A 14-GHz, 22-dBm Series Doherty Power Amplifier in 45-nm CMOS SOI

This paper presents a new series Doherty power amplifier (SDPA) with a single-ended output that eliminates transformers in the output matching network. The series power combining architecture offers higher output power in scaled CMOS compared to conventional Doherty PAs and is amenable to integration at microwave and millimeter wave bands. The SDPA is implemented in 45-nm CMOS SOI and achieves a peak output power of 22-dBm and PAE of 24% and 20% at peak and 6 dB back-off powers, respectively.

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