Electromagnetic bandgap pattern structure, method of manufacturing the same, and security product using the same
US8289109B2 · kind B2 · utility
1Cited by
3References
17Claims
0Family size
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Key dates
| Filing date | May 20, 2010 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | May 4, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/20381
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An electromagnetic bandgap (EBG) pattern structure includes a nonconductive substrate and a pattern assembly formed on the substrate. The EBG pattern structure also includes regularly arranged closed-loop patterns and open-loop patterns, both of which are made of a conductive material. The EBG pattern structure can be used to manufacture new security products by applying its frequency characteristics to securities or IDs and variously used in security technologies for preventing forgery and alteration because various security codes can be created by adjusting the variables of its EBG pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.