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AssigneeUniversity of South-Eastern Norway
InventorsMehdi AZADMEHR, Yelzhas ZHAKSYLYK
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The invention relates to a switchable multiturn coil antenna for transmitting or receiving wireless power in a wireless power transfer system and a corresponding wireless power transfer system. The coil structure includes a planar multiturn primary conductor coil (5) and at least two secondary conductor coils (1, 2, 3, 4) positioned in the plane defined by the primary coil between the turns of the multiturn primary coil, each of the secondary coils having different sizes and lengths providing different inductance and are shorter than the primary coil, wherein each secondary coils is connected to a respective switch (9,10,11, 12) controlled by a tuning controller (23) for individually connecting and disconnecting the coil to a load or to a power supply. An impedance (8) is be connected between the ends of the primary coil and each of the secondary coils extends one turn around a common coil center.
1-12. (canceled)
A multiturn coil antenna for transmitting or receiving wireless power in a wireless power transfer system, the coil structure comprising a plane multiturn spiral shaped primary conductor coil and at least two secondary conductor coils positioned in the plane defined by the primary coil and interspiraled between the turns of the multiturn primary coil on an insulating material, each of the secondary coils having different diameters and lengths providing different inductance and are shorter than the primary coil, wherein each secondary coils is connected to a switch configured to be controlled by a tuning controller for individually connecting and disconnecting the coil to a battery for receiving said power or to a power supply.
Dependencies are inferred from the claim text.