KR20160103968A - Dual-Mode Antenna and User Device - Google Patents

Abstract

The present invention provides a dual-mode antenna which simultaneously supports NFC communication and wireless power transmission and a user terminal having the same mounted therein. The antenna comprises an insulation sheet, an NFC coil of a loop shape, and a wireless power transmission coil.

Description

[0001] The present invention relates to a dual-mode antenna and a user terminal using the dual-

The present invention relates to a dual mode antenna for NFC and wireless power transmission and a user terminal using the dual mode antenna.

Recently, interest in energy-IT convergence technology is increasing. Energy-IT fusion technology is a fusion of IT technology that is rapidly developing into conventional energy technology, and there is Wireless Power Transfer (WPT) technology as a field of such energy-IT fusion technology. The term "wireless power transmission" refers to a technique for supplying electric power to an electric device wirelessly instead of a conventional electric power line. In order to charge a household electric appliance, a power supply cable is connected to an electric appliance or a charger Related research is being actively carried out because of the advantage of being able to charge wirelessly.

Wireless power transmission technologies currently in commercialization or research include magnetic induction and magnetic resonance. The magnetic induction type wireless power transmission technique uses a magnetic induction phenomenon between two coils, and can transmit a number of electric power at a distance of a few mm to several cm. Currently, it is applied to a transportation card, a wireless shaver, a electric toothbrush have. On the other hand, the magnetic resonance type wireless power transmission technique is a method of transmitting power by resonant coupling at a resonance frequency, and can transmit power of several tens of W at a distance of several meters or less, Factor values affect transmission efficiency.

Meanwhile, a large number of mobile terminals that have recently been released are equipped with an NFC module for NFC communication. Near Field Communication (NFC) is a proximity communication technology that transmits and receives data at a distance of about 10 cm using a frequency of 13.56 MHz band. NFC module is installed in mobile terminal and is used in various fields such as user authentication, ID card, credit card, mobile ticket, and mobile coupon.

Meanwhile, an NFC communication antenna (coil) is required for NFC communication. An NFC antenna is provided independently of an NFC reader and an antenna of an NFC tag. When implemented on an actual mobile terminal, an integrated dual antenna structure in which an NFC reader antenna and a tag antenna are integrated in a laminated structure is generally used.

In the case of wireless power transmission, another antenna (coil) for wireless power transmission is required. Therefore, in order to simultaneously support the NFC function and the wireless power transmission function on the mobile terminal, an antenna for each function must be mounted together. In this case, there is a problem that the antenna mounting space is narrow due to the limitation according to the size of the mobile terminal, and the size and thickness of the mobile terminal are increased due to the two kinds of antennas.

Accordingly, there is a need to introduce a technique for minimizing a required installation space while mounting an NFC antenna and a wireless power transmission antenna together in a mobile terminal.

In this regard, US Patent Application Publication No. US2010-0194334 discloses an invention entitled " RETROFITTING WIRELESS POWER AND NEAR-FIELD COMMUNICATION IN ELECTRONIC DEVICESZ ". The invention of U.S. Patent Publication No. US2010-0194334 relates to a power circuit for wireless power transmission and short range communication, wherein the electronic device having the power circuit includes a back housing having a wireless power receiving antenna and a conversion circuit. However, although the wireless power receiving antenna is disclosed in U.S. Patent Publication No. US2010-0194334 as being able to be used for the wireless power supply function or the NFC function, no specific configuration for simultaneously performing the wireless power supply function and the NFC function is disclosed .

"RETROFITTING WIRELESS POWER AND NEAR-FIELD COMMUNICATION IN ELECTRONIC DEVICES ", U.S. Patent Publication No. US2010-0194334,

In order to solve the above problems, the present invention provides a dual mode antenna supporting both NFC communication and wireless power transmission and a user terminal equipped with the dual mode antenna.

In addition, the present invention provides a dual mode antenna in which NFC antennas and wireless power transmission antennas are arranged so as not to overlap with each other to suppress communication performance degradation due to mutual interference, and a user terminal equipped with the dual mode antenna.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood from the following description.

A dual mode antenna according to an embodiment of the present invention includes: a loop-shaped NFC coil formed on the insulation sheet; And a radio power transmission coil formed on both sides of the insulation sheet and electrically connected to each other through a via hole passing through the insulation sheet, the radio power transmission coil being formed inside the loop-shaped NFC coil and electrically separated from the NFC coil , The wireless power transmission coil formed on both sides of the insulating sheet may form a loop such that the current is reinforced when viewed from the front side.

