Envelope-tracking-based Doherty power amplifier

M Thian, Peter Gardner

Research output: Contribution to journalArticle

3 Citations (Scopus)


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 languageEnglish
Pages (from-to)525-530
Number of pages6
JournalInternational Journal of Electronics
Issue number5
Publication statusPublished - 1 Jan 2010


  • RF and microwave electronics
  • efficiency enhancement
  • envelope tracking
  • probability density function
  • Doherty power amplifier


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