KR20180005923A - Magnetic material antenna apparatus and electronic device using metallic border - Google Patents

Abstract

An electronic device having a magnetic material antenna device according to an embodiment of the present invention includes a circuit chip having a first terminal and a second terminal for supplying a current for transmitting and receiving a magnetic field signal; a first magnetic material antenna having a first terminal and a second terminal connected to the first terminal of the circuit chip; and a first metal rim which is included in the metal rim of the electronic device, has a first connection point and a second connection point connected in parallel to the second terminal of the first magnetic material antenna and a third connection point connected to the second terminal of the circuit chip. The third connection point of the first metal rim is located between the first connection point and the second connection point. The magnetic field generated by the magnetic material antenna can be maintained at a certain level or more.

Description

TECHNICAL FIELD [0001] The present invention relates to a magnetic material antenna device and an electronic device using a metal frame,

The present invention relates to a magnetic body antenna device and an electronic device using a metal frame.

Recently, the popularity of metal design is gradually increasing in electronic devices such as smart phones. Such metal designs are attracting attention in terms of external design and internal robustness of electronic devices.

A metal frame can be used in the exterior design aspect of the electronic device, and a metal frame can be embedded in the interior of the electronic device for the inner solidity of the electronic device.

For example, in some portable electronic device manufacturers using metal designs, research and development is under way to use these metal borders as part of the antenna.

In an electronic device having a conventional antenna using a metal frame, in order to use the metal frame as a part of the antenna, a gap is formed in which a metal part of the metal frame exposed to the outside is removed, The rim may be used as part of the antenna.

On the other hand, as one of the measures for extending the recognition range of an NFC (Near Field Communication) antenna, a metal frame can be used.

When the metal frame is used for extending the recognition range of the NFC antenna, the magnetic field generated by the NFC antenna is weakened while the magnetic field is formed by the metal frame connected to the NFC antenna.

The following prior art documents do not disclose a solution to the above-mentioned conventional technical problem.

Korean Patent Publication No. 2014-0119928

An embodiment of the present invention provides a magnetic body antenna device and an electronic device in which a magnetic field generated by a magnetic body antenna can be maintained at a predetermined level or higher while a magnetic field is formed by a metal rim.

According to an embodiment of the present invention, there is provided a circuit chip having a first terminal and a second terminal for supplying a current for transmitting and receiving a magnetic field signal; A first magnetic body antenna having a first terminal and a second terminal connected to a first terminal of the circuit chip; And a first connection point and a second connection point included in a metal rim of the electronic device and connected in parallel to a second terminal of the first magnetic body antenna and a third connection point connected to a second terminal of the circuit chip, Metal border; And a third connection point of the first metal rim is located between the first connection point and the second connection point.

In the solution of this task, one of several concepts described in the following detailed description is provided. The subject matter of the present invention is not intended to identify the core or essential technology of the claimed subject matter, but merely one of the claimed subject matter is described, each of which is specifically set forth in the following detailed description.

According to an embodiment of the present invention, the first magnetic field by the first magnetic body antenna and the second magnetic field by the first metal frame are formed in different directions, so that the recognition range of the magnetic body antenna can be widened.

The second magnetic field generated at the first metal frame by the first current and the second current is limited as the current value becomes a relatively small value due to the current distribution, and accordingly, the first magnetic field flowing through the first metal frame The first magnetic field generated while the main current having a larger current value than the current or the second current flows through the magnetic body antenna can be maintained at a certain level.

1 is an external perspective view of an electronic device according to an embodiment of the present invention.
2 is a view illustrating an example of a magnetic body antenna device according to an embodiment of the present invention.
3 is a modification of the magnetic antenna apparatus of FIG.
4 is an example of an electronic device having a magnetic body antenna device according to an embodiment of the present invention.
5 is a modification of the electronic device of Fig.
6 is an example of an electronic device having a magnetic body antenna device according to an embodiment of the present invention.
7 is a modification of the electronic device of Fig.
8 is a view illustrating an example of a first magnetic body antenna according to an embodiment of the present invention.
9 is a view illustrating an example of a first magnetic body antenna according to an embodiment of the present invention.
10 is a current path explanatory diagram of a magnetic body antenna device according to an embodiment of the present invention.
11 is a view for explaining a magnetic field formed by a magnetic body antenna device according to an embodiment of the present invention.
12 is an example of an electronic device having a magnetic body antenna device according to an embodiment of the present invention.

It should be understood that the present invention is not limited to the embodiments described and that various changes may be made without departing from the spirit and scope of the present invention.

In addition, in each embodiment of the present invention, the structure, shape, and numerical values described as an example are merely examples for helping understanding of the technical matters of the present invention, so that the spirit and scope of the present invention are not limited thereto. It should be understood that various changes may be made without departing from the spirit of the invention. The embodiments of the present invention may be combined with one another to form various new embodiments.

In the drawings referred to in the present invention, components having substantially the same configuration and function as those of the present invention will be denoted by the same reference numerals.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

1 is an external perspective view of an electronic device according to an embodiment of the present invention.

Referring to FIG. 1, an electronic device 10 according to an embodiment of the present invention includes a metal frame 100 disposed along a side of the electronic device 10, And a display 200 for displaying an image.

The metal frame 100 may include a metal disposed on the upper side, the lower side, the left side, and the right side of the electronic device 10, respectively.

As shown in FIG. 1, the metal frame 100 may be a metal that is integrally connected to each other. Alternatively, the metal frame 100 may include at least one gap (for example, a non-conductor region) At least one metal may be used.

Here, the metal frame 100 is not limited to a metal frame, but may be a frame including a metal material.

