RFID tags having improved read range
US7378973B2 · kind B2 · utility
21Cited by
3References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2006 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Mar 27, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12493
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a system and method for optimizing the performance of 13.56 MHz frequency RFID tags in conjunction with metal substrates. Briefly, a thickness exists for each type of RFID isolator material at which the performance of a 13.56 MHz RFID tag is optimal when used with metal. Varying from this optimal value, in either the positive or negative direction adversely affects read distance. A method of determining this optimal thickness is disclosed, as well as an RFID tag or a substrate being used in conjunction with a material of this thickness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.