Title :
A Digitally Modulated Polar CMOS PA with 20MHz Signal BW
Author :
Kavousian, Amirpouya ; Su, David K. ; Wooley, Bruce A.
Author_Institution :
Stanford Univ., CA
Abstract :
A polar PA employs an array of 64 constant-envelope amplifiers that are activated digitally using 4times oversampling and interpolation to support 64QAM OFDM signals. Implemented in 0.18mum CMOS, the amplifier operates at 1.6GHz with 20MHz signal BW and achieves 7.2% PAE with -26.8dB EVM while delivering 13.6dBm linear output power.
Keywords :
CMOS integrated circuits; power amplifiers; 0.18 micron; 1.6 GHz; 20 MHz; 64QAM OFDM signals; constant-envelope amplifiers; digitally modulated polar CMOS PA; CMOS technology; Digital modulation; Linearity; OFDM; Power amplifiers; Power generation; Prototypes; RF signals; Radio frequency; Radiofrequency amplifiers;
Conference_Titel :
Solid-State Circuits Conference, 2007. ISSCC 2007. Digest of Technical Papers. IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
1-4244-0853-9
Electronic_ISBN :
0193-6530
DOI :
10.1109/ISSCC.2007.373596
