In Part 1, we discussed electromagnetic interference (EMI) in spacecraft electric propulsion systems (EPS), communications equipment, radar, navigation systems, IFF systems, and wireless-power-transfer designs. Part 2 again addresses how EMI is defined and looks at its effects on PCBs and other digital systems, plus presents one method to reduce EMI.
EMI is essentially a disturbance caused by an electromagnetic field that prevents the proper performance in an electrical/electronic system. EMI can emanate from both natural and man-made sources, for example, the Sun’s or the Earth’s magnetic fields.