Radio frequency antenna for an object interrogation device comprising a radio frequency antenna associated with an electronic circuit
US6894660B2 · kind B2 · utility
19Cited by
8References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 2002 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Jan 15, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/27
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A transmission/reception radio-wave aerial for an interrogation device for electronic labels carried by objects, the transmission/reception radio-wave aerial being tuned to an F0 frequency and each electronic label including a radio-wave aerial tuned to the F0 frequency and being associated with an electronic circuit, wherein the transmission/reception radio-wave aerial is arranged to create a magnetic field which modifies the tuning frequency for the radio-wave aerials for the electronic labels in such a way to retune towards the F0 frequency of the aerial of the interrogation device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.