Load pull tuner for waveguide wafer probe

A load pull tuner incorporated in a waveguide-to-wafer-probe adapter comprising:

• a partly slotted waveguide-to-wafer-probe adapter, and
• two mobile reflective tuning probes, a first tuning probe and a second tuning probe, and remote control of the tuning probes,
• wherein
• the partly slotted waveguide-to-wafer-probe adapter comprises:
• a rectangular waveguide transmission line having a top and a bottom broad wall and two narrow side walls and is divided into three sections joined by knee junctions:
• a sloped section between a vertical section and a horizontal section, the vertical section being attached to a wafer-probe head and the horizontal section being attached to a waveguide flange;
• and wherein
• the sloped section includes two slots, centered on the top broad wall along the waveguide, a first slot towards the vertical section and a second slot towards the horizontal section, said slots comprising a portion inside the sloped section and a protrusion inside and traversing the knee junctions;
• and wherein
• two mobile carriages, a first mobile carriage and a second mobile carriage, are saddled on and slide along the sloped section of the waveguide, controlled using stepper motors and appropriate gear;
• and wherein
• the first tuning probe is attached to the first mobile carriage and the second tuning probe is attached to the second mobile carriage;
• and wherein
• the tuning probes are inserted contactless at fixed penetration into the slots, the first tuning probe into the first slot and the second tuning probe into the second slot.