KR20140076222A - Antenna for wireless charging and Dual mode antenna having the same - Google Patents

Abstract

The present invention relates to an antenna for wireless power and a dual mode antenna comprising the same. The antenna for wireless power according to the present invention, for transceiving and relaying power wirelessly, comprises an insulation sheet and a divided pattern unit formed in at least one partial region thereof, wherein the divided pattern unit includes a plurality of patterns spaced apart from each other in the widthwise direction and includes a coil for wireless power arranged on the upper and lower surfaces of the insulation sheet.

Description

[0001] The present invention relates to an antenna for wireless power and a dual mode antenna having the antenna.

The present invention relates to a wireless power antenna and a 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 transmits power by resonant coupling at a resonance frequency, and it can transmit several tens of watts at a distance of several meters or less, and the fidelity of the resonator Factor values affect transmission efficiency. Accordingly, various technologies for improving the fidelity have been developed in the wireless power transmission technology. In this connection, there is a related art in which US Patent Publication No. 2008/0157272 (hereinafter referred to as "Prior Art Document 1"), Korean Patent Publication No. 0637078 (hereinafter referred to as "Prior Art Document 2") and US Patent Publication No. 4392013 Quot; Prior Art Document 3 ") and the like. However, in both the prior art document 1 and the prior art document 2, there is a high possibility that a metal layer is disposed only on one side of the substrate, and thus a necessary number of winders can not be secured. Also, the prior art document 3 only discloses a method of manufacturing a fine pattern film.

On the other hand, recently, many mobile terminals are equipped with a short-range wireless communication module for short-range wireless communication. Near Field Communication is a proximity communication technology for transmitting and receiving data at a distance of about 10 cm using a frequency of 13.56 MHz band. The short-range wireless communication module is mounted on a mobile terminal and is used in various fields such as user authentication, identification card, credit card, mobile ticket, mobile coupon, and the like.

On the other hand, an antenna (coil) for short-range wireless communication is required for short-range wireless communication. The short-range wireless communication antenna includes a short-range wireless communication reader and an antenna of a short-range wireless communication tag. When the short-range wireless communication antenna is implemented on an actual mobile terminal, an integrated dual- An antenna structure is used.

In the case of wireless power transmission, another antenna (coil) for wireless power transmission is required. Therefore, in order to support both the short-range wireless communication 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 demand for introducing a technique for minimizing a required installation space while mounting a short-range wireless communication antenna and a wireless power transmission antenna together in a mobile terminal.

In this regard, U.S. Published Patent Application No. 2010-0194334 (hereinafter referred to as "Prior Art 4") is disclosed. Prior Art 4 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. Although the prior art document 4 discloses that the wireless power receiving antenna can be used for the wireless power supply function or the near field wireless communication function, there is no specific structure for simultaneously performing the wireless power supply function and the short range wireless communication function .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a wireless power antenna and a dual mode antenna capable of remarkably improving the fidelity by a simple structure in order to solve the above problems. Specifically, it is intended to prevent the occurrence of a region in which a current does not pass through the conductor due to the skin effect, thereby improving the fidelity.

Further, it is an object of the present invention to provide a radio power antenna capable of securing a necessary number of turns when a wireless power coil pattern is provided on a narrow insulating sheet.

It is another object of the present invention to provide a dual mode antenna capable of short-range wireless communication with transmission / reception / relay of wireless power by one antenna.

It is an object of the present invention to provide an antenna for wireless transmission and reception of electric power, which includes an insulating sheet and a divided pattern portion including a plurality of patterns spaced apart from each other in the width direction, And a wireless power coil provided on the top and bottom surfaces of the insulating sheet.

Here, the wireless power coil may include a first pattern portion provided on an upper surface of the insulating sheet, and a second pattern portion electrically connected to the first pattern portion and provided on a lower surface of the insulating sheet. The division pattern unit may include a first division pattern unit provided in the first pattern unit and a second division pattern unit connected to the first division pattern unit and provided in the second pattern unit.

Further, a current flowing along the first pattern portion and the second pattern portion may flow in a current reinforcing direction. For example, currents flowing along the first pattern portion and the second pattern portion may flow in the same direction.

Each of the patterns forming the first divided pattern portion and the second divided pattern portion may be disposed in the same phase with respect to the insulating sheet, or may be disposed to cross each other with respect to the insulating sheet. Furthermore, the patterns may be spaced apart from each other at equal intervals, and may have the same width.

