ANTENNA AND MOBILE TERMINAL HAVING THE SAME

• US 20130267170A1
• Filed: 11/26/2012
• Published: 10/10/2013
• Est. Priority Date: 04/05/2012
• Status: Active Grant

• Current Assignee: Rovi Guides, Inc. (Adeia Inc.)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: KIM, Youngtae, CHONG, Kabsung, KIM, Jongoh, YI, Mizi, HAN, Kiwon, JEOUNG, Euntaek
• Granted Patent: US 8,995,910 B2
• Time in Patent Office: Days
• US Class Current: 455/41.1
• CPC Class Codes: H01F 27/2804 Printed windings
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 27/366 made of ferromagnetic material
• CPC Class Codes: H01F 27/38 Auxiliary core members; Auxiliary coils or windings
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142
• CPC Class Codes: H01Q 1/40 Radiating elements coated with or embedded in protective material
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 5/40 Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 7/08 Ferrite rod or like elongated core
• CPC Class Codes: H04B 1/3833 Hand-held transceivers
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04M 1/026 Details of the structure or mounting of specific components

Abstract

An antenna and a mobile terminal having the antenna are discussed. According to an embodiment, the antenna can include a flexible board having a first region and a second region; a high frequency antenna pattern formed in the first region of the flexible board to transceive a wireless signal by detecting a magnetic flux; a low frequency antenna pattern formed in the second region of the flexible board to generate an induced current; and a magnetic sheet stacked on one surface of the flexible board to simultaneously cover both of the high frequency antenna pattern and the low frequency antenna pattern, the magnetic sheet having a high magnetic permeability for both a high frequency and a low frequency.

Claims

1. An antenna, comprising:

a flexible board having a first region and a second region;

a high frequency antenna pattern formed in the first region of the flexible board to transceive a wireless signal by detecting a magnetic flux;

a low frequency antenna pattern formed in the second region of the flexible board to generate an induced current; and

a magnetic sheet stacked on one surface of the flexible board to simultaneously cover both of the high frequency antenna pattern and the low frequency antenna pattern, the magnetic sheet having a high magnetic permeability for both a high frequency and a low frequency.

2. The antenna of claim 1, wherein the high frequency antenna pattern comprises an NFC (near field communication) antenna.

3. The antenna of claim 1, wherein the low frequency antenna pattern comprises a wireless charging coil for charging a battery of a terminal including the antenna.

4. The antenna of claim 1, wherein the magnetic sheet comprises a ferrite sheet.

5. The antenna of claim 1, wherein each of the high frequency antenna pattern and the low frequency antenna pattern is exposed via both surfaces of the flexible board by passing through the flexible board.

6. The antenna of claim 1, further comprising:

a pair of first connecting terminals passing through the magnetic sheet to be connected with both ends of the low frequency pattern, respectively; and

a pair of second connecting terminals passing through the magnetic sheet to be connected with both ends of the high frequency pattern, respectively.

7. The antenna of claim 6, wherein the first connecting terminals and the second connecting terminals are exposed via a surface of the magnetic sheet by passing through the magnetic sheet.

8. The antenna of claim 1, wherein the magnetic sheet has a magnetic permeability (μ

r) of 130˜

190 in a frequency range between 100 kHz and 14 MHz.

9. The antenna of claim 1, wherein the high and low frequency antenna patterns are disposed in the same plane.

10. A mobile terminal, comprising:

a case forming an exterior of the mobile terminal and including electronic components mounted inside;

a backside cover configured to cover one side of the case; and

an antenna attached to an inner surface of the backside cover,

wherein the antenna comprises;

a flexible board having a first region and a second region;

a high frequency antenna pattern formed in the first region of the flexible board to transceive a wireless signal by detecting a magnetic flux;

a low frequency antenna pattern formed in the second region of the flexible board to generate an induced current; and

a magnetic sheet stacked on one surface of the flexible board to simultaneously cover both of the high frequency antenna pattern and the low frequency antenna pattern, the magnetic sheet having a high magnetic permeability for both a high frequency and a low frequency.

11. The mobile terminal of claim 10, wherein the high frequency antenna pattern comprises an NFC (near field communication) antenna and the low frequency antenna pattern comprises a wireless charging coil.

12. The mobile terminal of claim 10, wherein the magnetic sheet comprises a ferrite sheet.

13. The mobile terminal of claim 10, wherein each of the high frequency antenna pattern and the low frequency antenna pattern is exposed via both surfaces of the flexible board by passing through the flexible board.

14. The mobile terminal of claim 10, further comprising:

a pair of first connecting terminals passing through the magnetic sheet to be connected with both ends of the low frequency pattern, respectively; and

a pair of second connecting terminals passing through the magnetic sheet to be connected with both ends of the high frequency pattern, respectively.

15. The mobile terminal of claim 14, further comprising:

a first body terminal provided to the one side of the case and configured to be connected with a printed circuit board within the case,

wherein when the backside cover is attached to the case, the first connecting terminal is connected with the first body terminal by passing through the magnetic sheet to be exposed via a surface of the magnetic sheet.

16. The mobile terminal of claim 14, further comprising:

a second body terminal provided to the one side of the case and configured to be connected with a battery,

wherein when the backside cover is attached to the case, the second connecting terminal is connected with the second body terminal by passing through the magnetic sheet to be exposed via a surface of the magnetic sheet.

17. The mobile terminal of claim 10, further comprising:

a recessed part provided to an inner surface of the backside cover to receive the antenna therein.

18. The mobile terminal of claim 10, wherein the magnetic sheet has a magnetic permeability (μ

r) of 130˜

190 in a frequency range between 100 kHz and 14 MHz.

19. The mobile terminal of claim 10, wherein the low frequency antenna pattern comprises a wireless charging coil for charging a battery of the mobile terminal.

20. The mobile terminal of claim 10, wherein the high and low frequency antenna patterns are disposed in the same plane.