Multiport calibration simplification using the...

Details Multiport calibration simplification using the... Multiport calibration simplification using the...

2006-03-28

2006-03-28

Benson, Walter (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Calibration

C324S076220

Reexamination Certificate

active

07019536

ABSTRACT:
In one embodiment, a method of calibrating a multi-port vector network analyzer (VNA) includes (i) performing two-port calibrations on pairs of ports to determine forward and reverse systematic error terms associated with each pair of ports, wherein the pairs of ports are selected such that each port's systematic error terms (directivity, source match, reflection tracking, and load match) are determined, (ii) generating a switch error correction matrix using data from the two-port calibrations, and (iii) performing unknown thru calibration for at least one pair of ports that was not utilized in step (i), wherein the unknown thru calibration comprises applying the switch error correction matrix to measurement data and determining transmission tracking error terms using the corrected measurement data.

REFERENCES:
patent: 5748000 (1998-05-01), Blackham
patent: 6417674 (2002-07-01), Rowell et al.
patent: 6836743 (2004-12-01), Blackham et al.

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