An Efficient Mixed-Signal 2.4-GHz Polar Power Amplifier in 65-nm CMOS Technology | IEEE Journals & Magazine | IEEE Xplore

An Efficient Mixed-Signal 2.4-GHz Polar Power Amplifier in 65-nm CMOS Technology


Abstract:

A 65-nm digitally modulated polar transmitter incorporates a fully integrated, efficient 2.4-GHz switching Inverse Class-D power amplifier. Low-power digital filtering on...Show More

Abstract:

A 65-nm digitally modulated polar transmitter incorporates a fully integrated, efficient 2.4-GHz 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 21.8-dBm peak output power with 44% efficiency. Simple static predistortion helps the transmitter meet EVM and mask requirements of 802.11g 54-Mb/s WLAN data with 18% average efficiency.
Published in: IEEE Journal of Solid-State Circuits ( Volume: 46, Issue: 8, August 2011)
Page(s): 1796 - 1809
Date of Publication: 20 June 2011

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