Methods for establishing the complex measuring capacity of homodyne network analyzers
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United States of America Patent
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Mar 17, 1992
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N/A
app pub date -
Apr 9, 1990
filing date -
Apr 7, 1989
priority date (Note) -
Expired
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Abstract
Methods for establishing the complex measuring capability of homodyne operating network analyzers. Single port as well as two-port measuring devices are treated in which the signal detection takes place by means of a linear mixing process. It is possible to overcome the disadvantage of the homodyne detection process, which does not directly supply information relating to the amplitude and phase of the measurement signal, by measuring arbitrary unknown standards. The required number of different unknown standards depends, among other things, on the complexity of the measuring device used. One of the proposed methods operates without any standards at all. After weighting factors have been determined, complex measuring values can be ascertained and one can then proceed as in the case of a heterodyne network analyzer, i.e. with system error calibration measurements and finally with DUT (device under test) measurements.
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