I. Introduction
With increasing switching frequency and power density of power electronics systems, electromagnetic interference (EMI) filters play an important role to comply with the electromagnetic compatibility (EMC) standards. The fast switching of power electronics systems makes an EMI noise frequency increased. Therefore, a high attenuation performance filter is required. However, the EMI filter introduces additional volume and cost to the power electronics systems. Therefore, it is important to develop a small volume filter with high attenuation performance.