Patent ID: 8035255

Claim:
A wireless power transfer system comprising: a source unit with at least one source planar magnetic resonator coupled to a power generator, and arranged such that the dipole moment of the said source planar magnetic resonator is oriented substantially in a plane of the source planar magnetic resonator; at least one device unit with at least one device planar magnetic resonator arranged such that the dipole moment of the said device planar magnetic resonator is oriented substantially in a plane of the device planar magnetic resonator; and an active area around the source unit such that when the said device unit is placed in the active area alternating magnetic fields generated by at least one of the source planar magnetic resonators induce a current in at least one of the said device planar magnetic resonators of the said device unit, wherein the said active area of the power transfer system is at least two times the area enclosed by the perimeter of the said source planar magnetic resonator.