Patent ID: 8928333
Filing Date: 2015-01-06
Classification: G01R

Abstract:
1. A method for calibrating an N-port test fixture for an N-port device under test (DUT), using a network analyzer, the method comprising: measuring calibration errors of the test fixture, using a reduced set of N/2 calibration standards; measuring calibration errors due to the network analyzer only, using analyzer-only calibration standards; measuring calibration errors of a common input port of the test fixture, which is common to output ports of the test fixture; calculating fixture error terms from the measured calibration errors of the test fixture and the measured calibration errors of the network analyzer only; calculating first compounded error terms of a combination of the test fixture and the network analyzer, using the fixture error terms with error terms of a first port of the network analyzer; calculating second compounded error terms of a combination of the test fixture and the network analyzer, using the calibration errors of the common input port with error terms of a second port of the network analyzer; and storing the first and second compounded error terms.