Combined RF and multilevel PWM switch mode power amplifier

Author

Ul Haque, Muhammad Fahim ; Johansson, Torbjorn ; Dake Liu

Author_Institution

Dept. of Electr. Eng., Linkoping Univ., Linkoping, Sweden

fYear

2013

fDate

11-12 Nov. 2013

Firstpage

1

Lastpage

4

Abstract

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.

Keywords

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;

fLanguage

English

Publisher

ieee

Conference_Titel

NORCHIP, 2013

Conference_Location

Vilnius

Type

conf

DOI

10.1109/NORCHIP.2013.6702010

Filename

6702010