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Designing high-efficiency class-E LDMOS power amplifier

He Songbai, Wang Huadong, Fei You, Liao Ji-chang, Liu Meirui

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Abstract

Multifunctional RF front ends need to transmit different types of signals while maintaining efficiency and signal quality. we show that switched mode class-E power amplifiers can achieve high efficiency at RF frequency. In this paper, a 20W class-E power amplifier has been designed using MRF21030. The input match network and output network has been simulated carefully and the output efficiency of power amplifier is 63%. Further more, the effect of Vddand input power have also been analyzed.

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What this paper is about

Multifunctional RF front ends need to transmit different types of signals while maintaining efficiency and signal quality. we show that switched mode class-E power amplifiers can achieve high efficiency at RF frequency. In this paper, a 20W class-E power amplifier has been designed using MRF21030. The input match network and output network has been simulated carefully and the output efficiency of power amplifier is 63%. Further more, the effect of Vddand input power have also been analyzed.

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Available abstract

Multifunctional RF front ends need to transmit different types of signals while maintaining efficiency and signal quality. we show that switched mode class-E power amplifiers can achieve high efficiency at RF frequency. In this paper, a 20W class-E power amplifier has been designed using MRF21030. The input match network and output network has been simulated carefully and the output efficiency of power amplifier is 63%. Further more, the effect of Vddand input power have also been analyzed.

Key concepts: Amplifier, LDMOS, RF power amplifier, Power-added efficiency, Electronic engineering, Computer science, Power (physics), Linear amplifier

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