It is another object of the present invention to provide a method of manufacturing a semiconductor device, which includes an insulating sheet, a short-range wireless communication coil provided in the insulating sheet to transmit and receive data, and a plurality of patterns And a wireless power coil having at least a part of the divided pattern portion including the divided pattern portion.

Here, the divided pattern portion may be provided on both the upper surface and the lower surface of the insulating sheet. For example, the divided pattern portion may include a first divided pattern portion provided on the upper surface of the insulating sheet, and a second divided pattern portion electrically connected to the first divided pattern portion and provided on the lower surface of the insulating sheet. In addition, currents flowing along the first divided pattern portion and the second divided pattern portion may flow in the same direction. Furthermore, the first divided pattern portion and the second divided pattern portion may be disposed in the same phase with respect to the insulating sheet, or may be arranged to cross each other with respect to the insulating sheet. In this case, the patterns may have the same width and spaced apart from each other at equal intervals.

It is another object of the present invention to provide an antenna for wirelessly transmitting / receiving electric power and relaying electric power, comprising: an insulation sheet; and a wireless communication unit provided in the insulation sheet and having a divided pattern portion including a plurality of patterns spaced apart from each other in the width direction. And a power coil, wherein a fidelity (Q factor) of the divided pattern portion is set to be equal to or greater than a fidelity (Q factor) of a single pattern portion.

Here, the divided pattern portions may be provided on both the upper surface and the lower surface of the insulating sheet, and may be connected to each other to conduct electricity. In this case, the electric currents flowing in the divided pattern portions provided on the upper surface and the lower surface of the insulating sheet can flow in the same direction. In addition, the patterns may be spaced apart from one another by the same distance and have the same width.

It is another object of the present invention to provide an antenna for wirelessly transmitting / receiving electric power and relaying electric power, comprising: an insulation sheet; and a wireless communication unit provided in the insulation sheet and having a divided pattern portion including a plurality of patterns spaced apart from each other in the width direction. Wherein a width of each of the patterns constituting the divided pattern portion is determined so as not to generate a region in which current does not flow in each of the patterns.

For example, the width of each pattern constituting the divided pattern portion can be determined to be twice or less than the thickness of the skin that can penetrate the current. In addition, the interval between each pattern constituting the divided pattern portion can be determined to be constant.

For example, the divided pattern portion may have three or more and eight or less patterns, and the width of each pattern may be determined to be 0.10 mm or more and 0.20 mm or less, and the distance between each pattern may be 0.05 mm or more and 0.1 mm or less .

Meanwhile, the divided pattern portions may be provided on both the upper surface and the lower surface of the insulating sheet, and may be connected to each other to conduct electricity. In addition, currents flowing in the divided pattern portions provided on the upper and lower surfaces of the insulating sheet can flow in the same direction.

According to the configuration of the present invention as described above, the wireless power antenna can prevent a region in which current does not flow by the divided pattern portion having a plurality of patterns, thereby significantly improving the fidelity. Furthermore, by providing both the upper and lower surfaces of the one sheet of the electric power coil, it is possible to sufficiently secure the electric power required for wireless power transmission and reception.

Also, there is provided a dual mode antenna capable of short-range wireless communication with transmission / reception of wireless power, while providing a simple and thin antenna with a wireless power coil and a co- .

1 is a schematic view showing a configuration of a wireless power transmission system,
2 is a front view showing a front view of a wireless power antenna according to an embodiment,
Fig. 3 is a rear view of Fig. 2,
4 is a schematic view for explaining the skin effect,
5 is a cross-sectional view showing a coil of a single pattern portion,
FIG. 6 is a partial enlarged view of the 'VI' region of FIG. 2,
Figs. 7 and 8 are schematic diagrams for determining the width of each pattern of the divided pattern portion,
9 and 10 are side views showing the arrangement of the first division pattern portion and the second division pattern portion,
11 is a block diagram illustrating a configuration of a user terminal having a dual mode antenna according to an embodiment.
12 is a rear view of the main body of the user terminal,
13 is a front view of the battery cover of the user terminal,
14 is a front view of a dual mode antenna according to one embodiment,
15 is a rear view of a dual mode antenna according to one embodiment.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the drawings. First, a wireless power transmission system will be described, and a wireless power antenna according to the present invention will be described.

1 is a schematic diagram showing the configuration of a wireless power transmission system.

