Comparison of S-band Analog and Dual-Input Digital Doherty Power Amplifiers

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)

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Author(s)

  • Anna Piacibello
  • Marco Pirola
  • Vittorio Camarchia
  • Chira Ramella
  • Roberto Quaglia

Related Research Unit(s)

Detail(s)

Original languageEnglish
Title of host publication2018 13th European Microwave Integrated Circuits Conference (EuMIC 2018)
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages269-272
ISBN (Electronic)9782874870521
ISBN (Print)9781538652862
Publication statusPublished - Sep 2018

Publication series

NameEuropean Microwave Integrated Circuits Conference

Conference

Title13th European Microwave Integrated Circuits Conference, EuMIC 2018 (as part of the European Microwave Week 2018)
PlaceSpain
CityMadrid
Period24 - 25 September 2018

Abstract

This work aims at assessing the performance improvement offered by a dual-input digitally driven Doherty power amplifier (DPA) with respect to the single-input topology. To this aim, an analog DPA is designed and characterized. The equivalent digital version, which only differs by the absence of the input power divider, is also realized and analyzed. This ensures a fair comparison of the two topologies. Power-dependent input signal splitting between the main and auxiliary branches as well as adaptive phase alignment are adopted in the digital version to compensate for the back-off efficiency degradation as well as other shortcomings typically shown by traditional analog DPAs. For the first time, the performance figures of merit of the equivalent analog and digital DPAs are compared one-to-one systematically. The comparison over the 3.1-3.7 GHz range shows a superior efficiency performance of the digital DPA over the analog one, both at saturation and in back-off. Furthermore, the dual-input control also ensures higher gain and saturated output power.

Research Area(s)

  • back-off, digital, Doherty, efficiency enhancement, power amplifier

Bibliographic Note

Full text of this publication does not contain sufficient affiliation information. With consent from the author(s) concerned, the Research Unit(s) information for this record is based on the existing academic department affiliation of the author(s).

Citation Format(s)

Comparison of S-band Analog and Dual-Input Digital Doherty Power Amplifiers. / Piacibello, Anna; Pirola, Marco; Camarchia, Vittorio; Ramella, Chira; Quaglia, Roberto; Zhou, Xinyu; Chan, Wing-Shing.

2018 13th European Microwave Integrated Circuits Conference (EuMIC 2018). Institute of Electrical and Electronics Engineers Inc., 2018. p. 269-272 8539954 (European Microwave Integrated Circuits Conference).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)