Patent ID: 11879921
Assignee: nan
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A load pull tuner system comprising:
a coaxial load pull tuner comprising:
a parallel plate transmission airline (slabline) having a longitudinal axis, a cavity parallel to the axis between two conductive sidewalls, a center conductor, a test and an idle port, and
a remotely controlled mobile carriage travelling horizontally along the slabline and holding a reflective tuning probe, which is inserted into the cavity of the slabline at a fixed distance from the center conductor, and
a RF energy-absorbing device, remotely insertable into the cavity of the slabline to an adjustable distance from the center conductor;
wherein
the RF energy-absorbing device is placed at a fixed position along the slabline between the test port and the reflective tuning probe;

and
a calibration method for the coaxial load pull tuner comprising:
connecting the tuner to a pre-calibrated vector network analyzer,
measuring s-parameters of the tuner at a first multitude of penetrations of the RF energy-absorbing device into the cavity of the slabline and at a second multitude of positions of the reflective tuning probe along the slabline, and saving the said s-parameters in a calibration file.