Patent ID: 7113891

Claim:
A method for calibrating a scattering (S) parameter measurement device comprising a network analyzer having M network ports connected to a switch having N switch ports, each of the network ports being connected to respective sets of the switch ports, wherein N is greater than two, the method comprising: selecting port pairs by assigning one of the switch ports from each of the sets of switch ports to at least one of the port pairs; conducting a full calibration on each of the port pairs to determine calibration arrays for each of the port pairs; selecting a first selected one of the switch ports from one of the port pairs and a second selected one of the switch ports from a different one of the sets of switch ports, the second selected port being one of the switch ports not selected during said selecting port pairs step; determining a switch error having three switch error terms attributable to a reciprocal network introduced by the selection of the second selected port; and de-embedding the switch error from the calibration arrays to construct a complete set of calibration arrays.