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Combined RF and multilevel PWM switch mode power amplifier
Linköping University, Department of Electrical Engineering, Computer Engineering. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Electrical Engineering, Integrated Circuits and Systems. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Electrical Engineering, Computer Engineering. Linköping University, Faculty of Science & Engineering. (Computer Engineering)
2013 (English)Conference paper (Refereed)
Abstract [en]

This paper presents a novel power amplifier (PA) architecture based on the combination of radio frequency pulse width modulation (RFPWM) and multilevel PWM. The architecture provides better dynamic range at high carrier frequency compared to RFPWM. The benefits of this architecture over multilevel PWM are that it only requires a single PA and no combiner. The average efficiency for an 802.11g baseband signal is better than multilevel PWM. Our results also shows that the proposed technique exhibit a constant dynamic range at carrier frequency of 3, 4 and 5 GHz, in contrast to RFPWM which shows a decrease in dynamic range for increase in carrier frequency.

Place, publisher, year, edition, pages
Vilnius, 2013. 1-4 p.
Keyword [en]
microwave power amplifiers;802.11g baseband signal;PA architecture;RF PWM switch mode power amplifier;carrier frequency;constant dynamic range;frequency 3 GHz;frequency 4 GHz;frequency 5 GHz;multilevel PWM switch mode power amplifier;radiofrequency pulse width modulation;Baseband;Dynamic range;Power amplifiers;Pulse width modulation;Radio frequency;Zero voltage switching;Multilevel PWM;RFPWPM;ZVS contour based power amplifiers;switch mode power amplifiers
National Category
Electrical Engineering, Electronic Engineering, Information Engineering Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:liu:diva-127995ISBN: 978-1-4799-1647-4OAI: oai:DiVA.org:liu-127995DiVA: diva2:928611
Conference
NORCHIP
Available from: 2016-05-16 Created: 2016-05-16 Last updated: 2016-05-23

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Ul Haque, Muhammad FahimJohansson, TedLiu, Dake
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