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Articles by Francisco Javier Ortega-González, Universidad Politécnica de Madrid

High Efficiency Power Amplifier Driving Methods and Circuits: Part II

Francisco Javier Ortega-González, Universidad Politécnica de Madrid
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Part I of this article 1 analyzed the driving circuits and methods for power amplifiers, using a low frequency approximation. This second part deals with the driving problem at high frequencies. Using a simple yet effective (for this purpose) active device model, the influence of the intrinsic feedback capacitance...
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High Efficiency Power Amplifier Driving Methods and Circuits: Part I

Use of a low frequency active device model in the analysis of high efficiency power amplifier methods and circuits
Francisco Javier Ortega-González, Universidad Politécnica de Madrid
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A considerable research effort has been invested to optimize the efficiency of high frequency power amplifiers. The work has been focused on output load network design for high frequency active devices. However, the attention received by the driving waveforms and input circuits has been quite low compared to that...
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