A 40-nm CMOS Mixer with 36-GHz IF Bandwidth and 60–148 GHz RF Passband

An innovative mixing unit of the proposed mixer named JIM (Joint-Injection-Mixing) featured wide IF and RF bandwidths is proposed. The JIM mixer is designed to cover RF frequency range of 60 GHz to 148 GHz and IF frequency range of dc to 36 GHz. The LO driving power of JIM mixer is 0 dBm with dc power consumption of 2 mW. The conversion gain (CG) of JIM mixer is from -8 dB to -14 dB. The JIM mixer in this work is implemented for fundamental mixing as down-conversion. By utilizing the proposed balun, the LO-to-RF isolation of JIM mixer achieves at least 40 dB. The process fabricated for JIM mixer is 40nm CMOS. The chip sizes excluding and including pads are 0.144 mm
²
and 0.22 mm
²
, respectively. The proposed JIM mixer features the state-of-the-art mixer in terms of IF with the widest bandwidth.