Using Near Field Probes in Electronic Circuits

Electric and magnetic near-field probes (NFPs) are very useful and valuable tools for measuring and debugging electronic circuits. They have been used from many years ago by RF engineers and for EMI/EMC debugging. In this paper a short review of near field probes and how useful they are for measuring in electronics is included. We explain what a near field probe is, the difference between magnetic and electric near field probes, and several examples to demonstrate their use in EMI debugging and current/voltage non-invasive measurements.