Antenna for wireless power, and dual mode antenna comprising same
Provided is a wireless power antenna for wirelessly transmitting, receiving, or relaying power, the wireless power antenna comprising an insulating sheet and a wireless power coil including a split pattern unit including a plurality of patterns spaced from each other in at least a region thereof in a widthwise direction, wherein the split pattern unit is disposed on both a top surface and a bottom surface of the insulating sheet.
1. A wireless power antenna for wirelessly transmitting, receiving, or relaying power, the wireless power antenna comprising:
an insulating sheet; and
a wireless power coil including;
a core wire wound in a loop shape on the insulating sheet; and
a split pattern unit formed at a portion of the core wire and including a plurality of patterns having a width of 0.1 mm to 0.2 mm into which the core wire is split at the portion and which are disposed spaced apart from each other in a widthwise direction of the core wire,
wherein the split pattern unit is disposed on both a top surface and a bottom surface of the insulating sheet,
wherein the plurality of patterns comprises a main pattern and at least one sub-pattern, and
wherein at least one of a width and a height of the main pattern exceeds a width or a height of the at least one sub-pattern, thereby having an improved quality factor.
2. The wireless power antenna of claim 1 , further comprising a pair of wireless power connection terminals formed on one surface of the insulating sheet and electrically connected to each end of the wireless power coil, and
wherein the split pattern unit is spaced a predetermined distance from the wireless power connection terminal.
3. The wireless power antenna of claim 1 , wherein the wireless power coil comprises;
a first pattern unit formed on the top surface of the insulating sheet; and
a second pattern unit formed on the bottom surface of the insulating sheet and electrically connected to the first pattern unit.
4. The wireless power antenna of claim 3 , wherein current flows through the first pattern unit and the second pattern unit in the same direction to strengthen an intensity of the current, when viewed in front of the wireless power antenna.
5. The wireless power antenna of claim 3 , wherein the split pattern unit comprises:
a first split pattern unit included in the first pattern unit;
a second split pattern unit included in the second pattern unit and electrically connected to the first split pattern unit.
6. The wireless power antenna of claim 5 , wherein patterns of the first split pattern unit and patterns of the second split pattern unit are disposed on same positions to be symmetrical to each other with respect to the insulating sheet.
7. The wireless power antenna of claim 5 , wherein patterns of the first split pattern unit and patterns of the second split pattern unit are disposed at different positions with respect to the insulating sheet.
8. The wireless power antenna of claim 1 , wherein the plurality of patterns are spaced the same distance from each other.
9. The wireless power antenna of claim 1 , wherein widths of patterns of the split pattern unit are determined such that non-conducting regions are not generated in the patterns.
10. The wireless power antenna of claim 9 , wherein the widths of the patterns of the split pattern unit are determined to be twice or less than a surface thickness which current is capable of penetrating.
11. The wireless power antenna of claim 1 , wherein the split pattern unit comprises two or more sub-patterns having same widths and heights.
12. The wireless power antenna of claim 1 , wherein the split pattern unit comprises two or more sub-patterns having different widths, different heights or different widths and heights.