Referring to FIG. 1, a wireless power transmission system includes a wireless power transmission apparatus (transmitter) 10 for transmitting power wirelessly and a wireless power receiving apparatus (wireless power receiving apparatus) 20 for wirelessly receiving power.

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

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 such as a terminal or supply the driving power necessary for driving the wireless power receiving apparatus 20 by using the transmitted power.

Meanwhile, although the above-described wireless power transmission system describes a method of wirelessly transmitting power by a magnetic induction method, the wireless power antenna and / or the dual mode antenna described below are not limited to the magnetic induction type, The present invention is applicable to a resonance type wireless power antenna and / or a dual mode antenna.

Hereinafter, various embodiments of a wireless power antenna used for wireless power will be described with reference to the drawings.

2 is a front view showing a front view of the antenna 100 for wireless power according to an embodiment, and Fig. 3 is a rear view of Fig. The wireless power antenna 100 described below can transmit / receive wirelessly or relay wireless power. That is, the wireless power antenna 100 functions as both a wireless power transmission antenna, a wireless power reception antenna, and a wireless power relay antenna.

Referring to FIGS. 2 and 3, the wireless power antenna 100 according to an exemplary embodiment may include an insulation sheet 110 first.

The insulating sheet 110 provides a space for mounting a wireless power coil 120, which will be described later, and is generally made of a printed circuit board (PCB) or a flexible printed circuit board (FPCB).

A pair of wireless power connection terminals 112 and 114 to which both ends of the wireless power coil 120 are connected may be provided on one surface of the insulation sheet 110. When the wireless power antenna 100 of the present invention is provided in a device such as a terminal, the connection terminals 112 and 114 may be connected to a module connection terminal (not shown) of the terminal to transmit power. Alternatively, the wireless power connection terminals 112 and 114 may be connected to the connection terminals of the wireless power transmission apparatus and wirelessly transmit power through the wireless power coils 120. [

Meanwhile, the wireless power antenna 100 according to the present embodiment forms a pattern of the wireless power coil 120 on the insulating sheet 110. For example, one end of the wireless power coil 120 is connected to one of the pair of wireless power connection terminals 112 and 114, and a loop-shaped And the other end is again connected to the other one of the pair of wireless power connection terminals 112 and 114.

In general, when the wireless power antenna 100 is used in a portable terminal or the like, the size of the insulating sheet 110 is very small, so that the area of the pattern of the wireless power coil 120 is also narrowed. Therefore, when the pattern of the wireless power coil 120 is provided on the upper surface of the insulating sheet 110, it is not possible to secure a sufficient number of winders necessary for wireless power transmission and / or reception. Here, the winding of the wireless power coil determines the impedance of the coil, and by appropriate impedance it is possible to cover the frequency range suitable for wireless power transmission and / or reception. As a result, ensuring the proper winding of the coil means that it can cover the frequency range suitable for wireless power transmission and / or reception. Therefore, if the required amount of winding is not ensured when the wireless power coil 120 is provided only on the upper surface of the insulating sheet 110, it means that the frequency region of the wireless power transmission and / or reception can not be covered. . In order to solve such a problem, the wireless power antenna 100 according to the present embodiment can have a pattern of the wireless power coil 120 on both the upper surface and the lower surface of the insulating sheet 110. That is, both the upper surface and the lower surface of the insulating sheet 110 are provided with the pattern of the wireless power coil 120, so that it is possible to secure a sufficient number of springs necessary for wireless power transmission and / or relay.

For example, the wireless power coil 120 may have a first pattern portion 130 formed on the upper surface of the insulating sheet 110 and a second pattern portion 140 formed on the lower surface of the insulating sheet 110 . The first pattern unit 130 may have a loop shape in which one end is connected to the connection terminal 112 and extends from the connection terminal 112 and converges from the upper surface of the insulation sheet 110 toward the inside. The other end of the first pattern portion 130 on the upper surface of the insulating sheet 110 is electrically connected to the second pattern portion 140 of the lower surface through the conductive portion 145 penetrating the insulating sheet 110, . The conductive part 145 may be formed of, for example, a via hole or the like.

One end of the second pattern portion 140 is connected to the conductive portion 145 on the lower surface of the insulating sheet 110 and extends from the conductive portion 145 to form a pattern from the inside to the outside of the loop. The other end of the second pattern portion 140 is connected to the connection terminal 114 by being connected to the extended pattern portion 160 of the upper surface of the insulating sheet 110 through the via hole 150 and the like.

