| 发明名称 | Radiofrequency transponder device with optimized passive resonant circuit | ||
| 摘要 | The invention relates to a radiofrequency device comprising a passive antenna tuned or intended to be tuned in frequency with at least one transponder, said transponder comprising an integrated circuit chip linked to an antenna interface defining an electromagnetic coupling surface periphery, said passive antenna comprising a main loop formed of turns comprising at least one portion of surface (B) inside the loop, at least one recess of the main loop, oriented from the interior to the exterior of the main loop, said portion of surface (B) being located in said recess so as to effect an electromagnetic coupling with a transponder circuit; the device is distinguished in that it comprises two recesses receiving or intended to receive a transponder each. | ||
| 申请公布号 | US9104954(B2) | 申请公布日期 | 2015.08.11 |
| 申请号 | US201214118120 | 申请日期 | 2012.05.15 |
| 申请人 | GEMALTO SA | 发明人 | Buyukkalender Arek;Lahoui Nizar;Seban Frédérick |
| 分类号 | G06K19/077 | 主分类号 | G06K19/077 |
| 代理机构 | Buchanan Ingersoll & Rooney PC | 代理人 | Buchanan Ingersoll & Rooney PC |
| 主权项 | 1. A radiofrequency device comprising: a passive antenna tuned or being configured to be tuned in frequency with at least one transponder, said transponder comprising an integrated circuit chip linked to an antenna interface defining an electromagnetic coupling surface periphery,said passive antenna comprising:a main loop formed of turns comprising at least one portion of surface inside the loop,at least one recess of the main loop oriented from an interior to an exterior of the main loop, with said portion of surface being located in said recess so as to effect an electromagnetic coupling with a transponder circuit, wherein the device comprises two recesses being configured to receive a transponder each. | ||
| 地址 | Meudon FR | ||