Surrogate-Based Optimization of SMT Inductors

Parasitic electromagnetic (EM) effects within passive components are a critical problem in EMI filter applications, especially when specific filter specifications must be met. In this study, a surrogate model-based optimization methodology is proposed to determine the optimal internal geometry of a surface-mounted (SMT) ferrite bead to maximize the inductance of the device over a wide frequency range from 1 MHz to 1 GHz. Preliminary results show an improvement of the device behavior compared to the original design provided by the manufacturer over the entire frequency range of interest.