2023•The Journal of Korean Institute of Electromagnetic Engineering and ScienceOpen access

Enhancement in Shielding Effectiveness by Electromagnetic Absorbers Applied to Aperture of Metallic Enclosure

Jong Hwa Kwon, Chang Hee Hyoung, Jung-Hwan Hwang, Hyun Ho Park

Abstract

This study introduced a method for enhancing the shielding effectiveness of an enclosure with apertures using an absorber. The absorber was installed on the inner surface of the aperture of the enclosure and attenuated incident electromagnetic waves as they passed through it. Furthermore, the absorber reduced the standing waves generated inside the enclosure owing to the cavity effect, improving shielding effectiveness. A 3D numerical analysis confirmed that the proposed structure enhanced the shielding effectiveness of the enclosure.

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Key concepts: Enclosure, Electromagnetic shielding, Aperture (computer memory), Materials science, Electromagnetic radiation, Optics, Acoustics, Tungsten