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 language | English (US) |
|---|---|
| Title of host publication | 2019 IEEE Radio and Wireless Symposium, RWS 2019 |
| Publisher | IEEE Computer Society |
| ISBN (Electronic) | 9781538659441 |
| DOIs | |
| State | Published - May 14 2019 |
| Event | 2019 IEEE Radio and Wireless Symposium, RWS 2019 - Orlando, United States Duration: Jan 20 2019 → Jan 23 2019 |
Publication series
| Name | IEEE Radio and Wireless Symposium, RWS |
|---|---|
| ISSN (Print) | 2164-2958 |
| ISSN (Electronic) | 2164-2974 |
Conference
| Conference | 2019 IEEE Radio and Wireless Symposium, RWS 2019 |
|---|---|
| Country | United States |
| City | Orlando |
| Period | 1/20/19 → 1/23/19 |
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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
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 proceeding › Conference contribution
}
TY - GEN
T1 - A multilevel pulse-width modulated class-e power amplifier
AU - Javid, Mahdi
AU - Kitchen, Jennifer
PY - 2019/5/14
Y1 - 2019/5/14
N2 - 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.
AB - 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.
KW - Class-e
KW - Dynamic range
KW - Efficiency
KW - Gan
KW - Pulsewidth modulation
KW - Rf power amplifiers
KW - Supply modulation
UR - http://www.scopus.com/inward/record.url?scp=85068671914&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85068671914&partnerID=8YFLogxK
U2 - 10.1109/RWS.2019.8714254
DO - 10.1109/RWS.2019.8714254
M3 - Conference contribution
T3 - IEEE Radio and Wireless Symposium, RWS
BT - 2019 IEEE Radio and Wireless Symposium, RWS 2019
PB - IEEE Computer Society
ER -