Calibrating automatic test equipment to account for magnitude and phase offsets
AssigneeTeradyne, Inc.
InventorToshihide Kadota
Life of this patent
Estimating the term…
Abstract
A method of calibrating automatic test equipment (ATE) having transmission paths that transport signals includes obtaining amplitude gains of the signals across the transmission paths, obtaining phase delays of the signals across the transmission paths, obtaining magnitude and phase offsets associated with the signals based on the amplitude gains and the phase delays, and calibrating the ATE using the magnitude and phase offsets.
Claims20
A method of calibrating automatic test equipment (ATE) comprising transmission paths that transport signals, the method comprising:
- obtaining amplitude gains of the signals across the transmission paths;
- obtaining phase delays of the signals across the transmission paths;
- obtaining magnitude and phase offsets associated with the signals based on the amplitude gains and the phase delays;
- and
- calibrating the ATE using the magnitude and phase offsets.
A machine-readable medium that stores executable instructions to calibrate automatic test equipment (ATE) having transmission paths, the instructions to cause one or more machines to:
- obtain amplitude gains of the signals across the transmission paths;
- obtain phase delays of the signals across the transmission paths;
- obtain magnitude and phase offsets associated with the signals based on the amplitude gains and the phase delays;
- and
- calibrate the ATE using the magnitude and phase offsets.
Automatic test equipment (ATE) comprising:
- inphase transmission paths;
- and
- quadrature transmission paths, the inphase transmission paths and the quadrature transmission paths transmitting signals that are 90° out of phase;
- and
- a processing device to
- obtain amplitude gains of signals across the inphase transmission paths and across the quadrature transmission paths;
- obtain phase delays of signals across the inphase transmission paths and across the quadrature transmission paths;
- obtain magnitude and phase offsets associated with the signals based on the amplitude gains and the phase delays;
- and
- calibrate the ATE using the magnitude and phase offsets.
Dependencies are inferred from the claim text.