A 2.4-GHz, 2.2-W, 2-V fully-integrated CMOS circular-geometry active-transformer power amplifier. - Ichiro Aoki; Scott D. Kee; David B. Rutledge; Ali Hajimiri (CICC, 2001)

Fully integrated CMOS power amplifier design using the distributed active-transformer architecture. - Ichiro Aoki; Scott D. Kee; David B. Rutledge; Ali Hajimiri (IEEE J. Solid State Circuits, 2002)

A Fully-Integrated Quad-Band GSM/GPRS CMOS Power Amplifier. - Ichiro Aoki; Scott D. Kee; Rahul Magoon; Roberto Aparicio; Florian Bohn; Jeff Zachan; Geoff Hatcher; Donald McClymont; Ali Hajimiri (IEEE J. Solid State Circuits, 2008)