3.3-3.6 GHz Phase Exploited Doherty Power Amplifier with Parallel Load Combining Network

Debatrayee Roychowdhury, Jennifer Kitchen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This work presents a wideband extended efficiency range symmetric Doherty power amplifier (DPA) operating from 3.3 to 3.6 GHz. The presented DPA uses parallel combining to increase the bandwidth over a conventional DPA, and phase exploitation to extend the high efficiency back-off point beyond 6dB. A detailed performance analysis with respect to frequency is presented for the phase exploited symmetric DPA with parallel load combining (PE-PDPA). To validate the presented technique, a prototype is designed using GaN HEMT devices, and simulation results demonstrate that the PE-PDPA achieves 60%-77% efficiency at saturation and 43%-54% efficiency at 8 dB back-off over the 3.3-3.6GHz operating band. The PA maintains 10 dB gain and an average of 43 dBm saturated power over the entire frequency range.

Original languageEnglish (US)
Title of host publication2021 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications, PAWR 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages48-51
Number of pages4
ISBN (Electronic)9780738143675
DOIs
StatePublished - Jan 17 2021
Externally publishedYes
Event2021 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications, PAWR 2021 - Virtual, San Diego, United States
Duration: Jan 17 2021Jan 22 2021

Publication series

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

Conference

Conference2021 IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications, PAWR 2021
CountryUnited States
CityVirtual, San Diego
Period1/17/211/22/21

Keywords

  • Doherty power amplifier (DPA)
  • extended efficiency
  • gallium nitride (GaN)
  • load modulation
  • wideband

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Instrumentation

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