Air coil RF transponder and method of making same
US7307535B2 · kind B2 · utility
0Cited by
10References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2004 |
| Grant date | Dec 11, 2007 |
| Priority date | — |
| Expiry date | Jul 28, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/07781
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An RF air coil transponder includes a rotatable carrier, such as a rigid reel. A coil is wound about the reel and at least one field influencing body for influencing the electric and/or the magnetic field within the coil is supported by the reel. The rigidity of the reel enables the coil to keep its form and guarantees precise distances between windings, especially when a winding machine forms the coil. Adjusting the angular position, shape, composition, size, and/or surface are of the body effects adjustment of the resonant frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.