Silicon-germanium BiCMOS HBT technology for wireless power amplifier applications. - Jeffrey B. Johnson; Alvin J. Joseph; David C. Sheridan; Ramana M. Maladi; Per-Olof Brandt; Jonas Persson; Jesper Andersson; Are Bjorneklett; Ulrika Persson; Fariborz Abasi; Lars Tilly (IEEE J. Solid State Circuits, 2004)