A Low Noise 200GHz band SIS Mixer for Atmospheric Research

摘要

A 200GHz band SIS mixer using PCTJ (Parallel-Connected Twin Junctions) was fabricated for observations of stratospheric minor constituents such as ozooe and chlorine monoxide. A waveguide-type mixer mount with half-reduced height waveguide and fixed back short was used. The junction area is 1.6×1.6μm~ 2. The receiver noise temperature (DSB) of about 150K was achieved at 204GHz.