In a system with resistance voltage divider for measuring nanosecond high voltage pulse

its impedance matching between the divider and else elements influences measuring result much.The simulation model was built based on simulation soft FEKO.Analysis results indicate it would cause reflection

oscillating and changing of the voltage divider ratio when the system impedance mismatch

and the structure of a divider is very important in order to get ideal response performance.Four different typical structures of a resistor divider were analyzed.The results show that conical transition structure is better.The cone angle of input transition section influences the response rising time much

while the cone angle of output transition section influences distortion level of the response fall portion.Optimization shows that the best angle of input transition cone is 20°

and bigger cone angle of output transition can be adopt according to measuring demand.A small voltage divider was designed and developed based on the result of simulation.The experiments show that the conclusion of simulation is proper.The divider performance can satisfy actual demand for measuring nanosecond high voltage pulse.