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 dual mode antenna comprising:
an insulating sheet;
a near-field communication (NFC) coil provided on the insulating sheet to transmit and receive data; and
a wireless power coil provided on the insulating sheet to wirelessly transmit and receive power, and 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 0.10 mm to 0.20 mm and which are spaced apart from each other in a widthwise direction of the core wire,
wherein the plurality of patterns comprise 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 height of the at least one sub-pattern.
2. The dual mode 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 both ends of the wireless power coil, and
wherein the split pattern unit is spaced a predetermined distance from the pair of wireless power connection terminals.
3. The dual mode antenna of claim 1 , wherein the split pattern unit is disposed on both a top surface and a bottom surface of the insulating sheet.
4. The dual mode antenna of claim 3 , wherein the split pattern unit comprises:
a first split pattern unit formed on the top surface of the insulating sheet; and
a second split pattern unit formed on the bottom surface of the insulating sheet and electrically connected to the first split pattern unit.
5. The dual mode antenna of claim 4 , wherein current flows through the first split pattern unit and the second split pattern unit in the same direction, when viewed in front of the dual mode antenna.
6. The dual mode antenna of claim 4 , wherein the first split pattern unit and the second split pattern unit are disposed on a same position to be symmetrical to each other with respect to the insulating sheet.
7. The dual mode antenna of claim 4 , wherein patterns of the first split pattern unit and patterns of the second split pattern unit are disposed at different positions in a zigzag fashion with respect to the insulating sheet.
8. The dual mode 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.
9. The dual mode antenna of claim 8 , wherein the widths of the patterns of the split pattern unit are determined to be twice or less a surface thickness which current is capable of penetrating.
10. The dual mode antenna of claim 1 , wherein the split unit comprises two or more sub-patterns having same widths and heights.
11. The dual mode 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.