Enhancing EMI Suppressor Designs through Multilayered Magnetic Cores in Toroidal Inductors
Conference
Ghaleb Al-Duhni, GS, Pial, MMH, Khasgiwala, M et al. (2024). Enhancing EMI Suppressor Designs through Multilayered Magnetic Cores in Toroidal Inductors
. 10.1109/ICECET61485.2024.10698188
Ghaleb Al-Duhni, GS, Pial, MMH, Khasgiwala, M et al. (2024). Enhancing EMI Suppressor Designs through Multilayered Magnetic Cores in Toroidal Inductors
. 10.1109/ICECET61485.2024.10698188
EMI suppressors are passive components typically used to filter high-frequency noise due to their high resistance value. That is usually employed using ferrite material with a higher magnetic loss. This paper introduces a novel approach to fabricating such a device without relying on bulky ferrite materials as the magnetic core. The proposed approach relies on using multilayered materials with high electrical conductivity as the magnetic core. We propose three toroid inductor designs using two customized magnetic materials (A and B) with higher electrical conductivity properties. The first toroid design is based on a single-layer magnetic core, the second on a double-layer magnetic core, and the last on an eight-layer magnetic core. The performance of the single-layered toroid inductor is improved by employing a multi-layered core technique in terms of AC resistance across broadband bandwidth. Notably, the multilayered toroid core exhibits higher resistance across the 5-1175 MHz range as compared to the single-layer design. In addition, Depositing conductive layers like copper onto the multilayered toroids leads to inductors that have multiple resonances. Thus, such an approach allows to control and adjust the operational frequency as needed.
