254-GHz-to-299-GHz Down Conversion Mixer Using 45nm SOI CMOS

We have realized a CMOS down-conversion mixer with a bandwidth of 254 GHz to 299 GHz using a 45 nm SOI CMOS process. We measured the prototype chip and obtained a conversion gain of −16.5 dB and SSBNF of 26.5 dB at a power consumption of 81.1 mW. If a local oscillator is built in, simulation results show that the conversion gain and SSB NF could be improved to −4.16 dB and 15.3 dB, respectively