Indefinite materials
US7522124B2 · kind B2 · utility
75Cited by
11References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2003 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | Mar 18, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q19/062
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A compensating multi layer material includes two compensating layers adjacent to one another. A multi-layer embodiment of the invention produces subwavelength near-field focusing, but mitigates the thickness and loss limitations of the isotropic “perfect lens”. An antenna substrate comprises an indefinite material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.