A Small-sized Fast Rise Time HEMP Simulator

A small-sized fast rise time HEMP simulator is designed. The structure of the small-sized fast rise time HEMP simulator is made of four components, including automatic high voltage source, pusle generator, antenna and match load. The automatic high voltage source produces high direct current voltage for the pulse generator automatically. Through replacing the traditional gas by reflned rapeseed oil in the pulse generator, a moving electrode reduces the inductance of the discharge circuit. Therefore, the rise time of the pulse is more fast, up to 2ns. A microcomputer (MPU) controls the charge procedure and monitors the charge voltage. To measure the electronic fleld a flber optic measurement device is used. An application on measurement of shielding body's pulse electric fleld shielding efiectiveness shows that the simulator is suitable for fleldwork.