In the present invention, the wireless power transmission coils formed on both surfaces of the insulating sheet may rotate in the same direction as viewed from the front, and form a loop.

In the present invention, a pair of NFC coil connection terminals electrically connected to both ends of the NFC coil and a pair of wireless power transmission coil connection terminals electrically connected to both ends of the wireless power transmission coil are further provided can do.

In the present invention, any one of the pair of NFC coil connection terminals is electrically connected to one end of the NFC coil via a stitching via, and the pair of radio power transmission coil connection terminals and both ends of the radio power transmission coil And a pair of elongated patterns for electrically connecting the electrodes.

In the present invention, any one of the pair of NFC coil connection terminals is electrically connected to one end of the NFC coil through a jumper line, and the pair of radio power transmission coil connection terminals and the radio power And may further include a pair of extension patterns electrically connecting both ends of the transmission coil.

In the present invention, the pair of extension patterns may be disposed so as not to overlap with the NFC coil.

In the present invention, the pair of extension patterns may be formed on different surfaces of the NFC coil and the insulating sheet.

In the present invention, the stitching via may include two vias passing through the insulating sheet and a connecting pattern electrically connecting the two vias.

In the present invention, the NFC coil connection terminal and the wireless power transmission coil connection terminal may be electrically connected to an external NFC module and a wireless power transmission module, respectively.

In the present invention, a ferrite sheet formed to contact one surface of the insulating sheet may be further included.

In the present invention, the ferrite sheet may include a first ferrite sheet formed to be in contact with the NFC coil of the insulating sheet so as to be in contact with the NFC coil, and a second ferrite sheet formed in contact with the non- 2 ferrite sheet.

In the present invention, a slit for adjusting the step of the first ferrite sheet and the second ferrite sheet may be formed between the NFC coil and the wireless power transmission coil.

A user terminal according to an embodiment of the present invention may include the dual mode antenna.

According to one aspect of the present invention, an antenna mounting space can be efficiently arranged in a user terminal to simultaneously support NFC communication and wireless power transmission.

Further, in the user terminal, the NFC antenna and the wireless power transmission antenna are arranged so as not to overlap with each other, so that the communication performance deterioration due to mutual interference can be suppressed.

1 is an overall schematic diagram of a wireless power transmission system.
2 is a block diagram illustrating a detailed configuration of a user terminal according to an exemplary embodiment of the present invention.
FIG. 3 is an exploded view of a rear view and a rear cover of a user terminal body for explaining a case where a dual mode antenna according to an embodiment of the present invention is mounted on a rear cover of a user terminal.
4 is a front view and a rear view of a dual mode antenna according to an embodiment of the present invention.
5 is a front view and a rear view of a dual mode antenna according to another embodiment of the present invention.
6 is a side view for explaining a structure of a dual mode antenna according to an embodiment of the present invention.
7 is a front view and a rear view of a dual mode antenna according to another embodiment of the present invention.
8 is a front view and a rear view showing a detailed configuration of an NFC antenna unit which is a component of the dual mode antenna of FIG.
9 is a front view and a rear view showing a detailed configuration of an extension line portion which is a component of the dual mode antenna of FIG.
10 is a front view and a rear view showing a detailed configuration of a wireless power transmission coil which is a component of the dual mode antenna of FIG.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, detailed description of known related arts will be omitted when it is determined that the gist of the present invention may be unnecessarily obscured. In addition, numerals (e.g., first, second, etc.) used in the description of the present invention are merely an identifier for distinguishing one component from another.

Also, in this specification, when an element is referred to as being "connected" or "connected" with another element, the element may be directly connected or directly connected to the other element, It should be understood that, unless an opposite description is present, it may be connected or connected via another element in the middle.

In this specification, a user terminal is an electronic device supplied with power from the outside, supports NFC communication as one of means for communicating with other user terminals, and may be a mobile phone, a smart phone, The portable terminal may be a portable mobile terminal such as a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), a navigation device or the like or may communicate with an external device such as a TV, Any electronic device that performs may be applicable.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an overall schematic diagram illustrating the concept and operation of a wireless power transmission system.

1, the wireless power transmission system includes a wireless power transmission apparatus 10 (or a transmitter) for wirelessly transmitting power, a wireless power reception apparatus 20 (or a wireless power reception apparatus for wirelessly receiving power) Water electricity).

