Radio frequency identification shelf antenna with a distributed pattern for localized tag detection
US7310070B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2006 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Aug 23, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/26
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In accordance with the teachings described herein, an RFID antenna system is provided for detecting RFID tags on a display structure. The antenna system may include an antenna having an elongated conductor extending from a feeding point to a grounding point in a configuration that defines at least two loops and that has at least two conductor sections crossing each other at an intersection location between two adjacent loops, with a dielectric interposed between the conductor sections at the intersection location. The antenna may be attached to the display structure and may be located at a position on the display structure in relation to a reflective plane that allows the antenna to have a directional longitudinal radiation pattern that radiates into an area of the display structure that is configured to support a displayed item with an attached RFID tag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.