A current-folded up-conversion mixer and VCO with center-tapped inductor in a SiGe-HBT technology for 5-GHz wireless LAN applications. - Günter Grau; Ulrich Langmann; Wolfgang Winkler; Dieter Knoll; Jörg Osten; Klaus Pressel (IEEE J. Solid State Circuits, 2000)

Distributed Collaborative Design of a Mixed-Signal IP Component. - Adam Pawlak; Piotr Penkala; Pawel Fras; Wojciech Sakowski; Günter Grau; Szymon Grzybek; Alexander Stanitzki (DSD, 2009)