High-Bandwidth, High-Efficiency Envelope Tracking Power Supply for 40W RF Power Amplifier Using Paralleled Bandpass Current Sources

Author

Hoyerby, Mikkel C W ; Andersen, Michael A E

Author_Institution

Tech. Univ. of Denmark, Lyngby

fYear

2005

fDate

16-16 June 2005

Firstpage

2804

Lastpage

2809

Abstract

This paper presents a high-performance power conversion scheme for power supply applications that require very high output voltage slew rates (dV/dt). The concept is to parallel 2 switching bandpass current sources, each optimized for its passband frequency space and the expected load current. The principle is demonstrated with a power supply, designed for supplying a 40 W linear RF power amplifier for efficient amplification of a 16-QAM modulated data stream

Keywords

power amplifiers; power supplies to apparatus; quadrature amplitude modulation; radiofrequency amplifiers; switching convertors; 16-QAM; 40 W; RF power amplifier; high-efficiency envelope tracking power supply; high-performance power conversion scheme; paralleled bandpass current sources; passband frequency space; switching bandpass current sources; Bandwidth; Buck converters; High power amplifiers; Power conversion; Power supplies; Quadrature amplitude modulation; Radio frequency; Radiofrequency amplifiers; Switching converters; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th

Conference_Location

Recife

Print_ISBN

0-7803-9033-4

Type

conf

DOI

10.1109/PESC.2005.1582030

Filename

1582030