Class C-E high-efficiency tuned power amplifier
Class C-E high-efficiency tuned power amplifier
复制标题
C-E类高效调谐功率放大器
DOI：
10.1109/31.17589
复制
发表时间：
1989
期刊：
影响因子：
--
通讯作者：
W. Tabisz
中科院分区：
文献类型：
--
作者：
M. Kazimierczuk;W. Tabisz
本文对C-E类调谐功率放大器进行了数值分析，沿着给出了设计过程和实验结果。放大器的效率和最大工作频率介于C类和E类放大器之间。C类放大器的集电极效率约为70%，而E类放大器的集电极效率约为96%。然而，最佳效率E类放大器的最大工作频率受到晶体管输出电容的限制。在相同的输出功率、直流电源电压和晶体管输出电容下，C类放大器的工作频率可以比最佳效率E类放大器的工作频率高至少16倍。C类、E类和C-E类放大器可以采用相同的电路拓扑结构。操作类别取决于负载网络组件的值。效率和最大工作频率之间的权衡评估所有三类，使用非线性时域仿真。实验结果与理论计算结果吻合较好。>
A numerical analysis of a Class C-E tuned power amplifier is presented, along with a design procedure and experimental results. The efficiency and the maximum operating frequency of the amplifier are intermediate between those of the Class C and E amplifiers. The collector efficiency of the Class C amplifier is about 70%, whereas that of the Class E amplifier is about 96%. The maximum operating frequency of the optimum-efficiency Class E amplifier is, however, limited by the transistor output capacitance. The operating frequency of the Class C amplifier can be at least 16 times higher than that of the optimum-efficiency Class E amplifier at the same output power, DC supply voltage, and transistor output capacitance. The Class C, E, and C-E amplifiers can be obtained with the same circuit topology. The class of operation depends on the values of the load-network components. The tradeoff between the efficiency and the maximum operating frequency is evaluated for all three classes, using nonlinear time-domain simulation. The experimental and theoretical results are in good agreement. >