How not to rely on moore's law alone: Low-complexity envelope-tracking amplifiers

Gavin T. Watkins*, Konstantinos Mimis

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

7 Citations (Scopus)


Achieving fast wireless access speeds in an already restricted bandwidth (as the frequency spectrum is a finite resource) necessitates highly spectrally efficient communications standards that combine both amplitude-modulation (AM) and phase-modulation (PM). The resulting complex modulation schemes require that the RF power amplifier (PA) be highly linear to preserve the modulation and, hence, the transmitted data (in-band linearity) and simultaneously avoid interfering with users of the rest of the spectrum (out-of-band linearity). Unfortunately, in PA design, linearity and efficiency are contradictory goals; typically, highly linear PAs demonstrate low efficiency and, hence, reduced battery life [1].

Original languageEnglish
Pages (from-to)84-94
Number of pages11
JournalIEEE Microwave Magazine
Issue number4
Early online date7 May 2018
Publication statusPublished - 1 Jun 2018

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