Digitally-Controlled Polar Transmitter Using a Watt-Class Current-Mode Class-D CMOS Power Amplifier and Guanella Reverse Balun for Handset Applications.
Toshifumi NakataniJeremy RodeDonald F. KimballLawrence E. LarsonPeter M. AsbeckPublished in: IEEE J. Solid State Circuits (2012)