Planar resonator for wireless power transfer

A planar power resonator comprising

• a pair of flat coiled conductors having an air gap in between,
• a first coiled conductor of the pair of coiled conductors being in contact with dielectric, said first coiled conductor including means for coupling to a electric source;
• and
• a second coiled conductor of the pair of coiled conductors being vertically aligned with the first coiled conductor, and electrically insulated from the first coiled conductor,
• the first and second conductors being wound in a common direction,
• said second coiled conductor including means for coupling with a load,
• wherein a capacitance between the pair of coiled conductors permits energy transfer from the first coiled conductor to the second coiled conductor to form a series resonant circuit.

A planar resonator comprising:

• an interface of energy transfer (IOET), said IOET having a top surface and bottom surface;
• a first spiral-shaped conductor arranged on the top surface of said IOET;
• a second spiral-shaped conductor arranged on the bottom surface of said IOET, said second spiral-shaped conductor having a vertical axis aligned with said first spiral-shaped conductor;
• a first substrate material arranged on the top surface of the IOET;
• and
• a second substrate material arranged on the bottom surface of the IOET,
• wherein
• the second spiral-shaped conductor is electrically insulated from the first spiral-shaped conductor and wound in a common direction as the first spiral-shaped conductor, and
• the IOET and the first and second spiral-shaped conductors have a predetermined self-resonant frequency.

A method for providing a planar power resonator for contactless power transfer comprising:

• (a) providing an interface of energy transfer (IOET), said IOET having a top surface and bottom surface;
• (b) arranging a first spiral-shaped conductor on the top surface of said IOET;
• and
• (c) arranging a second spiral-shaped conductor on the bottom surface of said IOET so that said second spiral-shaped conductor has a vertical axis in alignment with said first spiral-shaped conductor, and having a winding direction common with the first spiral-shaped conductor,
• wherein:
• the IOET and the first and second spiral-shaped conductors are selected to have a predetermined self-resonant frequency;
• and
• the first and second spirals are electrically insulated from each other and arranged in a series resonator arrangement.