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

作者：Chowdhury Debopriyo^*; Ye Lu; Alon Elad; Niknejad Ali M

来源：IEEE Journal of Solid-State Circuits, 2011, 46(8): 1796-1809.

DOI：10.1109/JSSC.2011.2155790

• Digital filters
• mixed analog-digital integrated circuits
• OFDM
• power amplifiers
• predistortion
• switching circuits
• transformers

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.

• 出版日期2011-8