A parametric amplifier for 46 GHz

A degenerate parametric amplifier for 46 GHz is described. It uses a Schottky barrier varactor packaged in a modified Sharpless wafer. The novel amplifier mount construction, which uses no tuning screws, yields predictable and reproducible results. In good agreement with theory, 14-mW pump power was required and a noise temperature of less than 400°K was measured.