Inductor coil structures to influence wireless transmission performance

A structure configured to transmit or receive wireless electrical energy, the structure comprising:

• a substrate;
• an electrically conductive filar on a surface of the substrate with spaced apart first and second filar ends and comprising a filar thickness oriented about perpendicular to the surface of the substrate, the electrically conductive filar forming a spiral inductor coil having a plurality of turns, wherein the spiral inductor coil is configured to generate an inductance at a resonant frequency;
• and
• an air gap having an air gap width that extends between adjacent spiral inductor coil turns of the plurality of turns,
• wherein the plurality of turns forms a multiple figure eight configuration having at least an innermost turn including a first crossover intersection, and an outermost turn including a second crossover intersection, wherein the first crossover intersection and the second crossover intersection are co-located at a center of the spiral inductor coil and each turn of the plurality of turns form a figure eight, and
• wherein the spiral inductor coil is constructed so that a ratio of the air gap width to the filar thickness is less than one.