Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Calibration
Patent
1995-10-04
1997-03-04
Wieder, Kenneth A.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Calibration
324638, 36457101, 36457102, G01R 2728, G01R 3500
Patent
active
056083300
ABSTRACT:
A method calibrates a network analyzer having two test ports and at least four measuring locations by successive measurement of the transmission and reflection parameters at three calibration standards successively connected in arbitrary sequence between the two test ports according to the seven-term principle. A first calibration measurement is implemented at an electrical line whose characteristic impedance is known and whose electrical propagation constant may be unknown and complex. Second and third calibration measurements are then respectively implemented at a two-port that is connected between the test ports and is constructed of concentrated components. The electrical propagation constant of the line and correction values that are taken into consideration in following object measurements are calculated from these measured values.
REFERENCES:
patent: 4982164 (1991-01-01), Schiek et al.
patent: 5097215 (1992-03-01), Eul et al.
patent: 5313166 (1994-05-01), Eul et al.
patent: 5440236 (1995-08-01), Schiek et al.
patent: 5442296 (1995-08-01), Schiek et al.
Heuermann Holger
Schiek Burkhard
Do Diep
Rohde & Schwarz GmbH & Co. KG
Wieder Kenneth A.
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