A CMOS Envelope Tracking Supply Converter for RF Power Amplifiers of 5G NR Mobile Terminals

An envelope tracking supply converter was presented for the RF power amplifiers of sub-6 GHz 5G NR mobile devices. The hybrid supply converter consisted of a linear, fast switching, and slow switching regulators connected in parallel. The two-phase hysteretic control was proposed for use in the fast...

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Bibliographic Details
Published inIEEE transactions on power electronics Vol. 36; no. 6; pp. 6814 - 6823
Main Authors Lin, Yu-Chen, Chen, Yi-Jan Emery
Format Journal Article
LanguageEnglish
Published New York IEEE 01.06.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
5G mobile communication
5G NR
Bandwidth
CMOS
Control systems
Converters
Electronic devices
Energy conversion efficiency
envelope tracking (ET)
mobile communication
Parallel connected
power amplifier (PA)
Power amplifiers
Radio frequency
Regulators
RF transmitter
supply converter
Switches
Switching
Switching circuits
Tracking
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Summary:An envelope tracking supply converter was presented for the RF power amplifiers of sub-6 GHz 5G NR mobile devices. The hybrid supply converter consisted of a linear, fast switching, and slow switching regulators connected in parallel. The two-phase hysteretic control was proposed for use in the fast switching regulator to track the fast-varying envelope of 40-MHz 5G NR signal. The 0.25-μm CMOS supply converter achieved a maximum efficiency of 79.1%. The power-added efficiency improvement of the RF power amplifier with the proposed supply converter was 3.1% when tested with a 40-MHz 256-QAM 5G NR signal.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 14
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2020.3039786