Title :
A 2.4GHz mixed-signal polar power amplifier with low-power integrated filtering in 65nm CMOS
Author :
Chowdhury, Debopriyo ; Ye, Lu ; Alon, Elad ; Niknejad, Ali M.
Author_Institution :
Berkeley Wireless Res. Center, Univ. of California at Berkeley, Berkeley, CA, USA
Abstract :
A 65nm digitally-modulated polar transmitter incorporates a fully-integrated 2.4GHz efficient switching Inverse Class D power amplifier. Low power digital filtering on the amplitude path helps remove spectral images for coexistence. The transmitter integrates the complete LO distribution network and digital drivers. Operating from a 1-V supply, the PA has 21.8dBm peak output power with 44% efficiency. Simple static predistortion helps the transmitter meet EVM and mask requirements of 802.11g 54Mbps WLAN standard with 18% average efficiency.
Keywords :
CMOS integrated circuits; digital filters; low-power electronics; microwave integrated circuits; power amplifiers; 802.11g WLAN standard; CMOS; LO distribution network; bit rate 54 Mbit/s; digital drivers; digitally-modulated polar transmitter; efficiency 18 percent; frequency 2.4 GHz; inverse class D power amplifier; low power digital filtering; low-power integrated filtering; mixed-signal polar power amplifier; size 65 nm; static predistortion; voltage 1 V; CMOS integrated circuits; Driver circuits; Finite impulse response filter; Power amplifiers; Power generation; Transmitters; Wireless LAN;
Conference_Titel :
Custom Integrated Circuits Conference (CICC), 2010 IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-5758-8
DOI :
10.1109/CICC.2010.5617400
