| 摘要 |
Antenna device for a smart card comprising a supporting card (3) and a chip (4) comprising two antenna prongs (a, b), said antenna device comprising an active coil (A) wherein each of the two ends (8, 9) is respectively connected to one of the two antenna prongs (a, b) of the chip (4), a first set of coils comprising at least one passive coil (Pla) wherein one end (10) is connected to one of the two antenna prongs (a) of the chip (4) and the other end (11) is left free, and a second set of coils comprising at least one passive coil (Plb) wherein one end is connected to the other of the two antenna coils (b) of the chip (4) and the other end is left free. |
