ANTENNA FOR WIRELESS CHARGING
The present application relates to an antenna for wireless charging, the antenna comprising a coil having a fixed inductance and a fixed area, such that the antenna is operable in a frequency range of 100 kHz to 13.56 MHz.
1 . An antenna for wireless charging, the antenna comprising a coil having a fixed inductance and a fixed area, such that the antenna is operable in a frequency range of 100 kHz to 13.56 MHz.
2 . An antenna according to claim 1 wherein the fixed inductance is around 8 μH.
3 . An antenna according to claim 1 wherein the fixed area is in the range from around 1089 mm 2 to around 1899 mm 2 .
4 . An antenna according to claim 3 wherein the fixed area is around 1450 mm 2 .
5 . An antenna according to claim 1 wherein the coil is generally spiral in shape.
6 . An antenna according to claim 1 wherein the coil is generally rectangular in shape.
7 . A wirelessly rechargeable device comprising an antenna according to claim 1 .
8 . A wirelessly rechargeable device according to claim 7 , further comprising a tuning component for tuning the antenna to a desired resonant frequency.
9 . A wirelessly rechargeable device according to claim 8 wherein the tuning component comprises a variable capacitance.
10 . A wireless charger comprising an antenna according to claim 1 .
11 . A wirelessly charger according to claim 10 , further comprising a tuning component for tuning the antenna to a desired resonant frequency.
12 . A wireless charger according to claim 11 wherein the tuning component comprises a variable capacitance.