The first pattern portion 130 formed on the upper surface of the insulating sheet 110 and the second pattern portion 140 formed on the lower surface may be rotated in the same direction when viewed from the front to form a loop. That is, when a current flows along the wireless power coil 120, a current can flow in the first pattern portion 130 and the second pattern portion 140 in the same direction. When a current flows in the first pattern part 130 and the second pattern part 140 of the wireless power coil 120 provided on both sides of the insulating sheet 110 in the same direction, The current flowing through the pattern unit 130 and the current flowing through the second pattern unit 140 are strengthened to improve the efficiency in the case of transmitting power wirelessly.

On the other hand, when a current flows along a conductor such as a coil, the current does not flow through the entire cross-sectional area of the conductor but flows along some surface in the cross-sectional area, which is defined as a so-called 'skin effect'. The skin effect refers to a phenomenon in which current flows only near the surface of a conductor when a high frequency current is applied to a conductor such as a metal. The skin effect is generated because the direction of the current flowing along the conductor rapidly changes, so that an induced electromotive force is generated inside the conductor, thereby making it difficult for the current to flow in the center of the conductor

For example, when a current is passed through a single core wire, for example, a coil having a single pattern portion as shown in FIG. 4, a region A in which a coil current having a predetermined thickness? And a region B in which no current flows is generated in the coil. Here, the thickness of the skin, through which the current penetrates into the conductor and the current can flow, is expressed by the following equation (1).

In Equation (1), δ is the thickness of the skin through which a current can flow, f is frequency, μ is permeability in vacuum, and ρ is the resistivity of the conductor. This skin effect limits the amount of current flowing through the coil, which significantly reduces its efficiency when transmitting and receiving power wirelessly, significantly reducing the " Q factor ". 5, when a current flows along the inside of the coil 40 composed of a single core wire, that is, a single pattern part, a current flows along the area A by the skin thickness? Determined according to Equation (1) And a region B in which no current flows is formed.

In this embodiment, the divided pattern portion 200 (see FIG. 6) may be provided in at least a part of the region of the wireless power coil 120 to prevent the fidelity Q from being lowered due to the skin effect. For example, the wireless power coil 120 is connected to the wireless power connection terminals 112 and 114 by one core wire, and is spaced apart from the wireless power connection terminals 112 and 114 by a predetermined distance, (200). However, the present invention is not limited thereto, and it is of course possible that the division pattern unit 200 is directly connected to the above-described wireless power connection terminals 112 and 114.

Here, the divided pattern units 200 include a plurality of patterns 220 spaced from each other in the width direction. 6 is an enlarged view of a part of the region " VI " in Fig. 2 for showing the shape of the divided pattern portion 200. Fig.

Referring to FIG. 6, each of the divided patterns 200 is divided into a plurality of strands in a width direction to form respective patterns 220a to 220f. In this case, the patterns 220a to 220f may be spaced apart from each other at equal intervals, and may have the same width.

For example, in FIG. 6, six patterns 220a to 220f may be defined as patterns separated from one core wire. In this manner, if a divided pattern portion including a plurality of patterns is provided instead of a single pattern portion formed by one core wire, a region in which current does not flow in the conductor can be reduced.

On the other hand, the width of each pattern in the divided pattern portion 200 having a plurality of patterns can be determined so as not to generate a region in which current does not flow in the conductor constituting each pattern. Hereinafter, a method of determining the width of each pattern will be described with reference to the drawings.

Figs. 7 and 8 show the thicknesses at which current can penetrate the inside when the widths of the respective patterns are different. When comparing the patterns of FIGS. 7 and 8 with those of FIG. 5, the patterns of FIGS. 7 and 8 are configured to have a larger width than the height. Thus, when the height is smaller than the width, the skin effect occurs on both sides along the width direction of the conductor. That is, a region through which a current flows and a current flows is formed toward the inside from both sides of the conductor. Therefore, when the width is wider than the height of the conductor, the width of the conductor can be determined according to the thickness of the skin to prevent a region in which no current flows. Hereinafter, it will be described in detail.

As shown in FIG. 7, if the width W of each pattern is determined to be twice or more the skin thickness? Capable of penetrating the current, the region B in which no current flows is generated. However, as shown in FIG. 8, if the width W of each pattern is determined to be twice or less than the skin thickness? Capable of penetrating the current, the region B in which no current flows is not generated. As a result, in the present embodiment, the width W of each pattern is determined so that a region in which current does not flow due to the skin effect does not occur therein. For example, the width W of each pattern is twice or more . ≪ / RTI > The width of each of these patterns can be expressed by the following equation (2).

