1. 75-GHz f SiGe-base heterojunction bipolar transistors;Patton;IEEE Electron Device Lett.,1990
2. High frequency Si/SiGe heterojunction bipolar transistors;Kamins;IEDM Tech. Dig.,1989
3. Current gain–early voltage product in SiGe base HBTs with thin a-Si:H emitters;Tang;Proc. Eur. Solid-State Device Res. Conf.,1994
4. SiGe heterojunction bipolar transistors with current gains up to 5000;Schreiber;IEDM Tech. Dig.,1989
5. High speed SiGe-HBT with very low base sheet resistivity;Kasper;IEDM Tech. Dig.,1993