Noninvasive measurement of electrostatic discharge (ESD) induced phenomena in electronic systems

The design of a high speed measurement system consisting of an electric (E) field detector and a magnetic (H) field detector coupled to an optoelectronic transmission system is described. A laser diode transmitter, a fiber optic link, and a laser diode receiver, were used to isolate the detected signal from a high speed transient digitizer, which was utilized to acquire experimental data for signal processing. Experiments were conducted to measure E and H field induced signals within a typical electronic enclosure, subjected to radiated interference from a spark gap source. Parameters studied included the discharge type, enclosure characteristics, and the test geometry. The results have application in the development of an integrated EMI detector for use in electronic systems