Reinmut K. Hoffmann, born at Hof/Saale, Germany, on July 9, 1942, received the DipL-Ing. degree in electrical engineering from the Technical University in Munich, Germany, in 1967. In October 1967 he joined the Central Communications Laboratories of Siemens AG in Munich, where he was engaged in the development of microwave integrated circuit components and in research in microstrip transmission lines and couplers. Since 1973 he has been head of a development group for MIC-components, -. such as mixers, amplifiers, phase shifters in radar and communication equipment, and for computer-aided design methods for microwave integrated circuits.