Wireless power transmission apparatus
Provided is a wireless power transmission apparatus, including a source unit including a power resonator to transmit a wireless power to a target apparatus, and a near field controller to control a direction of a magnetic field of the power resonator.
1. A wireless power transmission apparatus, comprising:
a power resonator disposed between a substrate and a target apparatus and configured to transmit wireless power to the target apparatus; and
a material, configured to control a direction of a magnetic field of the power resonator,
wherein a portion of the material has a High Impedance Surface (HIS) such that a magnetic field of the power resonator is in-phase with the material.
2. The wireless power transmission apparatus of claim 1 , wherein the material controls a direction of the magnetic field of the source unit based on a location of the target apparatus.
3. The wireless power transmission apparatus of claim 1 , wherein the material is designed so that a magnetic field of the power resonator is in-phase with respect to the material.
4. The wireless power transmission apparatus of claim 1 , wherein the material comprises a U-shaped element comprising:
a side portion configured to control a direction of a side magnetic field of the source unit; and
a rear surface portion configured to control a direction of a rear surface magnetic field of the power resonator.
5. The wireless power transmission apparatus of claim 4 , wherein the material further comprises a direction adjusting portion configured to adjust a direction of the side portion and a direction of the rear surface portion.
6. The wireless power transmission apparatus of claim 5 , wherein the material controls the direction adjusting portion based on a location of a target resonator in the target apparatus.
7. The wireless power transmission apparatus of claim 1 , wherein the material moves relative to the power resonator.
8. The wireless power transmission apparatus of claim 7 , wherein the material moves according to a location of a target resonator in the target apparatus.
9. A method of transmitting wireless power, the method comprising:
transmitting the wireless power from a power resonator to a target apparatus; and
controlling a direction of a magnetic field of the power resonator with a material based on an in-phase characteristic of the magnetic field of the power resonator derived from a High Impedance Surface (HIS) of a portion of the material.
10. The method of claim 9 , wherein the controlling of the direction of the magnetic field comprises moving the material relative to the power resonator.
11. The method of claim 10 , wherein the material is moved according to a location of a target resonator in the target apparatus.
12. The method of claim 9 , wherein the controlling comprises controlling the direction of the magnetic field of the power resonator with the material based on a location of the target apparatus.