250 W HVHBT Doherty With 57% WCDMA Efficiency Linearized to -55 dBc for 2c11 6.5 dB PAR. - Craig Steinbeiser; Thomas Landon; Charles Suckling; James Nelson; Joe Delaney; John Hitt; Larry Witkowski; Gary Burgin; Rached Hajji; Oleh Krutko (IEEE J. Solid State Circuits, 2008)