A 2.7-GHz multi-level PWM carrier-bursting RF transmitter

Peter Singerl; Christian Schuberth; Martin Mataln; David Seebacher; Franz Dielacher; Thomas Magesacher

doi:10.1109/EuMIC.2015.7345122

A 2.7-GHz multi-level PWM carrier-bursting RF transmitter

Peter Singerl, Christian Schuberth, Martin Mataln, David Seebacher, Franz Dielacher, Thomas Magesacher

Department of Electrical and Information Technology

Infineon Technologies Austria AG

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

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 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.

Original language	English
Title of host publication	European Microwave Week 2015: "Freedom Through Microwaves", EuMW 2015 - Conference Proceedings; 2015 10th European Microwave Integrated Circuits Conference Proceedings, EuMIC
Publisher	IEEE - Institute of Electrical and Electronics Engineers Inc.
Pages	273-276
Number of pages	4
ISBN (Electronic)	9782874870408
DOIs	https://doi.org/10.1109/EuMIC.2015.7345122
Publication status	Published - 2015 Dec 2
Event	10th European Microwave Integrated Circuits Conference, EuMIC 2015 - Paris, France Duration: 2015 Sept 7 → 2015 Sept 8

Conference

Conference	10th European Microwave Integrated Circuits Conference, EuMIC 2015
Country/Territory	France
City	Paris
Period	2015/09/07 → 2015/09/08

Subject classification (UKÄ)

Electrical Engineering, Electronic Engineering, Information Engineering

Access to Document

10.1109/EuMIC.2015.7345122

Cite this

Singerl, P., Schuberth, C., Mataln, M., Seebacher, D., Dielacher, F., & Magesacher, T. (2015). A 2.7-GHz multi-level PWM carrier-bursting RF transmitter. In European Microwave Week 2015: "Freedom Through Microwaves", EuMW 2015 - Conference Proceedings; 2015 10th European Microwave Integrated Circuits Conference Proceedings, EuMIC (pp. 273-276). Article 7345122 IEEE - Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EuMIC.2015.7345122

Singerl, Peter ; Schuberth, Christian ; Mataln, Martin et al. / A 2.7-GHz multi-level PWM carrier-bursting RF transmitter. European Microwave Week 2015: "Freedom Through Microwaves", EuMW 2015 - Conference Proceedings; 2015 10th European Microwave Integrated Circuits Conference Proceedings, EuMIC. IEEE - Institute of Electrical and Electronics Engineers Inc., 2015. pp. 273-276

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title = "A 2.7-GHz multi-level PWM carrier-bursting RF transmitter",

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 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.",

author = "Peter Singerl and Christian Schuberth and Martin Mataln and David Seebacher and Franz Dielacher and Thomas Magesacher",

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Singerl, P, Schuberth, C, Mataln, M, Seebacher, D, Dielacher, F & Magesacher, T 2015, A 2.7-GHz multi-level PWM carrier-bursting RF transmitter. in European Microwave Week 2015: "Freedom Through Microwaves", EuMW 2015 - Conference Proceedings; 2015 10th European Microwave Integrated Circuits Conference Proceedings, EuMIC., 7345122, IEEE - Institute of Electrical and Electronics Engineers Inc., pp. 273-276, 10th European Microwave Integrated Circuits Conference, EuMIC 2015, Paris, France, 2015/09/07. https://doi.org/10.1109/EuMIC.2015.7345122

A 2.7-GHz multi-level PWM carrier-bursting RF transmitter. / Singerl, Peter; Schuberth, Christian; Mataln, Martin et al.
European Microwave Week 2015: "Freedom Through Microwaves", EuMW 2015 - Conference Proceedings; 2015 10th European Microwave Integrated Circuits Conference Proceedings, EuMIC. IEEE - Institute of Electrical and Electronics Engineers Inc., 2015. p. 273-276 7345122.

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

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AU - Dielacher, Franz

AU - Magesacher, Thomas

PY - 2015/12/2

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N2 - 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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Singerl P, Schuberth C, Mataln M, Seebacher D, Dielacher F, Magesacher T. A 2.7-GHz multi-level PWM carrier-bursting RF transmitter. In European Microwave Week 2015: "Freedom Through Microwaves", EuMW 2015 - Conference Proceedings; 2015 10th European Microwave Integrated Circuits Conference Proceedings, EuMIC. IEEE - Institute of Electrical and Electronics Engineers Inc. 2015. p. 273-276. 7345122 doi: 10.1109/EuMIC.2015.7345122

A 2.7-GHz multi-level PWM carrier-bursting RF transmitter

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