Calibrating network analysers more accurately
The procedure is based on a single VNA measurement employing a high precision airline. From this measurement, the error characteristics of the VNA are determined over the entire frequency range using a sophisticated estimation procedure. Virtual experiments were used to optimally tune the parameters of the estimation procedure. The novel calibration procedure has been confirmed by a comparison with an established but involved reference method. The novel calibration procedure now enables high-accurate calibrations of VNAs at low costs, as well as easy performance checks of mechanical calibration kits and electronic calibration units.
Scientific Paper:
http://www.ptb.de/de/aktuelles/archiv/nachrichten/2008/judaschke_arftg2007_proc_neu.pdf
The scientific news on the webpages of the two PTB division which are involved:
http://www.ptb.de/en/aktuelles/archiv/nachrichten/2008/_vna-2.html
http://ib.ptb.de/en/org/8/Nachrichten8/2008/grundlagen/Vektornetzwerk.html
Contact:
Dr. Rolf Judaschke, PTB Working Group 2.22 High-frequency Measuring Techniques,
Phone: +49531-592 2229, e-mail: rolf.judaschke(at)ptb.de
Dr. Gerd Wübbeler, PTB Working Group 8.42 Data Analysis and Measurement Uncertainty
Phone: +4930-3481-7242, e-mail: gerd.wuebbeler(at)ptb.de
Dr. Clemens Elster, PTB Working Group 8.42 Data Analysis and Measurement Uncertainty,
Phone: +4930-3481-7492, e-mail: clemens.elster(at)ptb.de