@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",
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",
note = "2019 IEEE Radio and Wireless Symposium, RWS 2019 ; Conference date: 20-01-2019 Through 23-01-2019",
}