Measurement Uncertainty Expression of Capacitive Dividers with Concentrated Parameters in High Frequency Range

Ova disertacija sadrži analizu mogućnosti merenja brzih impulsnih napona i izražavanja odgovarajuće merne nesigurnosti. Dokazano je da je moguće izvršiti numeričku simulaciju odziva mernog sistema na impuls brzine porasta reda veličine pikosekunde. Izražena je merna nesigurnost kapacitivnog razdelnika napona Monte Karlo metodom. Prikazan je način konstruisanja kapacitivnog razdelnika napona sa talasovodnim prilagodnim otporom. Konstruisano je više tipova kapacitivnih razdelnika napona izuzetno dobrih karakteristika. Na osnovu dobijenih rezultata je odabran kapacitivni razdelnik napona najboljih karakteristika i izražena je njegova merna nesigurnostThis thesis contains an analysis of the possibilities for measurement of very fast pulse voltages and proper expression of measurement uncertainty. It has been proven that it is possible to perform numerical simulation to the response of the very fast pulse voltage with rise time at the order of picoseconds of the measuring system. Measurement uncertainty of capacitive voltage dividers is expressed by Monte Carlo method. The way of constructing capacitive voltage dividers with a waveguide resistance is shown in this thesis. The design of four types of capacitive voltage dividers with extremely good features are shown. Based on these results, capacitive voltage divider with best characteristics is selected and its measurement uncertainty is expressed