高效率E类功率放大器在某调频电台发射机中的应用

Application of High Efficiency Class E Power Amplifier to Some FM Transmitter

高效率E类功率放大器是一种新型的开关模式功率放大器,由Sokals发明,Raab作了理论上的分析,但至今还不完善,近年来,工程应用研究是讨论的主要课题。本文根据某调频电台发射机的具体情况,讨论了它的设计方法和理论,并给出了试验结果。实验结果表明,应用了E类放大器之后,发射机的输出功率增加,整机效率提高,电池寿命延长,通信距离增加,效果明显改善,体现了应用高效率E类放大器的优越性。

The Class E power amplifier is a new type of tuned power amplifier, which was invented and described by Sokals and its theoretical analysis was presented by Rabb. In recent years, the engineering application of the class E power amplifier is the main topic of discussion. This paper discusses the theory and design procedure of the class E power amplifier according to the conditions of some FM transmitter, and gives experimental results. The experimental results show that the output power is increased, the efficiency is raised, the communication distance is increased, and the life time of the battery is extended. It reflects the advantages of applying the class E power amplifier.