A multilevel pulse-width modulated class-e power amplifier

Mahdi Javid, Jennifer Kitchen

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

Abstract

This work reports a Class-E pulse-width modulated RF power amplifier that uses multilevel discrete supply modulation for base station applications. This work quantifies the efficiency roll-off in multilevel PAs and proposes that pulse-width modulated (PWM) class-E PAs offer the best efficiency roll-off and dynamic range, based on the efficiency profile with power back-off (PBO). The presented technique significantly extends the PBO dynamic range of PWM PAs over prior state-of-the-art solutions. A proof of concept watt-level class-E PA is designed using a GaN HEMT and exhibits more than 65% efficiency at 15dB PBO. This design extends the dynamic range of a PWM class-E PA to more than 6dB for a 50 to 30 percent duty cycle variation, and offers an efficiency roll-off of less than 4% per dB. The proposed circuit demonstrates an increasing average drain efficiency with power back-off when reducing the PA supply voltage.

Original languageEnglish (US)
Title of host publication2019 IEEE Radio and Wireless Symposium, RWS 2019
PublisherIEEE Computer Society
ISBN (Electronic)9781538659441
DOIs
StatePublished - May 14 2019
Event2019 IEEE Radio and Wireless Symposium, RWS 2019 - Orlando, United States
Duration: Jan 20 2019Jan 23 2019

Publication series

NameIEEE Radio and Wireless Symposium, RWS
ISSN (Print)2164-2958
ISSN (Electronic)2164-2974

Conference

Conference2019 IEEE Radio and Wireless Symposium, RWS 2019
CountryUnited States
CityOrlando
Period1/20/191/23/19

Fingerprint

Power amplifiers
efficiency
supply
High electron mobility transistors
Base stations
Modulation
Networks (circuits)
Electric potential

Keywords

  • Class-e
  • Dynamic range
  • Efficiency
  • Gan
  • Pulsewidth modulation
  • Rf power amplifiers
  • Supply modulation

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Communication

Cite this

Javid, M., & Kitchen, J. (2019). A multilevel pulse-width modulated class-e power amplifier. In 2019 IEEE Radio and Wireless Symposium, RWS 2019 [8714254] (IEEE Radio and Wireless Symposium, RWS). IEEE Computer Society. https://doi.org/10.1109/RWS.2019.8714254

A multilevel pulse-width modulated class-e power amplifier. / Javid, Mahdi; Kitchen, Jennifer.

2019 IEEE Radio and Wireless Symposium, RWS 2019. IEEE Computer Society, 2019. 8714254 (IEEE Radio and Wireless Symposium, RWS).

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

Javid, M & Kitchen, J 2019, A multilevel pulse-width modulated class-e power amplifier. in 2019 IEEE Radio and Wireless Symposium, RWS 2019., 8714254, IEEE Radio and Wireless Symposium, RWS, IEEE Computer Society, 2019 IEEE Radio and Wireless Symposium, RWS 2019, Orlando, United States, 1/20/19. https://doi.org/10.1109/RWS.2019.8714254
Javid M, Kitchen J. A multilevel pulse-width modulated class-e power amplifier. In 2019 IEEE Radio and Wireless Symposium, RWS 2019. IEEE Computer Society. 2019. 8714254. (IEEE Radio and Wireless Symposium, RWS). https://doi.org/10.1109/RWS.2019.8714254
Javid, Mahdi ; Kitchen, Jennifer. / A multilevel pulse-width modulated class-e power amplifier. 2019 IEEE Radio and Wireless Symposium, RWS 2019. IEEE Computer Society, 2019. (IEEE Radio and Wireless Symposium, RWS).
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