Johns Hopkins University

Douglas B Trigg

Joseph A Miragliotta

Kenneth R Grossman

Adam J Maisano

Steven M Storck

A fastener is configured to maintain electromagnetic interference characteristics of metamaterial shielding. The fastener includes a head having an interior side and an exterior side, a shank extending from the interior side of the head and configured to be driven into a receiving surface, and a seal being formed as a loop and disposed on the interior side of the head. The seal may include a conductive material.

Fastener for use with electromagnetic interference shielding

Electromagnetic shielding systems, apparatuses, and method are provided. One apparatus is an example free-space absorber metamaterial that includes a first array of patches disposed at a first plane, a conductive backplane disposed at a structural surface plane, and a first dielectric spacer disposed between the first array of patches and the conductive backplane. A first bandwidth of absorption for the free-space absorber metamaterial may be based on the area of a patch in the first array of patches, the first electrical resistance of a patch in the first array of patches, and the first gap distance taken between the first array of patches and the conductive backplane.

Electromagnetic energy shielding systems, apparatuses, and methods

A radio frequency surface wave attenuator structure is provided. The structure may be configured to be operably coupled with a plurality of other radio frequency surface wave attenuator structures to form a metamaterial. The radio frequency surface wave attenuator structure may include a patch disposed in a first plane and defining a patch area and a backplane disposed in a second plane and extending along the second plane to be shared with the other surface wave attenuator structures. The structure may further include a via spring having a number of turns and being comprised of a conductive material. The via spring may electrically couple the patch to the backplane. The structure may further include a dielectric disposed between the patch and the backplane.

Growing community of inventors

Laurel, MD, United States of America

Douglas B Trigg