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为了使前馈功放具有自适应能力,设计了一种基于单片机实现的导频前馈功放.分析了导频前馈功放的工作原理,在此基础上阐述了导频自适应调整的过程,并对可调移相器、可调衰减器的位置进行了讨论.最后介绍了单片机和接口芯片的连接和运行过程.该导频前馈功放不仅具有很高的线性度,而且还具有了自适应能力.
In order to make the feedforward amplifier have adaptive capability, a pilot feedforward amplifier based on single-chip microcomputer is designed. The working principle of the pilot feedforward amplifier is analyzed. On this basis, the adaptive pilot adjustment process is described. The position of the adjustable phase shifter and the adjustable attenuator are discussed.Finally, the connection and operation of the singlechip and the interface chip are introduced.The pilot feedforward amplifier not only has high linearity, but also has adaptive ability.