Three-Dimensional Metallic Electromagnetic Bandgap Structure for a Selective Shielding at the Microwave Band: Design and Simulation

Nowadays, innovative and disruptive new technologies, e.g., 5G, electric vehicles, and others, have given rise to increasingly challenging environment for electromagnetic interference (EMI) suppression, therefore, to overcome this issue new innovative solutions to provide electromagnetic shielding are needed. This paper aims to investigate, numerically, the design of a three-dimensional metallic electromagnetic bandgap (EBG) structure that employ an inverse woodpile cell in order to perform a highly effective shielding for frequencies up to 10 GHz, as well as to allow communication frequencies, selectively mitigating EMI in the electronic device from the external environment, and vice-versa. Our results have shown that the structure presents strong peaks of reflections in the region where frequency is below the cutoff frequency characterizing the 3-D EBG, furthermore, this structure may provide component-level shielding due to complete bandgap and may be well-tuned for vehicular EMC applications that must meet international standards.