ABSTRACT
This chapter focuses on the pulse-radiating antenna, driven by a suitable pulse generator. Pulse-radiating antennas use techniques for simulating the nuclear electromagnetic pulse (NEMP) away from the explosion. Pulse-radiating antenna systems have been developed for NEMP simulation. Different designs may be used to optimize the radiated waveform in terms of risetime, peak amplitude, and various other physical parameters. The transmitting antenna resonances manifest in the radiated waveform as abrupt or oscillatory changes in the time domain waveform. The calculation of antenna parameters such as the current distribution, charge distribution, or the input impedance for some realistic pulse-radiating antenna geometry may be rather complicated. Hybrid simulators exhibit properties of both guided wave and radiating simulators. The pulser is a Marx generator with a peaking capacitor circuit situated in and below the facility ground plane. The power supply for the system is of the balanced type with the high voltage unit of the power supply located near the pulser enclosure.
