HEMT MMIC-circuits for millimetre-wave telecommunications systems

Future telecommunications systems (e.g. PCS) will use GaAs- and InP-based integrated circuits operating at mm-wave frequencies. The most important figures of merit as cut-off frequency and maximum oscillation frequency of the 3 GaAs and InP-based HEMT MMIC-technologies developed at IMEC, are discussed and compared in this paper. Different design examples of high-frequency integrated circuits are presented showing the high potential of HEMT MMICs.