For example, according to the experiment of the present applicant, the divided pattern portion may have three to eight patterns, and the width of each pattern is determined to be about 0.10 mm to 0.20 mm, and the distance between each pattern is about 0.05 mm to 0.1 mm . If the divided pattern portion has two or less patterns, there is no difference from the conventional single pattern portion. On the contrary, if the divided pattern portion has nine or more patterns, the DC resistive component increases and the efficiency of the wireless power decreases.

On the other hand, the fidelity (Q factor) of the conductor is defined by the following equation (3).

Here, ω is the frequency, L is the inductance of the conductor, and R is the resistance of the conductor. According to the experiment of the present applicant, the resistance, inductance and fidelity of a coil having a single pattern portion and a coil having a divided pattern portion according to the present invention are as shown in Table 1 below.

R (mohm) L (uH) Q Single pattern portion 610 6.20 6.23 Composite pattern portion 739 8.30 7.07

In other words, both the resistance and the inductance component of the coil having the composite pattern portion are increased compared to the resistance and inductance of the coil having a single pattern portion. However, when the fidelity is calculated by the above-mentioned Expression 3, the fidelity of the complex pattern portion is changed from 6.23 to 7.07 Which is approximately 14%. In addition, it has been found that efficiency increases by about 5% to 10% when power is transmitted wirelessly due to such an increase in fidelity.

As a result, the shape of the divided pattern portion, for example, the width and the interval of each pattern in the wireless power antenna 100 according to the present invention can be determined so that the fidelity is higher than that of a single pattern portion.

9) formed on the first pattern unit 130 provided on the upper surface of the insulating sheet 110 and the second divided pattern unit 220 provided on the lower surface of the insulating sheet 110 And a second division pattern portion 220 '(see FIG. 9) formed in the second pattern portion 140. That is, when the wireless power coil 120 is provided on the upper surface and the lower surface of the insulating sheet 110, a divided pattern portion may also be formed on both the upper surface and the lower surface of the insulating sheet 110. In this case, the points where the current flows in the same direction along the respective patterns forming the division pattern portion to reinforce the current and the structure in which the first division pattern portion and the second division pattern portion are connected by the conductive portion are the same as described above, The description is omitted.

On the other hand, Figs. 9 and 10 show various embodiments in which the divided pattern portions are provided on the upper surface and the lower surface of the insulating sheet 110, respectively.

9, the first divided pattern portion 220 provided on the upper surface of the insulating sheet 110 and the second divided pattern portions 220 'provided on the lower surface of the insulating sheet 110 are arranged in the same phase with each other . That is, the respective patterns of the first divided pattern portion 220 are disposed at the same positions with the respective patterns of the second divided pattern portion 220 'and the insulating sheet 110 interposed therebetween.

10, the first divided pattern portion 220 provided on the upper surface of the insulating sheet 110 and the second divided pattern portions 220 'provided on the lower surface of the insulating sheet 110 intersect with each other . That is, each of the patterns of the first divided pattern portion 220 is disposed so as to cross each other with the respective patterns of the second divided pattern portion 220 'sandwiching the insulating sheet 110 therebetween.

On the other hand, mobile devices such as a large number of terminals that have been recently launched are equipped with an NFC module to enable near field communication (NFC) in addition to a wireless charging function. The short-range wireless communication is a proximity communication technique of transmitting and receiving data at a short distance of about 10 cm, for example, using a frequency of 13.56 MHz band. The short-range wireless communication module is installed in a mobile terminal and can be used in various fields such as user authentication, identification card, credit card, mobile ticket, and mobile coupon.

However, in order to perform short-range wireless communication, a short-range wireless communication antenna (coil) is required. The short-range wireless communication antenna includes a short-range wireless communication reader and an antenna of a short-range wireless communication tag. When the short-range wireless communication antenna is implemented on an actual mobile terminal, an integrated dual- An antenna structure is used.

Therefore, in order to simultaneously support the short-range wireless communication function and the wireless power transmission function on a mobile terminal, an antenna for each function must be mounted together. In this case, there is a problem that the size of the mobile terminal is increased due to the limitation of the size of the mobile terminal and the mounting space of the antenna is small. Hereinafter, a dual mode antenna including a short distance wireless communication coil and a wireless power coil will be described in order to solve the above problems.

