The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 10, 2024

Filed:

Aug. 03, 2021
Applicants:

Khalifa University of Science and Technology, Abu Dhabi, AE;

Korea University Research and Business Foundation, Seoul, KR;

Inventors:

Daniel Choi, Abu Dhabi, AE;

Hammad Younes, Abu Dhabi, AE;

Ru Li, Abu Dhabi, AE;

Young Keun Kim, Seoul, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K 9/00 (2006.01); C04B 35/26 (2006.01); C04B 41/50 (2006.01);
U.S. Cl.
CPC ...
H05K 9/0088 (2013.01); C04B 35/26 (2013.01); C04B 41/5001 (2013.01); C04B 2235/3272 (2013.01);
Abstract

A device and method for absorbing electromagnetic waves can include a honeycomb sheet formed by a plurality of interconnected hexagon cells arranged in rows. The hexagon cells are made up of sidewalls, each sidewall formed by two surfaces that converge at a top of the sidewall and diverge from the top to a bottom of the sidewall such that a thickness of the sidewalls increases from top to bottom and an angle forms between the two surfaces at the top of the sidewall. In an example, the angle is about 8 degrees. The honeycomb sheet can be coated with a magnetic, composite coating to increase electromagnetic shielding. An example coating includes magnetic multi-granular nanoclusters (MGNC) and multi-walled carbon nanotubes (MWCNT). A base layer can be attached to the honeycomb sheet for mechanical stability and additional absorption. The device is suitable for radar absorbing materials (RAM) for aerospace and military applications.


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