Calibrating network analysers more accurately
In order to calibrate the network analysers (which is necessary before each measurement is made), mechanical or electronic calibration kits are employed. The Physikalisch-Technische Bundesanstalt (PTB) has now established a method which enables a simple, traced back verification of a conventional network analyser calibration and, moreover, a more accurate secondary calibration.
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
Media Contact
More Information:
http://www.ptb.deAll latest news from the category: Information Technology
Here you can find a summary of innovations in the fields of information and data processing and up-to-date developments on IT equipment and hardware.
This area covers topics such as IT services, IT architectures, IT management and telecommunications.
Newest articles
High-energy-density aqueous battery based on halogen multi-electron transfer
Traditional non-aqueous lithium-ion batteries have a high energy density, but their safety is compromised due to the flammable organic electrolytes they utilize. Aqueous batteries use water as the solvent for…
First-ever combined heart pump and pig kidney transplant
…gives new hope to patient with terminal illness. Surgeons at NYU Langone Health performed the first-ever combined mechanical heart pump and gene-edited pig kidney transplant surgery in a 54-year-old woman…
Biophysics: Testing how well biomarkers work
LMU researchers have developed a method to determine how reliably target proteins can be labeled using super-resolution fluorescence microscopy. Modern microscopy techniques make it possible to examine the inner workings…