11 is a block diagram illustrating a configuration of a user terminal having a dual mode antenna 500 according to an embodiment of the present invention.

Referring to FIG. 11, the user terminal includes a short-range wireless communication module 300 for processing short-range wireless communication and a wireless power transmission module 400 for performing a wireless power transmission function. The user terminal may also be a dual mode antenna including a short range wireless communication coil 510 electrically connected to the short range wireless communication module 300 and a wireless power coil 530 electrically connected to the wireless power transmission module 400. [ (500).

The dual mode antenna 500 may be implemented in a double loop shape in which the short range wireless communication coil 510 and the wireless power coil 530 are spaced apart from each other by a predetermined interval. The dual mode antenna 500 may have a structure in which a pattern of the short distance wireless communication coil 510 and the wireless power coil 530 is formed on the insulating sheet. At this time, the short-distance wireless communication coil 510 and the wireless power coil 530 are electrically separated from each other. In addition, the short-range wireless communication coil 510 and the wireless power coil 530 form a double- The impedance matching of the coils can be adjusted by adjusting the interval between the communication coil 510 and the wireless power coil 530.

Specifically, the short-range wireless communication module 300 controls the short-range wireless communication coil 510 to perform short-range wireless communication on the user terminal. For example, the short-range wireless communication module 300 may include a short-range wireless communication impedance matching unit 310, a short-range wireless communication transceiver 370, and a short-range wireless communication controller 320.

When the short range wireless communication function is requested by the user's operation or the operation of the application on the user terminal, the controller 490 of the user terminal activates the short range wireless communication module 300 to activate the short range wireless communication function. The short-range wireless communication impedance matching unit 310 is disposed between the short-range wireless communication coil 510 and the short-range wireless communication transceiver 370, and generates an impedance between the short-range wireless communication coil 510 and the short- Lt; / RTI > The short-range wireless communication transceiver 370 may include a baseband processing unit and a communication protocol processing circuit, a register file, a UART serial interface, and the like. The respective components of the short range wireless communication transceiver 370 correspond to known technologies, and a description thereof will be omitted herein. The short-range wireless communication controller 320 is connected to the short-range wireless communication transceiver 370 to control the overall operation of the short-range wireless communication transceiver 370. In addition, the short-range wireless communication control unit 320 can perform communication with an external host through a separate communication interface.

Meanwhile, the wireless power transmission module 400 may include a wireless power transmission (W / C) impedance matching unit 410, a rectification unit 470, and a charging unit 420.

The wireless power transfer impedance matching unit 410 may be disposed between the wireless power coil 530 and the rectification unit 470 to match the impedance between the wireless power coil 530 and the rectification unit 470. The rectifying unit 470 rectifies the power signal input through the wireless power coil 530 into a half-wave rectified form and rectifies it to DC power. The DC signal rectified by the rectifying section 470 can be removed by a filtering section (not shown), and then converted into a voltage necessary for the operation of the charger 420 or the device. The charging unit 420 charges the external load device or the internal battery using the power converted to the required voltage.

12 and 13 are a rear view and a back cover of a user terminal body to illustrate a case where a dual mode antenna according to an embodiment of the present invention is mounted on a user terminal.

12 and 13, the dual mode antenna 500 may be mounted on the battery cover 1300 of the user terminal. The dual mode antenna 500 may be attached to the inner surface of the battery cover 1300 facing the main body 1000 of the user terminal or integrally coupled to the inside of the battery cover 1300. The connection terminal 1510 for short range wireless communication and the connection terminal for wireless power 1412 of the dual mode antenna 500 are connected to the inner side of the battery cover 1300. In this case, An opening may be formed in the corresponding region so as to be exposed to the outside. At this time, the short-range wireless communication connection terminal 1510 is configured to form a pair of two terminals, and the wireless power connection terminal 1412 can be configured to form a pair of two terminals similarly.

A short range wireless communication module connection terminal 1100 and a wireless power module connection port 1100 are provided on a rear surface of the main body of the user terminal at a position opposite to the short distance wireless communication connection terminal 1510 and the wireless power connection terminal 1412 of the dual mode antenna 500, Terminals 1200 may be respectively formed. Thus, when the battery cover 1300 is coupled to the user terminal 1000, the short-range wireless communication connection terminal 1510 and the wireless power connection terminal 1412 are connected to the short-range wireless communication module connection terminal 1100, And can be electrically connected to the connection terminal 1200. At this time, the short-range wireless communication module connection terminal 1100 or the wireless power module connection terminal 1200 is formed in a C-clip shape and is connected to the short-range wireless communication connection terminal 1510 or the wireless power connection terminal 1412 The connection state can be maintained.

