| Zugriffsnummer | 22993 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Sprache | Englisch |
| Titel | Influence of nonideal calibration items on S-parameter uncertainties applying the SOLR calibration method |
| Autor(in); Institution |
Stumper, Ulrich; PTB-Braunschweig, retired staff
|
| Quelle/Jahr | IEEE Transactions on Instrumentation and Measurement: 58 (2009), 4, 1158 - 1163 |
| ISSN | 0018-9456 |
| DOI | |
| Verlag | New York, NY: IEEE |
| Konferenzangaben | Conference on Precision Electromagnetic Measurements (CPEM), Boulder, Colo., 08-13, June, 2008, USA |
| Freie Schlagworte | measuring uncertainty ; scattering parameter measurement ; sensitivity coefficients ; SOLR calibration ; SOLT calibration ; vector network analyzer |
| Zusammenfassung | For the seven-term, short-open-load-reciprocal (SOLR) calibration method to calibrate a four-sampler vector network analyzer (VNA), the expressions for the deviations of the seven error terms and of the measured S-parameters of two-port test objects from their true values are presented; these deviations are caused by the deviations of the reflections of the calibration elements (shorts, opens, and loads) from their ideal values. For the SOLR calibration, a reciprocal unknown network is used instead of a known through. The influence of a slightly nonreciprocal network on both the error term and the S-parameter deviations is also considered. The obtained sensitivity coefficients are useful for establishing the type-B uncertainty budget for S-parameter measurements. Moreover, the results give valuable information for the design of the calibration elements. |
