Planar spiral induction coil having increased quality (q)-factor and method for designing planar spiral induction coil
AssigneeSamsung Electronics Co., Ltd.
InventorsKi Young Kim, Mikhail Makurin, Vladimir Parfenyev, Nikolay Olyunin, Keum Su Song
Life of this patent
Estimating the term…
Abstract
A planar spiral induction coil includes a strip-shaped coil having at least one turn. The at least one turn has a width that changes as a distance from a beginning of the strip-shaped increases in a length direction of the strip-shaped coil. each turn of the at least one turn has a respective width that causes an equal current to flow through each turn of the at least one turn.
Claims20
A planar spiral induction coil comprising:
- a strip-shaped coil having at least one turn, the at least one turn having a width that changes as a distance from a beginning of the strip-shaped coil increases in a length direction of the strip-shaped coil;
- wherein each turn of the at least one turn has a respective width that causes an equal current to flow through each turn of the at least one turn.
A wireless power transmitter comprising:
- a source resonator configured to transmit wireless power to a wireless power receiver via resonance with a target resonator of the wireless power receiver, and comprising a planar spiral induction coil, the planar spiral induction coil comprising a strip-shaped coil having at least one turn, the at least one turn having a width that changes as a distance from a beginning of the strip-shaped coil increases in a length direction of the strip-shaped coil;
- and
- a power supply configured to supply power to the source resonator;
- wherein each turn of the at least one turn has a respective width that causes an equal current to flow through each turn of the at least one turn.
A wireless power receiver comprising:
- a target resonator configured to receive wireless power from a wireless power transmitter via resonance with a source resonator of the wireless power transmitter, and comprising a planar spiral induction coil, the planar spiral induction coil comprising a strip-shaped coil having at least one turn, the at least one turn having a width that changes as a distance from a beginning of the strip-shaped coil increases in a length direction of the strip-shaped coil;
- and
- a load configured to receive power from the target resonator;
- wherein each turn of the at least one turn has a respective width that causes an equal current to flow through each turn of the at least one turn.
A method of designing a planar spiral induction coil, the method comprising:
- setting a number of turns of at least one turn in a strip-shaped coil included in the planar spiral induction coil, the at least one turn having a width that changes as a distance from a beginning of the strip-shaped coil increases in a length direction of the strip-shaped coil;
- and
- determining a respective width of each turn of the at least one turn so that an equal current flows through each turn of the at least one turn.
A planar spiral induction coil comprising:
- a planar coil having at least turn;
- wherein each turn of the at least one turn has a respective width that is different from a respective width of every other turn of the at least one turn and causes an equal current to flow through each turn of the at least one turn.
Dependencies are inferred from the claim text.