Critical items need to be identified for a particular calibration method
The purpose of this article is to introduce the reader to basic elements and concepts in the computation of measurement uncertainty for antenna calibration. Measurement uncertainty is a tool used to account for errors associated with a measurement system. Uncertainty can be used for calibration or for actual EUT measurement for radiated or conducted emissions. By fully understanding the types of errors, one can then work to minimize their impact on the overall measurement process and total uncertainty. There are three main types of error distributions that can be used, normal, rectangular, or u-shaped. Definitions for each of these can be found in the NAMAS NIS 81 document.
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