| 主权项 |
1. A system for an antenna for near field communications (NFC), said antenna comprising:
a primary loop with a primary current to produce a magnetic field; one or more secondary loops with one or more secondary currents; wherein by adjusting one or more variables associated with said one or more secondary loops, said magnetic field is modified to ensure antenna operation within a defined operating range; and said one or more variables comprising
(1) a number of secondary loops,(2) one or more amplitudes of the one or more secondary currents in the one or more secondary loops,(3) one or more phase differences between the one or more secondary currents in the one or more secondary loops and the primary current in the primary loop,(4) one or more shapes of the one or more secondary loops,(5) one or more dimensions of the one or more secondary loops, and(6) one or more placements of the one or more secondary loops. |
