Title :
Reduced Uncertainty of Measurement for Vector Network Analysers Employing Regression During Calibration
Author :
Salter, M.J. ; Ridler, N.M. ; Harris, P.M.
Author_Institution :
Centre for Electromagn. & Time Metrol., National Phys. Lab., Teddington
Abstract :
We formulate the calibration process for a one-port vector network analyser (VNA) as a regression problem making full use of the uncertainty information available for the indicated and ´true´ voltage reflection coefficients (VRCs) of the standards. The benefit of over-determining the calibration in terms or reduced uncertainties is demonstrated for VRC measurements at RF frequencies
Keywords :
calibration; measurement uncertainty; network analysers; measurement uncertainty; vector network analysers; voltage reflection coefficients; Calibration; Covariance matrix; Electromagnetic analysis; Equations; Frequency measurement; Information analysis; Measurement standards; Measurement uncertainty; Testing; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2004 Conference on
Conference_Location :
London
Print_ISBN :
0-7803-8494-6
Electronic_ISBN :
0-7803-8494-6
DOI :
10.1109/CPEM.2004.305483
