论文信息 - A 5.5-GHz multi-mode power amplifier with reconfigurable output matching network

A 5.5-GHz multi-mode power amplifier with reconfigurable output matching network

A 5.5-GHz multi-mode PA with a reconfigurable output matching network which enables near-optimal impedances for size-scaling MOS transistors is proposed. The required load adaption is realized by using two transformers along with stage-bypassing technique for impedance coarse tuning and a switched capacitor for impedance fine tuning. Using a 90-nm CMOS process, the proposed PA demonstrates a PAE enhancement of 2.2×, 3.0×, and 5.0× respectively at 6-dB, 9-dB, and 15-dB transmit power back-off.

[1] Rowan. Gilmore,et al. Practical RF Circuit Design for Modern Wireless Systems: Active Circuits and Systems, Vol. 2 , 2003 .

[2] Kyu Hwan An,et al. A Linear Multi-Mode CMOS Power Amplifier With Discrete Resizing and Concurrent Power Combining Structure , 2011, IEEE Journal of Solid-State Circuits.

[3] Shoji Otaka,et al. A 1.8GHz linear CMOS power amplifier with supply-path switching scheme for WCDMA/LTE applications , 2013, 2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers.

[4] J. Stevenson Kenney,et al. A Triple-Mode Balanced Linear CMOS Power Amplifier Using a Switched-Quadrature Coupler , 2012, IEEE Journal of Solid-State Circuits.

[5] Songcheol Hong,et al. A Dual-Power-Mode Output Matching Network for Digitally Modulated CMOS Power Amplifier , 2013, IEEE Transactions on Microwave Theory and Techniques.

[6] Songcheol Hong,et al. A fully integrated dual-mode CMOS power amplifier for WCDMA applications , 2012, 2012 IEEE International Solid-State Circuits Conference.