During the last years, the Fraunhofer IAF developed a variety of state-of-the-art millimeter-wave monolithic integrated circuits (MMICs) and modules for application in active and passive high-resolution imaging systems operating beyond 200 GHz as well as mixed-signal monolithic ICs intended for use in 100 Gbit/s optical communication systems (Ethernet). The MMICs are based on an advanced metamorphic high electron mobility transistor (mHEMT) technology in combination with grounded coplanar waveguide (GCPW) circuit topology. The mixed-signal ICs are manufactured using a state-of-the-art InP double heterojunction bipolar transistor (DHBT) technology. Examples of high-performance circuits from both technologies are presented in this paper.Index Terms -GaAs, InGaAs, InP, millimeter-wave monolithic integrated circuit (MMIC), metamorphic high electron mobility transistor (mHEMT), low-noise amplifier (LNA), voltage controlled oscillator (VCO), mixed-signal IC, double heterojunction bipolar transistor (DHBT), distributed amplifier (DA), multiplexer (MUX), demultiplexer (DEMUX), clock and data recovery (CDR) Brought to you by | Monash University Library Authenticated Download Date |