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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.

Patent No.:

US 10914534 B1

PDFFull Text
Date of Patent:
Feb. 09, 2021

Filed:

Nov. 19, 2018

Directional antennas from fractal plasmonic surfaces

Applicant:

Fractal Antenna Systems, Inc., Bedford, MA (US);

Inventors:

Nathan Cohen, Belmont, MA (US);

Ryan Thistle, Waltham, MA (US);

Philip Salkind, Boston, MA (US);

Assignee:

Fractal Antenna Systems, Inc., Bedford, MA (US);

Attorney:

Cesari and McKenna, LLP

Primary Examiner:

Daniel Kessie

Assistant Examiner:

Brian K Baxter

Int. Cl.
CPC ...
F28F 7/00 (2006.01); G02B 1/00 (2006.01); H02J 50/12 (2016.01); G02B 5/00 (2006.01); H01Q 17/00 (2006.01); F41H 3/00 (2006.01); H02J 50/23 (2016.01); H01Q 19/06 (2006.01); H02J 50/20 (2016.01); H01Q 15/00 (2006.01); H02J 50/40 (2016.01); F42B 30/00 (2006.01);
U.S. Cl.
CPC ...
F28F 7/00 (2013.01); F41H 3/00 (2013.01); G02B 1/002 (2013.01); G02B 5/008 (2013.01); H01Q 15/0086 (2013.01); H01Q 17/008 (2013.01); H01Q 19/062 (2013.01); H02J 50/12 (2016.02); H02J 50/20 (2016.02); H02J 50/23 (2016.02); F28F 2245/06 (2013.01); F42B 30/006 (2013.01); H02J 50/40 (2016.02);
Abstract

Systems according to the present disclosure provide one or more surfaces that function as power radiating surfaces for which at least a portion of the radiating surface includes or is composed of 'fractal cells' placed sufficiently closed close together to one another so that a surface wave causes near replication of current present in one fractal cell in an adjacent fractal cell. The fractal cells may lie on a flat or curved sheet or layer and be composed in layers for wide bandwidth or multibandwidth transmission. The area of a surface and its number of fractals determines the gain relative to a single fractal cell. The boundary edges of the surface may be terminated resistively so as to not degrade the cell performance at the edges. Fractal plasmonic surface cards are described.

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