EMC of power suppliers for telecommunications by design-a computational approach

This paper proposes a simplified computational method for estimating radiated electromagnetic interference (EMI) from power supply units (PSUs) and then inversely applies it to design problems. Practical considerations are centered on PSUs used in mobile telecommunications systems. By embedding simplified antenna models into generic circuit simulators, radiated EMI levels are estimated, providing a useful predictive tool at an early phase of circuit design. Inversely, when EMI emission bound is given, some important circuit parameters can be determined to achieve EMC. Practical considerations and the validity of this method are also discussed.