A Fully-Integrated Efficient CMOS Inverse Class-D Power Amplifier for Digital Polar Transmitters

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

来源：IEEE Journal of Solid-State Circuits, 2012, 47(5): 1113-1122.

DOI：10.1109/JSSC.2012.2185555

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

In this work, we have demonstrated a fully-integrated, high-efficiency CMOS inverse Class-D PA. Such efficient switching amplifiers can form the core of mixed-signal polar transmitters. A comprehensive analytical framework has been developed to determine optimum component values to maximize efficiency. Operating from a 1-V supply, the PA achieves a peak efficiency of 44% without any RF process options. This is comparable to that of state-of-the-art CMOS switching PAs despite using a much simpler output matching network.

• 出版日期2012-5