Automatic calibration of a network analyzer
AssigneeHewlett-Packard Company
InventorJason A. Chodora
Life of this patent
Estimating the term…
Abstract
A radio frequency network analyzer connected to a multi-port test set is calibrated. An initial calibration is performed for each test set port in the multi-port test set. The initial calibration is performed by first performing a measurement calibration using calibration standards. The calibration standards are located in a reference plane located outside the multi-port test set. The measurement calibration yields initial calibration coefficients. Also the initial calibration includes measuring electronic standards within the multi-port test set to produce initial measured electronic standards. The initial calibration coefficients and the measured electronic standards are used to generate initial corrected electronic standards.
Claims10
A method for performing calibration of a network analyzer system, the method comprising the following steps:
- (a) performing an initial calibration for test ports of the network analyzer system comprising the following substeps:
- (a.1) performing a measurement calibration using calibration standards, the calibration standards being located in a reference plane located outside the network analyzer system, the measurement calibration yielding initial calibration coefficients,
- (a.2) measuring electronic standards within the network analyzer system to produce initial measured electronic standards, and
- (a.3) using the initial calibration coefficients and the measured electronic standards to generate initial corrected electronic standards;
- and,
- (b) performing an automatic recalibration for the test ports, the automatic recalibration being performed after initial calibration of all the test ports in step (a), the automatic recalibration being performed without use of calibration standards located in a reference plane located outside the network analyzer system and the automatic recalibration comprising the following substeps:
- (b.1) measuring the electronic standards within the network analyzer system to produce recalibration measured electronic standards, and
- (b.2) using the recalibration measured electronic standards and the initial corrected electronic standards to produce recalculated calibration coefficients.
Dependencies are inferred from the claim text.