Design of planar electromagnetic interference filter

• Main Author: Liu, Fengru
• Other Authors: See Kye Yak
• Format: Thesis-Master by Coursework
• Language: English
• Published: Nanyang Technological University 2024
• Subjects: Engineering; EMI filter; Circuit analysis; Finite element analysis; Circuit simulation; PCB design
• Online Access: https://hdl.handle.net/10356/181330
• Institution: Nanyang Technological University

In this dissertation, we designed an electromagnetic interference (EMI) filter by combining PCB onboard coils with an E-shaped magnetic core, and experimen tally validated its performance in both low-frequency and high-frequency ranges. The reflection coe cient curves indicated that the proposed filter e↵ectively at tenuates high-frequency noise. Furthermore, we developed a simplified model of the EMI filter and conducted theoretical simulations, confirming its e↵ectiveness. Additionally, experimental comparisons were performed across di↵erent configu rations, and we analyzed the relationship between filter performance and these configurations. The results provided insights into how various design settings influence the filter’s behavior, o↵ering subjective interpretations of the observed phenomena