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

Fig. 14 is a front view showing a front view of the dual mode antenna 500, and Fig. 15 is a rear view showing a back surface of the dual mode antenna 500. Fig.

14 and 15, the dual mode antenna 500 includes an insulation sheet 110, a short-range wireless communication coil 510 provided on the insulation sheet 110 to transmit and receive data, and an insulation sheet 110 And a wireless power coil 530 that transmits and receives power wirelessly and has a divided pattern portion including a plurality of patterns spaced apart from each other in a width direction in at least a part of the region.

The insulation sheet 110 and the wireless power coil 530 are very similar to those of the above-described embodiments, and therefore, differences will be mainly described below.

A pair of short-range wireless communication connection terminals 1510 to which both ends of the short-range wireless communication coil 510 are connected may be provided on one side of the insulation sheet 110. The connection terminal 1510 for short-range wireless communication is connected to the short-range wireless communication coil 510 to transmit a signal input through the short-range wireless communication module connection terminal 1100 to the outside or a short- To the communication module (300).

The short-range wireless communication coil 510 may be formed on the top or bottom surface of the insulation sheet 110 and may be disposed on the outer side of the insulation sheet 110 to maximize the diameter of the loop, reduce the number of turns of the loops, As shown in FIG. One end of the short-range wireless communication coil 510 is connected to one of the short-range wireless communication connection terminals 1510. The short-range wireless communication coil 510 forms a loop by rotating the pattern inward, One end of the coil 510 is connected to one of the short-range wireless communication connection terminals 1510 outside the loop through the via 1530. At this time, a connection pattern 1520 connecting the vias 1530 may be provided on the lower surface of the insulating sheet 110.

Meanwhile, the wireless power coil 530 may be formed inside the loop formed by the short-range wireless communication coil 510. In this case, the loop diameter of the wireless power coil 530 is relatively smaller than that of the short distance wireless communication coil 510, and therefore, the wireless power coil 530 is insulated as described above And may be formed on the upper and lower surfaces of the sheet 110 in a laminated structure.

In this case, the pattern of the wireless power coil 530 is different from the above-described embodiment due to the short-distance wireless communication coil 510. [ That is, in this embodiment, the wireless power coil 530 has a first extended pattern 1440 connected to one of the wireless power connection terminals 1412. The first extended pattern 1440 is connected to the second extended pattern 1450 of the lower surface via a via 1430 or the like for separation from the short range wireless communication coil 510. The second extension pattern 1450 extends a predetermined distance and is connected to the first pattern portion 1422 on the upper surface via the via 1432 or the like. The first pattern portion 1422 has a loop shape that converges to the inside and is connected to the second pattern portion 1424 of the lower surface through the conductive portion 1460, The configuration in which the division pattern portion 1424 includes the division pattern portion is similar to the description of the above-described embodiment, and thus a repetitive description thereof will be omitted.

The second pattern portion 1424 on the lower surface of the insulating sheet 110 extends toward the wireless power connection terminal 1412 and passes through the short distance wireless communication coil 510 via the via 1470, Pattern 1480 and is connected to one of the connection terminals 1412 for wireless power.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. You can do it. It is therefore to be understood that the modified embodiments are included in the technical scope of the present invention if they basically include elements of the claims of the present invention.

100 ... Antenna for wireless power 110 ... Insulation sheet
120, 530 ... wireless power coils 112, 114, 1412 ... wireless power connection terminals
300 ... Short range wireless communication module 500 ... Dual mode antenna
510 ... Near field wireless communication coil 1510 ... Near field wireless communication connection terminal
1100 ... short-range wireless communication module connection terminal
1200 ... wireless power module connection terminal

Claims (28)

