Single structure multi mode antenna having a single layer structure with coils on opposing sides for wireless power transmission using magnetic field coupling

An antenna, comprising:

• a) a substrate composed of an electrically insulative material having opposing top and bottom surfaces;
• b) a first conductive wire forming a first coil having N1 number of turns, the first coil capable of exhibiting a first inductance disposed on the substrate top surface and a second conductive wire forming a second coil having N2 number of turns, the second coil capable of exhibiting a second inductance disposed within an inner perimeter of the first coil on the substrate top surface, wherein the first and second coils are connected in electrical series;
• c) a third conductive wire forming a third coil having N3 number of turns, the third coil capable of exhibiting a third inductance disposed on the opposing bottom substrate surface;
• d) at least one first via electrically connecting the third conductive wire to at least one of the first and second conductive wires;
• e) a first terminal electrically connected to a first end of the first coil, a second terminal electrically connected to a second end of the second coil and a third terminal electrically connected to either of the first, second, or third coils;
• and
• f) wherein a tunable inductance is generatable by selecting a connection between two of the first, second, and third terminals.