The wireless power transmission apparatus 10 and the wireless power reception apparatus 20 transmit power wirelessly in a magnetic induction manner.

The wireless power transmission device 10 emits an electromagnetic field to the outside using the transmission antenna 11 for power transmission. To this end, the wireless power transmission apparatus 10 receives AC power from the outside.

The wireless power transmission apparatus 10 rectifies the AC power supplied from an external input power supply to a DC power supply using an AC / DC converter (not shown), and thereafter supplies a DC / AC conversion circuit Converted to a high frequency AC power source through the transmission antenna 11 and transmitted to the wireless power receiving apparatus 20. [

The wireless power receiving apparatus 20 can receive the power signal transmitted from the wireless power transmitting apparatus 10 by using the receiving antenna 21. [ Specifically, a magnetic field is generated around the transmission antenna 11 by the current flowing through the transmission antenna 11 of the wireless power transmission apparatus 10, and the wireless power reception apparatus A voltage can be induced in the receiving antenna 21 of the antenna 20 so that electric power can be transmitted.

The wireless power receiving apparatus 20 can charge the load device 30 or supply driving power required for driving the wireless power receiving apparatus 20 using the transmitted power.

Hereinafter, a detailed configuration of a user terminal having a dual mode antenna according to an embodiment of the present invention will be described.

2 is a block diagram illustrating a detailed configuration of a user terminal according to an embodiment of the present invention.

As shown in FIG. 2, the user terminal includes an NFC module 200 for processing NFC communication and a wireless power transmission module 300 for performing a wireless power transmission function. The user terminal includes a dual mode antenna 100 including an NFC coil 110 electrically connected to the NFC module 200 and a wireless power transmission coil 120 electrically connected to the wireless power transmission module 300 .

The dual mode antenna 100 may be implemented in a dual loop shape in which the NFC coil 110 and the wireless power transmission coil 120 are spaced apart from each other by a predetermined distance. The dual mode antenna 100 may have a structure in which a pattern of the NFC coil 110 and the wireless power transmission coil 120 is formed on an insulating sheet and may be formed using a flexible circuit board (FPCB) .

At this time, the NFC coil 110 and the RF power transmission coil 120 are electrically separated from each other. Further, the NFC coil 110 and the RF power transmission coil 120 are formed by a NFC coil 110 and a wireless power transmission coil 120, The impedance matching of the coils can be adjusted by adjusting the spacing between the wireless power transmission coils 120.

The NFC module 200 controls the NFC coil 110 to perform NFC communication on the user terminal. Specifically, the NFC module 200 includes an NFC impedance matching unit 210, an NFC transceiver 220, and an NFC controller 230.

When the NFC function is requested by the operation of the application on the user or the user terminal, the control unit 400 of the user terminal operates the NFC module 200 to activate the NFC function.

The NFC impedance matching unit 210 may be installed between the NFC coil 110 and the NFC transceiver 220 to match the impedance between the NFC coil 110 and the NFC transceiver 220.

The NFC transceiver 220 may include a baseband processor and a communication protocol processing circuit, a register file, a UART serial interface, and the like. The respective components of the NFC transceiver 220 correspond to known technologies, and a description thereof will be omitted herein.

The NFC controller 230 is connected to the NFC transceiver 220 to control the overall operation of the NFC transceiver 220. In addition, the NFC controller 230 can communicate with an external host through a separate communication interface.

The wireless power transmission module 300 may include a wireless power transmission (W / C) impedance matching unit 310, a rectification unit 320 and a charging unit 330.

The W / C impedance matching unit 310 may be disposed between the wireless power transmission coil 120 and the rectification unit 320 to match the impedance between the wireless power transmission coil 120 and the rectification unit 320.

The rectification unit 320 rectifies the power signal inputted through the wireless power transmission coil 120 into half-wave rectification and rectifies it to DC power. The DC signal rectified by the rectifying unit 320 can be removed from the high-frequency noise component by a filtering unit (not shown), and then converted into a voltage required for the charging unit 330 or the driving of the device.

The charging unit 330 charges the external load device or the internal battery using the power converted into the required voltage.

Next, the detailed configuration of the dual mode antenna 100 according to an embodiment of the present invention will be described in detail.

FIG. 3 is an exploded view of a rear view and a rear cover of a user terminal body for explaining a case where a dual mode antenna according to an embodiment of the present invention is mounted on a rear cover of a user terminal.

