Generation of Gbit/s modulated millimeter wave signals for measurement

A new method for generation of phase and frequency modulated signals with bit rates of over 4 Gbit/s at millimeter wave frequencies is presented. This method was successfully applied for the measurement of a 200 GHz 90 nm CMOS downconverter. Measured eye diagrams for BPSK and constellation diagrams for BPSK and QPSK are shown. The proposed method is applicable for millimeter source modules from 50 GHz up to 500 GHz. To the author´s knowledge, this is the first time that Gbit/s modulation is demonstrated using millimeter source modules.