Analysis and design of class E amplifier with shunt capacitance composed of nonlinear and linear capacitances
Analysis and design of class E amplifier with shunt capacitance composed of nonlinear and linear capacitances
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非线性与线性电容并联电容E类放大器的分析与设计
DOI：
10.1109/tcsi.2004.830695
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
M. Kazimierczuk
中科院分区：
文献类型：
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作者：
T. Suetsugu;M. Kazimierczuk
E类放大器需要精确的并联电容来实现最佳工作状态。大多数E类放大器通常通过将外部电容添加到功率晶体管的输出电容来构建，以获得所需的总并联电容。功率晶体管的输出电容是非线性的，外部电容是线性的。因此，无论是线性并联电容的设计方程，还是非线性并联电容的设计方程，都不能用于大多数设计中，尤其是当两者具有可比性时。本文提出了一种分析和设计过程的E类放大器与并联电容组成的晶体管的非线性输出电容和线性外部电容的占空比D=0.5。由于设计方程没有解析形式，本文提供了一个表格和图表，显示数值分析的结果。E类放大器可以使用这些表和图进行设计。最后给出了一个设计实例来说明设计过程。最后给出了PSpice仿真结果和实验结果，验证了理论分析的正确性。
The Class E amplifier requires exact shunt capacitance to achieve optimum operation. Most Class E amplifiers are usually constructed by adding an external capacitor to the output capacitance of the power transistor in order to obtain the total required shunt capacitance. The output capacitance of the power transistor is nonlinear and the external capacitance is linear. Therefore, neither design equations for linear shunt capacitance nor the design equations for nonlinear shunt capacitance can be used in most designs, especially when the two are comparable. This paper presents an analysis and a design procedure for the Class E amplifier with a shunt capacitance composed of both a transistor nonlinear output capacitance and a linear external capacitance for the duty cycle D=0.5. Because the design equations do not have analytical forms, this paper provides a table and figures, which show results of numerical analysis. The Class E amplifier can be designed using these table and figures. A design example is given to illustrate the design procedure. Simulation results of the example circuit with PSpice and experimental results are presented to verify the theoretical results.