As shown in FIG. 3, the dual mode antenna 100 may be mounted on the battery cover 700 of the user terminal. The dual mode antenna 100 may be attached to the inner surface of the battery cover 700 facing the main body 600 of the user terminal or may be formed integrally with the inside of the battery cover 700. The NFC coil connection terminal 130 and the W / C coil connection terminal 140 of the dual mode antenna 100 are connected to the inner side surface of the battery cover 700. In this case, An opening may be formed in the corresponding region so as to be exposed to the outside. At this time, the NFC coil connection terminal 130 is configured to form a pair of two terminals, and in the case of the W / C coil connection terminal 140, the two terminals may be constituted as a pair.

A NFC module connection terminal 620 and a W / C module connection terminal (not shown) are disposed on the rear surface of the main body of the user terminal at positions facing the NFC coil connection terminal 130 and the W / C coil connection terminal 140 of the dual mode antenna 100 610 may be formed. Therefore, when the battery cover 700 is coupled to the user terminal body 600, the NFC coil connection terminal 130 and the W / C coil connection terminal 140 are connected to the NFC module connection terminal 620 and the W / (Not shown). The NFC module connection terminal 620 or the W / C module connection terminal 610 is formed in a C-clip shape and connected to the NFC coil connection terminal 130 or the W / C coil connection terminal 140 by elasticity Can be maintained.

Hereinafter, an embodiment of a dual mode antenna 100 according to an embodiment of the present invention will be described in detail.

4 is a front view and a rear view of a dual mode antenna 100 according to an embodiment of the present invention.

4, a dual mode antenna 100 is formed by forming an NFC pattern on an insulation sheet 105 such as an FPCB. A pair of NFC coil connection terminals 130 are formed on the front surface of the insulation sheet 105, A pair of W / C coil connection terminals 140 can be formed.

The NFC coil connection terminal 130 is connected to the NFC coil 110 and can transmit a signal input through the NFC module connection terminal 620 to the outside or an NFC signal received from the outside to the NFC module 300 .

The NFC coil 110 may be formed on the entire surface of the insulating sheet 105 and may be formed as wide as possible along the outside of the insulating sheet 105 in order to maximize the diameter of the loop and reduce the number of turns of the loops and the capacitance between the windings .

One end of the NFC coil 110 is connected to one of the NFC coil connection terminals 132. The NFC coil 110 rotates inward to form a loop and one end of the NFC coil 110 inside the loop And is connected to one of the NFC coil connection terminals 134 outside the loop through a stitching via 150.

The stitching via 150 includes two vias 152 and 154 passing through the insulating sheet and a connecting pattern 156 formed between the two vias 152 and 154 to form a signal path . At this time, the connection pattern 156 may be formed on the rear surface of the insulating sheet 105.

The W / C coil connection terminal 140 is connected to the wireless power transmission coil 120 and can transmit / receive a power signal input through the W / C module connection terminal 610.

The wireless power transmission coil 120 may be formed inside the loop formed by the NFC coil 110. [ In this case, the diameter of the wireless power transmission coil 120 is relatively small as compared to the NFC coil 110, and thus, the wireless power transmission coil 120 is arranged on the front surface of the insulating sheet 105 And may be formed in a laminated structure on the rear surface.

At this time, the wireless power transmission coil 122 formed on the front surface of the insulating sheet 105 has a loop shape that converges to the inside, passes through the insulating sheet through the via hole 162 in the inside of the loop, (Not shown).

At this time, the wireless power transmission coil 122 formed on the front surface of the insulating sheet 105 and the wireless power transmission coil 124 formed on the rear surface are rotated in the same direction when viewed from the front, The electric currents flowing through the electrodes can be mutually reinforced.

Both ends (142, 144) of the W / C coil connection terminal and both ends of the wireless power transmission coil (120) are connected by a pair of extension patterns (170). The extension pattern 170 can have a variable shape according to the arrangement position of the W / C coil connection terminal 140, so that flexibility in designing the internal circuit of the user terminal 100 can be assured.

The extended pattern 170 is formed on the rear surface of the insulating sheet 105 and the W / C coil connecting terminals 142 and 144 pass through the insulating sheet through the pair of via holes 143 and 145, May be connected to one side of the formed elongated pattern 170.

