Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Calibration
Patent
1995-10-04
1997-09-09
Brock, Michael
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Calibration
324638, 36457102, G01R 2706
Patent
active
056660596
ABSTRACT:
In a method for calibrating a network analyzer having two test ports and at least four measuring locations according to the fifteen-term principle, correction values that are taken into consideration in the following subject measurements are calculated by successive measurement of the transmission and reflection parameters at five calibration standards that are successively connected in arbitrary sequence between the two test ports. A one-port network having a known impedance or open circuit is used as a calibration standard for the first calibration measurement. It is being successively connected to the two test ports (MM or OO double one-port network calibration) and four calibration standards are used for the other four calibration methods. Only eleven of the total of sixteen scatter parameters of these four calibration standards are known, whereas the remaining, five unknown scatter parameters are subsequently calculated from the total of measured values.
REFERENCES:
patent: 4982164 (1991-01-01), Schiek et al.
patent: 5313166 (1994-05-01), Eul et al.
patent: 5442296 (1995-08-01), Schiek et al.
Heuermann Holger
Schiek Burkhard
Brock Michael
Rohde & Schwarz GmbH & Co. KG
Rosengerger Hochfrequenztechnik GmbH & Co.
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