Method of operating a single structure multi mode antenna for wireless power transmission using magnetic field coupling

A method of operating an antenna, the method comprising:

• a) providing an antenna, comprising:
• i) forming a first coil with a first conductive wire having N1 number of turns with spaced apart first and second, first coil ends contactable to a substrate surface, wherein the first coil is configured to generate a first inductance and a first resonant frequency, wherein a first gap extends between adjacent turns of the first coil;
• ii) forming a second coil with a second conductive wire having N2 number of turns with spaced apart first and second, second coil ends, configured to generate a second inductance and a second resonant frequency, wherein the first resonant frequency is different than the second resonant frequency, the second coil positioned on the substrate surface and one of within an inner perimeter formed by an innermost turn of the first coil and adjacent the first coil, wherein a second gap extends between adjacent turns of the second coil;
• iii) a third gap separating an outermost tum of the second coil from the innermost tum of the first coil, wherein the third gap is greater than the first and second gaps, and wherein the first end of the second coil meets and joins the second end of the first coil forming a continuous junction therebetween;
• and
• iv) electrically connecting a first terminal to the first end of the first coil, electrically connecting a second terminal to the second end of the second coil and electrically connecting a third terminal to either of the second or third coils;
• b) providing a control circuit electrically connected to the antenna;
• c) electrically connecting two of the first, second, and third terminals to achieve a desired antenna operating frequency so that an electrical signal can be received or transmitted;
• d) wherein the first resonant frequency of the first coil differs from the second resonant frequency of the second coil by at least 100 kHz;
• and
• e) wherein at least one of the first coil and the second coil operates at about 100 kHz to about 500 kHz.