The other side of the extension pattern 170 is connected to the wireless power transmission coil 120. An extended pattern of one of the pair of extended patterns 170 is connected to one end of the wireless power transmission coil 122 formed on the front surface of the insulating sheet 105 via the via hole 162, And is connected to the other end of the wireless power transmission coil 124 formed on the rear surface of the sheet.

As described above, the wireless power transmission coil 120 is electrically connected to the W / C coil connection terminal 140 and the W / C coil connection terminal 140 by the extended pattern 170 formed on the back surface of the via hole 162, 164, 143, Therefore, there is no overlapping area between the wireless power transmission coil 120 and the NFC coil 110, and performance degradation due to mutual interference can be prevented.

Meanwhile, a slit for level adjustment can be formed between the NFC coil 110 and the wireless power transmission coil 120. Referring to FIG. 6, a ferrite sheet 194 for a W / C coil and a ferrite sheet 192 for an NFC coil may be sequentially attached to the front surface of the insulating sheet 105. For reference, the ferrite sheet prevents magnetic flux shielding due to eddy current.

In this case, the size of the inner W / C coil ferrite sheet 194 is relatively smaller than that of the NCO coil ferrite sheet 192, and therefore, the thickness of the overlapping portion of the ferrite sheet 194 for W / C coils Becomes relatively thick compared to the thickness of the portion where only the ferrite sheet 192 for the NFC coil is attached.

Therefore, a terminal adjusting slit 198 is formed between the NFC coil 110 and the RF power transmitting coil 120 to control the step due to the thickness of the ferrite sheet, 120 or the extension pattern 170 can be prevented from being damaged.

5 is a front view and a rear view of a dual mode antenna according to another embodiment of the present invention.

5, the dual mode antenna 100 according to another embodiment of the present invention includes the NFC coil 110 formed on the insulating sheet 105, the NFC coil 110, A wireless power transmission coil 120 may be formed inside the loop of the antenna 110. [ The NFC coil 110 and the wireless power transmission coil 120 are connected to the NFC coil connection terminal 130 and the W / C coil connection terminal 140, respectively.

One end of the NFC coil 110 is connected to one of the NFC coil connection terminals 132. The NFC coil 110 rotates inward to form a loop and one end of the NFC coil 110 in the loop And may be connected to one of the NFC coil connection terminals 134 outside the loop through a jumper line 190.

Since the jumper wire 190 is formed on the NFC coil 110 formed on the front surface of the insulating sheet 105, the rear surface of the insulating sheet 105, in which the NFC signal is drawn or drawn, The line 190 does not block, and interference with the NFC coil 110 can be suppressed.

Next, a detailed configuration of a dual mode antenna according to another embodiment of the present invention will be described in detail.

7 is a front view and a rear view showing a detailed configuration of a dual mode antenna 1000 according to another embodiment of the present invention.

Referring to FIG. 7, the dual mode antenna 1000 includes an NFC antenna unit 1100 having an NFC coil formed thereon, a wireless power transmission coil 1300, and a wireless power transmission coil 1300 connected to an external wireless power transmission module And an extension line unit 1200 to extend the line. At this time, the NFC antenna unit 1100, the wireless power transmission coil 1300, and the extension line unit 1200 may be formed on separate insulation sheets, respectively.

In this case, the wireless power transmission coil 1300 may be disposed inside the loop formed by the NFC coil 1120 of the NFC antenna unit 1100, and in this case, the wireless power transmission coil 1300 May be connected to the outside of the NFC coil 1120 through the extension line unit 1200.

On the other hand, a ferrite sheet may be bonded to the dual mode antenna 1000. At this time, the ferrite sheet may be composed of a ferrite sheet for an NFC coil bonded to a position opposite to the NFC antenna unit 1100 and a ferrite sheet for a wireless power transmission coil bonded to a position opposite to the wireless power transmission coil 1300 .

8, the NFC antenna unit 1100 includes a first insulating sheet 1110 and an external NFC module 1110 formed on the front surface of the first insulating sheet 1110, And an NFC coil 1120 formed in a loop shape on the front surface of the first insulation sheet 1110 and connected to the NFC connection terminal 1130. The NFC connection terminal 1130 includes a pair of NFC connection terminals 1130 connected to the NFC connection terminal 1130,

At this time, one end of the NFC coil 1120 may be connected to the NFC connection terminal 1130 by an NFC connection terminal connection line 1140. In this case, the NFC connecting terminal connecting line 1140 may be embodied as a jumper line, or may be embodied as a stitching via formed through the first insulating sheet 1100.

