Title :
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
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;
Conference_Titel :
Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th
Conference_Location :
Recife
Print_ISBN :
0-7803-9033-4
DOI :
10.1109/PESC.2005.1582030
