J. Osten

Low Cost, 50 GHz Fmax Si/SiGe Heterojunction Bipolar Transistor Technology with Epi-Free Collector Wells

D. Knoll, B. Tillack, R. Barth, 1998, 28th European Solid-State Device Research Conference.

A current-folded up-conversion mixer and VCO with center-tapped inductor in a SiGe-HBT technology for 5-GHz wireless LAN applications

K. Pressel, D. Knoll, U. Langmann, 2000, IEEE Journal of Solid-State Circuits.