An antenna for wirelessly transmitting / receiving or relaying power,
Insulating sheet; And
And a wireless power coil having a divided pattern portion including a plurality of patterns spaced apart from each other in the width direction in at least a part of the region and the divided pattern portion being provided on the upper and lower surfaces of the insulating sheet. antenna. The method according to claim 1,
And a pair of wireless power connection terminals to which both ends of the wireless power coil are connected to one surface of the insulating sheet, wherein the division pattern portion is spaced apart from the wireless power connection terminal by a predetermined distance Antenna for wireless power. The method according to claim 1,
Wherein the wireless power coil includes a first pattern portion provided on an upper surface of the insulating sheet and a second pattern portion connected to the first pattern portion and provided on a lower surface of the insulating sheet. . The method of claim 3,
Wherein the division pattern portion includes a first division pattern portion provided in the first pattern portion and a second division pattern portion connected to the first division pattern portion and provided in the second pattern portion. antenna. 5. The method of claim 4,
Wherein a current flowing along the first pattern portion and the second pattern portion flows in a current reinforcing direction. 6. The method of claim 5,
And the currents flowing along the first pattern portion and the second pattern portion flow in the same direction. 5. The method of claim 4,
Wherein each of the patterns forming the first divided pattern portion and the second divided pattern portion is disposed in the same phase with respect to the insulating sheet. 5. The method of claim 4,
Wherein each of the patterns forming the first divided pattern portion and the second divided pattern portion is disposed so as to intersect with each other with respect to the insulating sheet. The method according to claim 1,
Wherein each of the patterns is spaced apart from each other at equal intervals. The method according to claim 1,
Wherein the patterns have the same width. Insulating sheet;
A short range wireless communication coil provided on the insulating sheet to transmit and receive data; And
And a wireless power coil provided in the insulating sheet for transmitting and receiving power wirelessly and having a divided pattern portion including a plurality of patterns spaced apart from each other in a width direction in at least a part of the region, . 12. The method of claim 11,
And a pair of wireless power connection terminals to which both ends of the wireless power coil are connected to one surface of the insulating sheet, wherein the division pattern portion is spaced apart from the wireless power connection terminal by a predetermined distance Antenna for wireless power. 12. The method of claim 11,
Wherein the split pattern portion is provided on both upper and lower surfaces of the insulating sheet. 14. The method of claim 13,
Wherein the dividing pattern portion includes a first dividing pattern portion provided on an upper surface of the insulating sheet and a second dividing pattern portion provided on a lower surface of the insulating sheet in conduction with the first dividing pattern portion. 15. The method of claim 14,
And the currents flowing along the first divided pattern portion and the second divided pattern portion flow in the same direction. 15. The method of claim 14,
Wherein the first division pattern portion and the second division pattern portion are arranged in the same phase with respect to the insulating sheet. 15. The method of claim 14,
Wherein each of the patterns forming the first divided pattern divided sub-divided pattern portion and the second divided pattern portion is arranged to cross each other with respect to the insulating sheet. 12. The method of claim 11,
Wherein the patterns are spaced equidistantly from one another and have the same width. An antenna for wirelessly transmitting / receiving or relaying power,
Insulating sheet; And
And a division pattern portion provided on the insulation sheet and including a plurality of patterns spaced apart from each other in a width direction,
And the fidelity (Q factor) of the divided pattern portion is set to be equal to or greater than a fidelity (Q factor) of a single pattern portion. 20. The method of claim 19,
Wherein the divided pattern portions are provided on both upper and lower surfaces of the insulating sheet and are energized with each other. 21. The method of claim 20,
Wherein electric currents flowing in the divided pattern portions provided on the upper surface and the lower surface of the insulating sheet flow in the same direction. 20. The method of claim 19,
Wherein the patterns are spaced at equal intervals from one another and have the same width. An antenna for wirelessly transmitting / receiving or relaying power,
Insulating sheet; And
And a division pattern portion provided on the insulation sheet and including a plurality of patterns spaced apart from each other in a width direction,
Wherein a width of each of the patterns constituting the divided pattern portion is determined so as not to generate a region in which current does not flow in each of the patterns. 24. The method of claim 23,
Wherein a width of each of the patterns constituting the divided pattern portion is determined to be twice or less than a thickness of a skin to which a current can penetrate. 25. The method of claim 24,
Wherein an interval between the respective patterns constituting the divided pattern portions is constant. 26. The method of claim 25,
Wherein the divided pattern portion has three or more and eight or less patterns, and the width of each pattern is determined to be 0.10 mm or more and 0.20 mm or less, and the distance between each pattern is 0.05 mm or more and 0.1 mm or less. Antenna. 24. The method of claim 23,
Wherein the divided pattern portions are provided on both upper and lower surfaces of the insulating sheet and are energized with each other. 28. The method of claim 27,
Wherein electric currents flowing in the divided pattern portions provided on the upper surface and the lower surface of the insulating sheet flow in the same direction.

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