问题并提出相应的优化措施,从而为下一阶段数字资产管理(Digital Asset Management,DAM)中波广播发射机信号覆盖范围的提升起到一定的推进作用,保障节目播出的高质量和不间断性。

Medium wave broadcast transmitter A/D conversion technology is mainly through the conversion circuit from the analog input circuit audio+DC signal into 12 bit digital signal,so as to achieve signal transmission and radiation.By analyzing the working principle of A/D conversion circuit of medium-wave broadcast transmitter in detail,the existing problems are found and the corresponding optimization measures are put forward,so as to promote the signal coverage of medium-wave broadcast transmitter in the next stage of Digital Asset Management(DAM).Ensure the high quality and continuity of the program broadcast.