@inproceedings{29b567ac6eeb4e869c5718b5c4363e33,
title = "A multilevel pulse-width modulated class-e power amplifier",
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.",
keywords = "Class-e, Dynamic range, Efficiency, Gan, Pulsewidth modulation, Rf power amplifiers, Supply modulation",
author = "Mahdi Javid and Jennifer Kitchen",
note = "Funding Information: The authors want to acknowledge Joseph Staudinger, from NXP Semiconductors for his generous and thoughtful comments and Muhammad Hasin for his assistance with the board design. This work is supported under DARPA contract # D16AP00064.; 2019 IEEE Radio and Wireless Symposium, RWS 2019 ; Conference date: 20-01-2019 Through 23-01-2019",
year = "2019",
month = may,
day = "14",
doi = "10.1109/RWS.2019.8714254",
language = "English (US)",
series = "IEEE Radio and Wireless Symposium, RWS",
publisher = "IEEE Computer Society",
booktitle = "2019 IEEE Radio and Wireless Symposium, RWS 2019",
}