Implementation of orthogonal time frequency space modulation for wireless communications
US-12177057-B2 · Dec 24, 2024 · US
Wideband electromagnetic cloaking systems
US9166302B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9166302-B2 |
| Application number | US-73205910-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 25, 2010 |
| Priority date | Aug 25, 2008 |
| Publication date | Oct 20, 2015 |
| Grant date | Oct 20, 2015 |
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Abstract
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Arrangement of resonators in an aperiodic configurations are described, which can be used for electromagnetic cloaking of objects. The overall assembly of resonators, as structures, do not all repeat periodically and at least some of the resonators are spaced such that their phase centers are separated by more than a wavelength. The arrangements can include resonators of several different sizes and/or geometries arranged so that each size or geometry corresponds to a moderate or high “Q” response that resonates within a specific frequency range, and that arrangement within that specific grouping of akin elements is periodic in the overall structure. The relative spacing and arrangement of groupings can be defined by self similarity and origin symmetry. Fractal based scatters are described. Further described are bondary condition layer structures that can activate and deactive cloaking/lensing structures.
First claim
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What is claimed is: 1. A fractal based scatterer comprising: a shell having a cylindrical band shape, the shell being composed of a flexible substrate having a conductive coating with fractal cutouts, wherein the scatterer produces a greater radar cross section for its physical size than would otherwise be produced by its physical size alone. 2. The scatterer of claim 1 , wherein the substrate is polyimide. 3. The scatterer of claim 1 ,…
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- H01Q21/205Primary
Electricity · mapped topic
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- What does patent US9166302B2 cover?
- Arrangement of resonators in an aperiodic configurations are described, which can be used for electromagnetic cloaking of objects. The overall assembly of resonators, as structures, do not all repeat periodically and at least some of the resonators are spaced such that their phase centers are separated by more than a wavelength. The arrangements can include resonators of several different sizes…
- Who is the assignee on this patent?
- Cohen Nathan, Okoro Obinna, Salkind Phillip, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H01Q21/205. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 20 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).