Network analyzer

Details Network analyzer Network analyzer

1995-12-29

2000-06-27

Ballato, Josie

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Calibration

324638, G01R 2728

Patent

active

060811250

ABSTRACT:
In a network analyzer having one or two test ports each of which is connected via fourports to measuring points the measured values of which are analyzed in an evaluation means that includes a memory for storing system errors which have been determined during a calibration operation and must be taken into account for the object measurement, there is provided a calibration twoport between at least one of said test ports and said fourport of the associated measuring points, said calibration twoport being adapted to be switched from a basic state to two further switching states, and said calibration twoport differs in one of said further switching states from the basic switching state at least in transmission and in the other one of said further switching states differs at least in reflection from the basic switching state.

REFERENCES:
patent: 3319194 (1967-05-01), Adam
patent: 4780661 (1988-10-01), Bolomey
patent: 4982164 (1991-01-01), Schiek et al.
Engen: "The Multistate Two Port: An Alternative Transfer Standard"--ARFTG Digest--Spring 1993.
ATN LP1--Load Pull System--Product Brochure 5091-8311E dated Aug. 1993.
Rabinovich: "An Instrument for Calibrating and Tuning Waveguide Reflectometers"--Telecomms & Radio Engineering--Sep. 73.
IEEE Transactions on Microwave Theory & Techniques, "A Generalized Theory and New Calibration Procedures for Network Analyzer Self-Calibration", H. J. Eul et al., vol. 39, No. 4, Apr. 1991, pp. 724-731.
IEEE Transactions on Instrumentation & Measurement, "Reducing the Number of Calibration Standards for Network Analyzer Calibration", H. J. Eul et al., vol. 40, No. 4, Apr. 1991.

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