Patent ID: 8901776

Claim:
A wireless power feeder that wirelessly feeds power from a feeding coil to a receiving coil using a magnetic field resonance phenomenon between the feeding coil and the receiving coil, the feeder comprising: a feeding coil circuit that includes the feeding coil; a power supply circuit that supplies AC power to the feeding coil; and a feeding package including a first substrate and a second substrate disposed on the first substrate for accommodating a coil conductor of the feeding coil, wherein the coil conductor of the feeding coil is wound into a series of loops for the first substrate and into another series of loops for the second substrate, each loop being separated from each other, and the coil conductor in the first substrate and the coil conductor in the second substrate being alternately arranged as viewed in an axial direction of the feeding coil, the feeding package includes a cut portion through which the coil conductor runs from the first substrate to the second substrate disposed on the first substrate, the coil conductor in the cut portion is inclined at 45 degrees or less with respect to the first substrate, and the coil conductor comprises only a seamless single conductor running from the first substrate to the second substrate through the cut portion.