Switched-Capacitor RF Power Amplifiers: A Review of Efficiency and Linearity Considerations

Nimrod Ginzberg, Emanuel Cohen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper reviews the recent advancements in the realization of all-digital switched-capacitor power amplifiers (SCPA), and proposes a method for comparison between the different transmitter (Tx) architectures based on circuit level simulations and Matlab signal processing using actual Wi-Fi 802.11ac OFDM signals. The SCPA topologies and I/Q combining approaches are analysed in view of their power-Added efficiency (PAE), linearity and implementation complexity. The analysis method shows that I/Q combining techniques can have comparable PAE performance to polar architectures per error vector magnitude (EVM) levels, while requiring lower phase synchronization bandwidth and implementation effort.

Original languageEnglish
Title of host publication2018 IEEE International Conference on the Science of Electrical Engineering in Israel, ICSEE 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538663783
DOIs
StatePublished - 2 Jul 2018
Externally publishedYes
Event2018 IEEE International Conference on the Science of Electrical Engineering in Israel, ICSEE 2018 - Eilat, Israel
Duration: 12 Dec 201814 Dec 2018

Publication series

Name2018 IEEE International Conference on the Science of Electrical Engineering in Israel, ICSEE 2018

Conference

Conference2018 IEEE International Conference on the Science of Electrical Engineering in Israel, ICSEE 2018
Country/TerritoryIsrael
CityEilat
Period12/12/1814/12/18

Keywords

  • CMOS
  • I/Q combining
  • SCPA
  • high-Z
  • polar transmitter
  • quadrature transmitter
  • shared I/Q
  • switched-capacitor power amplifier

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