Wireless communication module and portable terminal including the same

1. A wireless communication module, comprising:

a controller configured to control wireless communication operations;

an antenna module that includes a first antenna device; and

a matching circuit configured to perform impedance matching between the controller and the antenna module wherein

the first antenna device includes a heat dissipating sheet with a first pattern that transceives wireless signals by detecting a surrounding magnetic flux.

2. The wireless communication module of claim 1 , wherein the heat dissipating sheet comprises at least one of natural graphite particles, compressed exfoliated graphite particles, copper, graphene particles, carbon nanotubes (CNT), and a graphene hybrid.

3. The wireless communication module of claim 1 , wherein

the heat dissipating sheet comprises a near field communication (NFC) antenna, and

the controller comprises an NFC chip that controls near field communication.

4. The wireless communication module of claim 1 , wherein

the first antenna device further comprises a magnetic sheet stacked on an upper surface of the heat dissipating sheet and that covers the first pattern in the heat dissipating sheet.

5. The wireless communication module of claim 4 , wherein the magnetic sheet comprises a ferrite sheet.

6. The wireless communication module of claim 1 , wherein

the heat dissipating sheet comprises a second pattern, and

a pattern width of the first pattern is narrower than that of the second pattern.

7. The wireless communication module of claim 1 , further comprising an impedance compensation unit configured to compensate impedance in the pattern in the heat dissipating sheet.

8. The wireless communication module of claim 7 , further comprising a detection unit configured to detect an impedance state of the pattern in the heat dissipating sheet, wherein

the impedance compensation unit adjusts a magnitude of the impedance based on the impedance state detected by the detection unit.

9. The wireless communication module of claim 1 , wherein

the antenna module comprises a second antenna device, and

the second antenna device comprises:

a flexible printed circuit board (FPCB); and

a pattern in the FPCB and configured to detect a surrounding magnetic flux and transceive a wireless signal.

10. The wireless communication module of claim 9 , wherein

the second antenna device further comprises a magnetic sheet stacked on one surface of the FPCB and that covers the pattern in the FPCB.

11. A portable terminal comprising:

a cover; and

an antenna device mounted on an inner surface of the cover, wherein

the antenna device comprises:

a heat dissipating sheet that emits heat to a lower temperature region wherein the heat dissipating sheet includes a pattern that detects a surrounding magnetic flux and transceiver a wireless signal; and

a magnetic sheet stacked on one surface of the heat dissipating sheet and that covers a pattern in the heat dissipating sheet.

12. The portable terminal of claim 11 , further comprising:

a flexible printed circuit board (FPCB) on which a plurality of semiconductor chips are mounted;

a connection terminal connected to at least one of one end and an other end of the pattern on the heat dissipating sheet; and

a main body terminal connected to the FPCB, wherein

the connection terminal is connected to the main body terminal.

13. The portable terminal of claim 11 , wherein

the antenna device further comprises a protection cover stacked on one surface of the heat dissipating sheet.

14. The portable terminal of claim 11 , wherein

the pattern formed in the heat dissipating sheet comprises first and second patterns, and

pattern intervals of the first and second patterns differ from each other.

15. A wireless communication module, comprising:

an antenna module that includes a first antenna device,

wherein the first antenna device includes a heat dissipating sheet and a magnetic sheet stacked on an upper surface of the heat dissipating sheet,

wherein the heat dissipating sheet includes a first pattern for transceiving wireless signals by detecting a surrounding magnetic flux, and magnetic sheet covers the first pattern in the heat dissipating sheet,

wherein the heat dissipating sheet comprises at least one of natural graphite particles, compressed exfoliated graphite particles, copper, graphene particles, carbon nanotubes (CNT), and a graphene hybrid, and the magnetic sheet comprises a ferrite sheet.

16. The wireless communication module of claim 15 , wherein the heat dissipating sheet comprises a second pattern, and pattern intervals of the first and second patterns differ from each other.

17. The wireless communication module of claim 15 , further comprising

a controller configured to control wireless communication operations; and

a matching circuit configured to perform impedance matching between the controller and the antenna module.

18. The wireless communication module of claim 17 , further comprising:

an impedance compensation unit configured to compensate impedance in the pattern of the heat dissipating sheet.

19. The wireless communication module of claim 18 , further comprising:

a detection unit configured to detect an impedance state of the pattern in the heat dissipating sheet, wherein

the impedance compensation unit adjusts a magnitude of the impedance based on the impedance state detected by the detection unit.

20. The wireless communication module of claim 15 , wherein

the antenna module comprises a second antenna device, and

the second antenna device comprises:

a flexible printed circuit board (FPCB); and

a pattern in the FPC that is configured to detect a surrounding magnetic flux and transceive a wireless signal,

wherein the second antenna device further comprises a magnetic sheet stacked on one surface of the FPCB and that covers the pattern in the FPCB.