10kW DAM中波广播发射机射频功率放大器的原理与维护

摘要

DAM中波广播发射机是一种运用数字技术进行调幅的发射机，整机共用了52块射频放大器模块。本文着重闸述射频功率放大器的工作原理和实际电路分析，通过维修实例以及结合自己多年为该设备检修和维护的经验，对这类发射机射频放大器模块运行中的常见故障进行了分析，期望为同行在维修时提供参考。%DAM medium wave radio transmitter is a kind of transmitter by using digital technology for AM. The whole transmitter has 52 RF amplifier modules. This article focuses on the working principle of RF power amplifier and the actual circuit analysis, through examples and m years of experience for repair and maintenance of facilities, the common failures in the operation of this type of transmitter RF amplifier modules are analyzed to provide reference for counterparts during maintenance.