Title :
A dynamic supply CMOS RF power amplifier for 2.4GHz and 5.2GHz frequency bands
Author :
Fabbro, Paulo Augusto Dal ; Meinen, Cédric ; Kayal, Maher ; Kobayashi, Kazuhiko ; Watanabe, Yuu
Author_Institution :
Electron. Lab., EPFL, Lausanne
Abstract :
An implementation of a dynamic supply RF power amplifier (PA) in 0.11mum CMOS technology occupying a total area of 1.35mm2 is presented. Two-tone measurement results at 2.4 and 5.2GHz show that the system can deliver over 16dBm linear output power with efficiencies of 22.7% and 12.6%, respectively. Compared to constant supply operation, besides providing higher linear output power, the dynamic supply technique allows over 230% relative efficiency enhancement at 2.4GHz and 160% at 5.2GHz at low output power levels. OFDM measurements at 2.4GHz demonstrated that at 3% error vector magnitude (EVM) the absolute improvement in efficiency is over 1.5%
Keywords :
CMOS analogue integrated circuits; microwave power amplifiers; radiofrequency amplifiers; 0.11 micron; 2.4 GHz; 5.2 GHz; CMOS RF power amplifier; CMOS analog integrated circuits; error vector magnitude; linear output power; wireless LAN; CMOS technology; Laboratories; Linearity; OFDM modulation; Power amplifiers; Power generation; Power supplies; Radio frequency; Radiofrequency amplifiers; Wireless LAN;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2006 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9572-7
DOI :
10.1109/RFIC.2006.1651112
