A 5.9 GHz RFDAC-based outphasing power amplifier in 40-nm CMOS with 49.2% efficiency and 22.2 dBm power

Z. Hu, L.C.N. de Vreede, M.S. Alavi, D.A. Calvillo-Cortes, R.B. Staszewski, S. He

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

25 Citations (Scopus)

Abstract

In this paper, we present a fully integrated RFDAC-based outphasing power amplifier (ROPA) in 40-nm CMOS that achieves 22.2 dBm peak output power with 49.2% drain efficiency at 5.9 GHz. It employs differential quasi-load-insensitive Class-E branch PAs that can dynamically be segmented using a 3-bit digital amplitude control word to improve efficiency at power back-off. At 8 dB back-off, this segmentation technique improves the ROPA drain and system efficiency by 5% and 7%, respectively, when compared to a non-segmented approach.
Original languageEnglish
Title of host publicationProceedings of the 2016 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)
EditorsS. Mehta, L. Lin
Place of PublicationDanvers
PublisherIEEE
Pages206-209
Number of pages4
ISBN (Electronic)978-1-4673-8651-7
ISBN (Print)978-1-4673-8652-4
DOIs
Publication statusPublished - May 2016
EventRFIC 2016: IEEE Radio Frequency Integrated Circuits Symposium - San Francisco, CA, United States
Duration: 22 May 201624 May 2016
https://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=37753

Conference

ConferenceRFIC 2016
Abbreviated titleRFIC
Country/TerritoryUnited States
CitySan Francisco, CA
Period22/05/1624/05/16
Internet address

Keywords

  • CMOS integrated circuits
  • differential amplifiers
  • digital-analogue conversion
  • radiofrequency power amplifiers
  • CMOS
  • RFDAC-based outphasing power amplifier
  • ROPA drain
  • complementary metal oxide semiconductor
  • differential quasiload-insensitive class-E branch PA
  • digital amplitude control word
  • efficiency 49.2 percent
  • frequency 5.9 GHz
  • power back-off
  • radiofrequency digital-to-analog converter
  • segmentation technique
  • size 40 nm
  • word length 3 bit
  • Bandwidth
  • Dynamic range
  • Loading
  • Modulation
  • Power generation
  • Switches
  • CMOS power amplifier
  • Chireix combiner
  • Class-E
  • Outphasing power amplifier
  • RFDAC

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