Class E tuned power amplifier with nonsinusoidal output voltage
Class E tuned power amplifier with nonsinusoidal output voltage
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具有非正弦输出电压的 E 类调谐功率放大器
DOI：
10.1109/jssc.1986.1052574
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发表时间：
1986
影响因子：
5.4
通讯作者：
M. Kazimierczuk
中科院分区：
文献类型：
--
作者：
M. Kazimierczuk
分析的放大器的限制情况下，负载网络不包含串联谐振输出电路和输出电压是非正弦的。对于任何开关占空比的最佳操作，作者已经确定了电流和电压波形，集电极电流和集电极-发射极峰值，输出功率，功率输出能力，和负载网络元件值。给出了开关占空比为0.25、0.5和0.75时的输出电压频谱。给出了晶体管功率损耗和集电极效率的近似方程。实验结果与理论计算结果吻合得很好。测得的收集器效率为95%。该电路具有实际应用，例如，用于微型计算机或通信设备的直流电源中的高效率开关模式DC-DC转换器。
An analysis is presented of the amplifier for a limiting case when the load network does not contain a series-resonant output circuit and the output voltage is non-sinusoidal. For optimum operation with any switch-duty ratio, the author has determined the current and voltage waveforms, the collector current and collector-emitter peak values, the output power, the power-output capability, and the load-network component values. The spectrum of the output voltage is given for a switch-duty ratio of 0.25, 0.5, and 0.75. Close-approximation equations are given for transistor power losses and collector efficiency. The experimental and theoretical results are in very good agreement. The measured collector efficiency is 95%. The circuit has practical applications, e.g., in high-efficiency switching-mode DC-to-DC converters used in DC power supplies for microcomputers or communication equipment.