Radio frequency identification transponder having integrated antenna
US6268796A · kind A · utility
Inventors
Key dates
| Filing date | Dec 12, 1997 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Dec 12, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/16225
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A radio frequency identification device (RFID) has an antenna formed on a chip. The chip has backside and a front side coated with conductive traces, which are connected through conductive traces on the sides of two elongate through-hole slots formed on the chip to form an operative coil having the chip as a core. In one embodiment, the antenna chip may be stacked above an integrated circuit. In another embodiment, the integrated circuit may be formed on the antenna chip. The antenna chip may include a high magnetic permeability layer to increase the inductance of the coil, a capacitor to tune the coil to a desired frequency, and a coupling capacitor to power the integrated circuit. As well as the specific application disclosed, an inductance useful in numerous applications can be formed according to the above structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.