In the NFC antenna unit 1100, an extension line slot 1150 can be formed inside the loop of the NFC coil 1120 so that the extension line unit 1200 can be inserted into the extension line slot 1150 And may be connected to the wireless power transmission coil 1300 inside the loop.

At this time, since the extension line unit 1200 is disposed between the front surface of the NFC antenna unit 1100 and the ferrite sheet, interference with the NFC coil 1120 due to the extension line can be reduced.

9, the extension line portion 1200 includes a second insulation sheet 1210 separate from the first insulation sheet 1110, and a second insulation sheet 1210 A pair of W / C connection terminals 1220 formed on the front surface of the second insulation sheet 1210 and connected to the wireless power transmission module, a pair of W / C extension lines 1230 formed on the rear surface of the second insulation sheet 1210, And a pair of joints 1260 connecting the W / C extension line 1230 with the wireless power transmission coil 1300.

At this time, the W / C extension line 1230 is connected to the W / C connection terminal 1220 through a pair of via holes 1240, and is connected to the junction portion 1260 through another pair of via holes 1250 .

As previously described, the wireless power transfer coil 1300 may be formed on a separate third insulating sheet. In this case, the wireless power transmission coil 1300 may be formed on both sides of the third insulation sheet.

Also, the wireless power transmission coil 1300 can be realized as a real coil made of a highly conductive material. In this case, both ends 1310 and 1320 of the real coil may be coupled to the joint portions 1262 and 1264 by soldering or the like.

Through the above-described configuration, the user terminal of the present invention can include an NFC antenna and a wireless power transmission antenna together in a narrow space, and avoids overlapping areas between NFC antennas and wireless power transmission antennas, There is an effect that the deterioration can be prevented.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments.

The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (13)

Insulating sheet;
A loop-shaped NFC coil formed on the insulating sheet; And
And a radio power transmission coil formed on both sides of the insulation sheet and electrically connected to each other through a via hole passing through the insulation sheet, the radio power transmission coil being formed inside the loop-shaped NFC coil and electrically separated from the NFC coil,
Wherein the wireless power transmission coil formed on both sides of the insulation sheet forms a loop such that the current is reinforced when viewed from the front side. The method according to claim 1,
Wherein the wireless power transmission coils formed on both sides of the insulation sheet rotate in the same direction as viewed from the front to form a loop. 3. The method of claim 2,
A pair of NFC coil connection terminals electrically connected to both ends of the NFC coil and a pair of radio power transmission coil connection terminals electrically connected to both ends of the radio power transmission coil, Dual mode antenna. The method of claim 3,
Wherein one of the pair of NFC coil connection terminals is electrically connected to one end of the NFC coil through a stitching via,
Further comprising a pair of extension patterns electrically connecting the pair of radio power transmission coil connection terminals to both ends of the radio power transmission coil. The method of claim 3,
Wherein one of the pair of NFC coil connection terminals is electrically connected to one end of the NFC coil through a jumper line,
Further comprising a pair of extension patterns electrically connecting the pair of radio power transmission coil connection terminals to both ends of the radio power transmission coil. 5. The method of claim 4,
And the pair of extension patterns are disposed so as not to overlap with the NFC coil. The method according to claim 6,
And the pair of extension patterns are formed on different surfaces of the NFC coil and the insulation sheet. 8. The method of claim 7,
Wherein the stitching via comprises two vias passing through the insulating sheet and a connecting pattern electrically connecting the two vias. 9. The method of claim 8,
Wherein the NFC coil connection terminal and the wireless power transmission coil connection terminal are electrically connected to an external NFC module and a wireless power transmission module, respectively. 10. The method of claim 9,
Further comprising a ferrite sheet formed to contact one surface of the insulating sheet. 11. The method of claim 10,
The ferrite sheet further includes a first ferrite sheet formed to be in contact with a position opposed to the NFC coil of the insulating sheet and a second ferrite sheet formed so as to be in contact with a position opposed to the wireless power transmission coil of the insulating sheet Wherein the antenna is a dual mode antenna. 12. The method of claim 11,
And a slit for adjusting the step of the first ferrite sheet and the second ferrite sheet is formed between the NFC coil and the wireless power transmission coil. A user terminal comprising the dual mode antenna of any one of claims 1 to 13.

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