Title :
A 1.85GHz CMOS power amplifier with zero-voltage-switching contour-based outphasing control to improve back-off efficiency
Author :
Sunbo Shim ; Pamarti, Sudhakar
Author_Institution :
Univ. of California, Los Angeles, Los Angeles, CA, USA
Abstract :
A fully-integrated Watt-level output 0.13μm CMOS power amplifier (PA) based on zero-voltage-switching contour control is presented. The technique employs duty-cycle modulation in concert with outphasing to achieve up to 1.5 times improvement in back-off efficiency compared to conventional outphasing PA. The PA meets EVM and ACLR specifications for WCDMA and LTE 10MHz uplink signals with 29% and 21% PAE respectively.
Keywords :
CMOS integrated circuits; UHF power amplifiers; zero voltage switching; LTE; WCDMA; back-off efficiency; duty-cycle modulation; frequency 1.85 GHz; frequency 10 MHz; fully-integrated Watt-level output CMOS power amplifier; size 0.13 mum; uplink signals; zero-voltage-switching contour-based outphasing control; CMOS integrated circuits; Europe; Impedance matching; Multiaccess communication; Radio frequency; Spread spectrum communication; System-on-chip; CMOS PA; class-E; outphasing PA; zero-voltage-switching;
Conference_Titel :
Microwave Symposium (IMS), 2015 IEEE MTT-S International
Conference_Location :
Phoenix, AZ
DOI :
10.1109/MWSYM.2015.7166962
