DOTFIVE is a three-year IP proposal for a very ambitious project focused on advanced RTD activities necessary to move the Silicon/germanium heterojunction bipolar transistor (HBT) into the operating frequency range of 0.5 terahertz (THz) (500 gigahertz GHz) enabling the future development of communication, imaging or radar Integrated Circuits (IC) working at frequencies up to 160 GHz . For a giv ...