Antenna, manufacturing process thereof and electronic device using the antenna
According to an exemplary embodiment of the present disclosure, an electronic device may include a housing having a first side facing a first direction, and a second side facing a second direction opposite to the first direction, a communication circuit disposed inside the housing, a display exposed through the first side of the housing, a conductive plate formed adjacent to the second side of the housing, a conductive coil formed inside the conductive plate when viewed from a top of the second side, and having a plurality of turns electrically connected to the communication circuit, a first non-conductive material formed inside the conductive plate when viewed from the top of the second side, and disposed at least partially between the conductive plate and the conductive coil and/or between the plurality of turns of the conductive coil, and a second non-conductive material for forming at least one part of the second side, and covering the conductive plate, the conductive coil, and the first non-conductive material. Various other exemplary embodiments are also possible.
1. An electronic device comprising:
a housing having a first side facing a first direction, and a second side facing a second direction opposite to the first direction;
a communication circuit disposed inside the housing;
a display exposed through the first side of the housing;
a conductive plate formed adjacent to the second side of the housing;
a conductive coil formed inside the conductive plate when viewed from a top of the second side, and having a plurality of turns electrically connected to the communication circuit;
a first non-conductive material formed inside the conductive plate when viewed from the top of the second side, and disposed at least partially between the conductive plate and the conductive coil and/or between the plurality of turns of the conductive coil; and
a second non-conductive material for forming at least one part of the second side, and covering the conductive plate, the conductive coil, and the first non-conductive material.
2. The electronic device of claim 1 , wherein the conducive coil is constructed of a single coil having the plurality of turns.
3. The electronic device of claim 1 , wherein the first non-conductive material has at least one groove which is concave in the first direction.
4. The electronic device of claim 3 , wherein the second non-conductive material fills the at least one groove.
5. The electronic device of claim 3 , wherein at least one part of the at least one groove is arranged on one virtual straight line.
6. The electronic device of claim 1 , further comprising a shielding material disposed between the second non-conductive material and the first side of the housing.
7. The electronic device of claim 6 , further comprising a battery packet disposed between the first side and second side of the housing, wherein the shielding material is disposed between the conductive coil and the battery pack.
8. The electronic device of claim 1 , wherein the conductive plate and the conductive coil are physically separated.
9. The electronic device of claim 1 , further comprising a Flexible Printed Circuit Board (FPCB), wherein one end of the FPCB is electrically connected to one end of the conductive coil, the other end of the FPCB and the other end of the conductive coil are electrically connected to the communication circuit, and a connection portion between the one end and the other end of the FPCB overlaps with the plurality of turns of the conductive coil.
10. The electronic device of claim 1 , wherein the conductive coil has a square spiral shape.
11. The electronic device of claim 1 , wherein the communication circuit supports near-field communication or magnetic signal transmission/reception.
12. The electronic device of claim 1 , further comprising a wireless charging circuit electrically connected to the conductive coil.
13. The electronic device of claim 12 , further comprising a control circuit, wherein the control circuit selectively connects the conductive coil to the communication circuit and the wireless charging circuit.