A 2.7-GHz multi-level PWM carrier-bursting RF transmitter
(2015) 10th European Microwave Integrated Circuits Conference, EuMIC 2015 p.273-276- Abstract
Carrier-bursting is an attractive RF transmitter concept to achieve high efficiency. The power amplifier (PA) itself either operates at its peak efficiency or is turned off. Another efficiency-enhancing approach is the Doherty concept, where the main PA reaches its peak efficiency already in back-off and the peak PA contributes at high input levels to reach the desired output power. In this work, we attempt to combine the best of both concepts and derive a two-level dual-output pulse width modulator driving two PAs whose outputs are combined. We have evaluated the concept by a real-time FPGA implementation of the modulator for a 2.7GHz carrier driving two Class-AB PAs with a combined peak output power of 30W. The approach exhibits a... (More)
Carrier-bursting is an attractive RF transmitter concept to achieve high efficiency. The power amplifier (PA) itself either operates at its peak efficiency or is turned off. Another efficiency-enhancing approach is the Doherty concept, where the main PA reaches its peak efficiency already in back-off and the peak PA contributes at high input levels to reach the desired output power. In this work, we attempt to combine the best of both concepts and derive a two-level dual-output pulse width modulator driving two PAs whose outputs are combined. We have evaluated the concept by a real-time FPGA implementation of the modulator for a 2.7GHz carrier driving two Class-AB PAs with a combined peak output power of 30W. The approach exhibits a potentially more pronounced back-off efficiency peak compared to the Doherty concept. Furthermore, the overall efficiency scales with the drain efficiency of the PAs and can thus be improved by employing Class-D or Class-F PAs.
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- author
- Singerl, Peter ; Schuberth, Christian ; Mataln, Martin ; Seebacher, David ; Dielacher, Franz and Magesacher, Thomas LU
- organization
- publishing date
- 2015-12-02
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- European Microwave Week 2015: "Freedom Through Microwaves", EuMW 2015 - Conference Proceedings; 2015 10th European Microwave Integrated Circuits Conference Proceedings, EuMIC
- article number
- 7345122
- pages
- 4 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- 10th European Microwave Integrated Circuits Conference, EuMIC 2015
- conference location
- Paris, France
- conference dates
- 2015-09-07 - 2015-09-08
- external identifiers
-
- scopus:84962493119
- ISBN
- 9782874870408
- DOI
- 10.1109/EuMIC.2015.7345122
- language
- English
- LU publication?
- yes
- id
- 43289c20-4eb7-4c24-95ef-e50c15295988
- date added to LUP
- 2016-09-22 10:47:28
- date last changed
- 2022-01-30 06:13:38
@inproceedings{43289c20-4eb7-4c24-95ef-e50c15295988,
abstract = {{<p>Carrier-bursting is an attractive RF transmitter concept to achieve high efficiency. The power amplifier (PA) itself either operates at its peak efficiency or is turned off. Another efficiency-enhancing approach is the Doherty concept, where the main PA reaches its peak efficiency already in back-off and the peak PA contributes at high input levels to reach the desired output power. In this work, we attempt to combine the best of both concepts and derive a two-level dual-output pulse width modulator driving two PAs whose outputs are combined. We have evaluated the concept by a real-time FPGA implementation of the modulator for a 2.7GHz carrier driving two Class-AB PAs with a combined peak output power of 30W. The approach exhibits a potentially more pronounced back-off efficiency peak compared to the Doherty concept. Furthermore, the overall efficiency scales with the drain efficiency of the PAs and can thus be improved by employing Class-D or Class-F PAs.</p>}},
author = {{Singerl, Peter and Schuberth, Christian and Mataln, Martin and Seebacher, David and Dielacher, Franz and Magesacher, Thomas}},
booktitle = {{European Microwave Week 2015: "Freedom Through Microwaves", EuMW 2015 - Conference Proceedings; 2015 10th European Microwave Integrated Circuits Conference Proceedings, EuMIC}},
isbn = {{9782874870408}},
language = {{eng}},
month = {{12}},
pages = {{273--276}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
title = {{A 2.7-GHz multi-level PWM carrier-bursting RF transmitter}},
url = {{http://dx.doi.org/10.1109/EuMIC.2015.7345122}},
doi = {{10.1109/EuMIC.2015.7345122}},
year = {{2015}},
}