Envelope-tracking-based Doherty power amplifier

Mury Thian; Peter Gardner

doi:10.1080/00207210903486831

Envelope-tracking-based Doherty power amplifier

Mury Thian, Peter Gardner

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

From the instantaneous efficiency plot, it is observed that the conventional 2-stage Doherty power amplifier (DPA) with high upper power dynamic range (>12 dB) suffers from a substantial dip in the middle of the upper power regime, thus reducing the average efficiency. In this study, an envelope-tracking-based DPA is proposed in order to minimise this dip by adjusting the drain bias voltage of the auxiliary amplifier of the DPA proportional to the input power level.

Original language	English
Pages (from-to)	525-530
Number of pages	6
Journal	International Journal of Electronics
Volume	97
Issue number	5
DOIs	https://doi.org/10.1080/00207210903486831
Publication status	Published - May 2010

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1080/00207210903486831

Cite this

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abstract = "From the instantaneous efficiency plot, it is observed that the conventional 2-stage Doherty power amplifier (DPA) with high upper power dynamic range (>12 dB) suffers from a substantial dip in the middle of the upper power regime, thus reducing the average efficiency. In this study, an envelope-tracking-based DPA is proposed in order to minimise this dip by adjusting the drain bias voltage of the auxiliary amplifier of the DPA proportional to the input power level.",

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AB - From the instantaneous efficiency plot, it is observed that the conventional 2-stage Doherty power amplifier (DPA) with high upper power dynamic range (>12 dB) suffers from a substantial dip in the middle of the upper power regime, thus reducing the average efficiency. In this study, an envelope-tracking-based DPA is proposed in order to minimise this dip by adjusting the drain bias voltage of the auxiliary amplifier of the DPA proportional to the input power level.

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JO - International Journal of Electronics

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Envelope-tracking-based Doherty power amplifier

Abstract

ASJC Scopus subject areas

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