Highly Efficient and Linear Class-E CMOS Digital Power Amplifier Using a Compensated Marchand Balun and Circuit-Level Linearization Achieving 67% Peak DE and -40dBc ACLR without DPD

Mohsen Hashemi, Lei Zhou, Yiyu Shen, Mohammadreza Mehrpoo, Leo de Vreede

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

4 Citations (Scopus)

Abstract

A highly efficient and linear wideband digital polar CMOS class-E power amplifier (DPA) is presented. Using a compensated wideband Marchand balun with re-entrant coupled lines for the output matching network, more than 50% peak drain efficiency over 2.2-3GHz with 16-17dBm Pout are achieved. The linearity is significantly improved by nonlinearly sizing the DPA array along with overdrive-voltage control and concurrent multiphase RF clocking. The chip prototype is fabricated in 40nm bulk CMOS and the balun is fabricated on a two-layer PCB. Measured results show -40dBc for a 40MHz QAM signal at 2.6GHz without using any sort of DPD. The measured peak Pout, DE and PAE at 2.6GHz are 17.2dBm, 67% and 45% with VDD=0.7V.
Original languageEnglish
Title of host publication2017 IEEE MTT-S International Microwave Symposium (IMS)
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages2025 – 2028
Number of pages4
ISBN (Electronic)978-1-5090-6360-4
DOIs
Publication statusPublished - 2017
EventIEEE MTT-S International Microwave Symposium, IMS 2017: Connecting Minds. Exchanging Ideas - Hawaii Convention Center, Honolulu, HI, United States
Duration: 4 Jun 20179 Jun 2017
https://ims2017.org/

Conference

ConferenceIEEE MTT-S International Microwave Symposium, IMS 2017
Abbreviated titleIMS 2017
Country/TerritoryUnited States
CityHonolulu, HI
Period4/06/179/06/17
Internet address

Keywords

  • Class-E
  • CMOS
  • digital PA
  • DPD-less
  • efficient
  • linear
  • wideband

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