A 3.5GHz High Power GaN Hybrid Doherty Power Amplifier with Dynamic Input Power Splitting for Enhanced Power Added Efficiency at Backoff

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Abstract

In this paper, a hybrid Doherty power amplifier (DPA) using dynamic input power splitting for 3.5 GHz is presented and compared to another Doherty with a conventional Wilkinson input divider sharing the same output structure. The amplifier is designed in a novel hybrid configuration, where a MMIC consisting of two parallel GaN transistors with input prematching are fully integrated on chip and used as the main and peak amplifiers. The remaining passive structures are implemented at PCB level on a RO4350B. The results at 3.5 GHz under continuous wave operation show 45 dBm of maximum output power with over 41% of PAE and Drain efficiency over 47% in a 6dB output power backoff (OBO) and 7 dB of gain for maximum output power.
Originalspracheenglisch
Titel2021 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications, PAWR 2021
Herausgeber (Verlag)IEEE Xplore
Seiten44 - 47
Seitenumfang4
ISBN (elektronisch)9780738143675
ISBN (Print)978-1-6654-0408-2, 978-1-6654-0409-9
DOIs
PublikationsstatusVeröffentlicht - 17 Jan 2021
Veranstaltung2021 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR) - San Diego, Calif., Virtuell, USA / Vereinigte Staaten
Dauer: 17 Jan 202120 Jan 2021

Publikationsreihe

Name2021 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications, PAWR 2021

Konferenz

Konferenz2021 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR)
KurztitelPAWR 2021
Land/GebietUSA / Vereinigte Staaten
OrtVirtuell
Zeitraum17/01/2120/01/21

Schlagwörter

  • Doherty Amplifier
  • MMIC
  • GaN HEMT
  • Power divider

ASJC Scopus subject areas

  • Elektrotechnik und Elektronik
  • Instrumentierung
  • Computernetzwerke und -kommunikation

Fields of Expertise

  • Information, Communication & Computing

Treatment code (Nähere Zuordnung)

  • Experimental

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