Envelope tracking power amplifier with pre-distortion linearization for WLAN 802.11g

19 October 2004

conference paper
Published by Institute of Electrical and Electronics Engineers (IEEE)

Vol. 3, 1543-1546 Vol.3
https://doi.org/10.1109/mwsym.2004.1338872

Abstract

This paper presents a power amplifier based on envelope tracking (ET) with application to the WLAN 802.11g system. Baseband pre-distortion is implemented to improve the linearity. A high-efficiency wide-bandwidth envelope amplifier and a GaAs MESFET class AB RFPA are designed and implemented for the system. An overall system drain efficiency of 30% is obtained for an OFDM output power of 20 dBm at 2.4GHz.

Keywords

POWER AMPLIFIERS
WIRELESS LAN
LINEARITY
OFDM
POWER GENERATION
RADIOFREQUENCY AMPLIFIERS
RF SIGNALS
RADIO FREQUENCY
BASEBAND
MESFETS

This publication has 1 reference indexed in Scilit:

High-efficiency power amplifier using dynamic power-supply voltage for CDMA applications
IEEE Transactions on Microwave Theory and Techniques, 1999