Electromagnetic Emission Scanning at the Surface of ICs

With increasing density of components in modern ICs, their electromagnetic compatibility (EMC) becomes more and more a design factor to consider. A lot of interference problems of electronic systems originate form high electromagnetic emission and low immunity of the used ICs. The so-called surface scan method provides a useful measurement technique to highlight origins of emissions
directly at the surface of IC packages or microchips. It is based on measuring electric- as well as magnetic near fields at the surface of ICs by automatically
moving a probe in 3 axis over the device. This technique enables the visualization of the distribution of E- and Hfields emitting from the surface of the device and thereby helps to identify and analyze emission hotspots.