Abstract: A resonant coil with integrated capacitance includes at least one separation dielectric layer and a plurality of conductor layers stacked in an alternating manner. Each of the plurality of conductor layers includes a first conductor sublayer and second conductor sublayer having common orientation and a sublayer dielectric layer separating the first and second conductor sublayers. Adjacent conductor layers of the plurality of conductor layers have different orientations.

Abstract: A resonant coil with integrated capacitance includes at least one separation dielectric layer and a plurality of conductor layers stacked in an alternating manner. Each of the plurality of conductor layers includes a first conductor sublayer and second conductor sublayer having common orientation and a sublayer dielectric layer separating the first and second conductor sublayers. Adjacent conductor layers of the plurality of conductor layers have different orientations.

Abstract: A resonant coil with integrated capacitance includes at least one separation dielectric layer and a plurality of conductor layers stacked in an alternating manner. Each of the plurality of conductor layers includes a first conductor sublayer and second conductor sublayer having common orientation and a sublayer dielectric layer separating the first and second conductor sublayers, each conductor layer having multiple discontinuities.

Abstract: A resonant coil structure may include a plurality of conductors, including: a first conductor having a first end and a second end; a second conductor having a third end and a fourth end; a third conductor having a fifth end and a sixth end; and a fourth conductor having a seventh end and an eight end; and at least one galvanic coupling conductor that galvanically couples the first end to the fifth end and galvanically couples the fourth end to the eighth end.

Abstract: A resonant coil includes a plurality of conductors forming a plurality of inductively coupled current loops. The plurality of conductors include a first conductor having a first end and a second end, the first end and the second end being separated by a first gap; and a second conductor having a third end and a fourth end, the third end and the fourth end being separated by a second gap. The resonant coil also includes at least one standalone capacitor comprising at least one first capacitor connected to the first end and the second end of the first conductor.

Abstract: A magnetic core may have one or more notches in a center post, backplate and/or outer rim. Such notches may reduce or eliminate dimensional resonance and/or reduce the amount of magnetic material. A magnetic core with or without notches may omit a backplate and/or an outer rim.

Abstract: Some aspects relate to an apparatus, comprising: a coil; an electronic circuit; and an electrically conductive shield positioned between the coil and the electronic circuit. Some aspects relate to an apparatus, comprising: a coil; an electronic circuit; and a magnetic core magnetically coupled to the coil, the magnetic core having an overhang protruding on a side of the magnetic core facing the electronic circuit.

Abstract: A resonant coil with integrated capacitance includes at least one separation dielectric layer and a plurality of conductor layers stacked in an alternating manner. Each of the plurality of conductor layers includes a first conductor sublayer and second conductor sublayer having common orientation and a sublayer dielectric layer separating the first and second conductor sublayers. Adjacent conductor layers of the plurality of conductor layers have different orientations.

Abstract: A resonant coil with integrated capacitance includes at least one separation dielectric layer and a plurality of conductor layers stacked in an alternating manner. Each of the plurality of conductor layers includes a first conductor sublayer and second conductor sublayer having common orientation and a sublayer dielectric layer separating the first and second conductor sublayers, each conductor layer having multiple discontinuities.