不同占空比下带并联滤波器的E类功率放大器分析

2020 IEEE 3rd International Conference on Information Communication and Signal Processing (ICICSP) Pub Date : 2020-09-01 DOI:10.1109/ICICSP50920.2020.9232044

Hua Zaijun, Huang Fengchen, Liu Jianni, Chen Zhao

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引用次数: 1

摘要

E类功率放大器是一类高效率的功率放大器。它被广泛应用于无线通信。本文采用理想模型对不同占空比下带并联滤波器的E类功率放大器进行了分析，并通过仿真对理论分析进行了验证。分析表明，功率放大器的波形和效率随占空比的不同而变化。当占空比远低于50%时，效率会下降很多。设计了一种工作频率为1GHz、输出功率为0.5W的并联滤波器E类功率放大器。对占空比为30%、40%、50%、60%和70%的功率放大器进行了仿真。仿真结果与理论分析吻合较好。采用并联滤波器的E类功率放大器，效率在95%以上，占空比在40% ~ 60%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Analysis of Class E Power Amplifier With Shunt Filter under Different Duty Cycles

Class E power amplifier is a class of power amplifier with high efficiency. It is widely used in wireless communications. In this paper, class E power amplifier with shunt filter under different duty cycles is analysis by ideal models, and the theoretical analysis is validated by simulations. Analysis reveals that the waveform and efficiency for the power amplifier varies with different duty cycles. The efficiency drops down much when the duty cycle is far way from 50%. A Class E power amplifier with shunt filter working at 1GHz with 0.5W output is designed. The power amplifier under duty cycles of 30%, 40%, 50%, 60% and 70% are simulated. Simulation results agree well with the theoretical analysis. The class E power amplifier with shunt filter can keep efficiency above 95% with duty cycles in 40% to 60%.

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2020 IEEE 3rd International Conference on Information Communication and Signal Processing (ICICSP)

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