Electromagnetic interference reduction in printed circuit boards by using metamaterials: a conduction and radiation impact analysis

I. Gil and R. Fernández-García

Journal of Electromagnetic Waves and Applications, 2014, vol. 28, issue 3, 378-388

Abstract: This work aims to compare the implementation of two metamaterials for reducing electromagnetic interference (EMI) in printed circuit boards. Specifically, complementary split-ring resonators (CSRRs) and electromagnetic bandgaps (EBGs) were etched on the ground plane of a microstrip transmission line. Both techniques were compared as EMI filters, taking into account frequency response, signal integrity, and near- and far-field radiation with regard to a reference (solid ground) board. The results of electromagnetic simulations and experimental tests show similar EMI rejection levels in both cases, but CSRRs have a significantly better signal integrity response whereas EBGs behave as lower electromagnetic radiation elements in the operation frequency band.

Date: 2014
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DOI: 10.1080/09205071.2013.872055

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