A fully-integrated 1.8-V, 2.8-W, 1.9-GHz, CMOS power amplifier

This paper demonstrated the first 2-stage, 2.8 W, 1.8 V, 1.9 GHz fully-integrated distributed active transformer (DAT) power amplifier with 50 /spl Omega/ input and output matching using 0.18 /spl mu/m CMOS transistors. It has a small-signal gain of 27 dB. The amplifier provides 2.8 W of power into a 50 /spl Omega/ load with a PAE of 50%.