Design of a 350 GHz circular waveguide superconductor-insulator-superconductor mixer for array applications by Tan, B, Wenninger, J, Kittara, P, Noptosporn, P, Jaroenjittichai, P, Singwong, D, Bernete, IG, Chaumont, C, Boussaha, F

“…The mixer is designed to operate from 275–375 GHz, covering a similar frequency range to the HARP-B receiver of the James Clerk Maxwell Telescope. Each antenna probe is connected to a separate but identical mixer circuit comprising three SIS junctions connected in series to reduce the parasitic capacitance, and the relevant tuning circuits and RF chokes. …”