The electronic device 10 according to one embodiment of the present invention may be a portable computer such as a portable tablet computer, a mobile phone, a mobile phone having a media player function, a handheld computer, a remote control, a game player, a global positioning system , A combination of such devices, or any other suitable portable electronic device, and is not particularly limited as long as it is an apparatus in which a magnetic body antenna can be employed.

2 is a view illustrating an example of a magnetic body antenna device according to an embodiment of the present invention.

Referring to FIG. 2, the magnetic antenna apparatus according to an embodiment of the present invention may include a first magnetic body antenna 410 and a first metal frame 110.

Each of the first magnetic body antenna 410 and the first metal frame 110 will be described in detail below.

3 is a modification of the magnetic antenna apparatus of FIG.

2 and 3, the first metal rim 110 is electrically separated from other metal rims of the electronic device by a first gap G11 and a second gap G12 made of a non-conductive material .

3, two first gaps G11 and a second gap G12 are illustrated, but any one of the first gap G11 and the second gap G12 may be formed on the first metal rim 110 And it can be applied to each embodiment of the present invention.

Each of the first gap G11 and the second gap G12 is described in detail below.

4 is an example of an electronic device having a magnetic body antenna device according to an embodiment of the present invention.

Referring to FIG. 4, an electronic device 10 according to an embodiment of the present invention may include a circuit chip 300, a first magnetic body antenna 410, and a first metal frame 110.

The circuit chip 300 includes a first terminal T11 and a second terminal T12 for supplying a main current Im for transmitting and receiving a magnetic field signal and the first terminal T11 and the second terminal T12, The main current Im for transmitting and receiving a magnetic field signal to the first magnetic body antenna 410 through the second magnetic field antenna T12.

In one example, the circuit chip 300 may include input and output circuits for input and output of data, storage and processing circuitry for storage and processing of data, and wireless communication circuitry including a short range communication section and a cellular telephone communication section .

The circuit chip 300 may perform wireless communication using the first magnetic body antenna 410 and the first metal frame 110.

The input / output circuit may be used to input data to the electronic device 10 or to output data to an external device of the electronic device 10. [

Output circuitry may include input and output devices such as touch screens and other user input interfaces and may further include user input and output devices such as buttons, joysticks, click wheels, scrolling wheels, touch pads, keypads, keyboards, . Such a user input device may be provided with an external input command for controlling the operation of the electronic device 10. [

The input / output device may also include display and audio devices such as display and other components that present visual information and status data. In one example, the display and audio device may further include audio equipment such as a speaker and other devices for generating sound.

And, the input / output device may include audio-video interface equipment such as jacks and other connectors for external headphones and monitors.

The storage and processing circuitry may be implemented as a hard disk drive storage, a non-volatile memory (e.g., flash memory or read-only memory), a volatile memory (e.g., )), And the like. The storage and processing circuitry can be used to control the operation of the electronic device 10.

The storage and processing circuitry may include, for example, at least one of a microprocessor, a microcontroller, a digital signal processor, and applications specific integrated circuits (ASICs). The storage and processing circuitry may be used in the electronic device 10 to execute software such as an Internet browsing application, a voice-over-internet-protocol (VoIP) phone call application, an email application, a media playback application, an operating system function, Also, in order to support interaction with external equipment, the storage and processing circuitry may be used in the implementation of communication protocols.

Here, the communication protocol that can be implemented using the storage and processing circuitry may include a communication protocol that uses proximity communication using a magnetic field, such as an NFC protocol.

The wireless communication circuit may also include a radio frequency (RF) transceiver circuit formed from one or more integrated circuits, a power amplifier circuit, a low noise input amplifier, a passive RF component, and other circuitry for handling RF radio signals.

The wireless communication circuit may also include a radio frequency transceiver circuit for handling a plurality of radio frequency communication bands.

Next, a description will be given with reference to Figs. 1 to 4. Fig.

The first magnetic body antenna 410 includes a first terminal T21 connected to the first terminal T11 of the circuit chip 300 of FIG. 4, a second terminal T21 connected to the first metal frame 110, (T22).

At this time, the first magnetic body antenna 410 transmits the main current Im supplied from the circuit chip 300 (FIG. 4) to the first connection point P31 of the first metal frame 110 and the second connection point P32 ), Respectively.

For example, the first magnetic body antenna 410 receives the main current Im from the circuit chip 300 (FIG. 4) through the first terminal T21 of the first magnetic body antenna 410, The main current Im is supplied to the first and second connection points P31 and P32 of the first metal frame 110 through the second terminal T22 of the one magnetic body antenna 410 as the first current I1 and 2 < / RTI > current (I2).

In this case, the first magnetic-field antenna 410 may form a first magnetic field by the main current Im in an outer direction on the opposite side of the display 200 (FIG. 4) of the electronic device 10.

The first metal frame 110 includes a first connection point P31 included in the metal frame 100 of the electronic device 10 and connected in parallel to a second terminal T22 of the first magnetic- And a third connection point P33 including a second connection point P32 and connected to a second terminal T12 of the circuit chip 300 of FIG.

Here, the third connection point P33 of the first metal frame 110 is located between the first connection point P31 and the second connection point P32.

For example, the first metal frame 110 may provide the first current I1 provided through the first connection point P31 to the circuit chip 300 (FIG. 4) via the third connection point P33 And the first metal frame 110 may provide the second current I2 provided through the second connection point P32 to the circuit chip 300 of FIG. 4 through the third connection point P33 .

In this case, the first metal rim 110 provides the current path PH1 of the first current I1 from the first connection point P31 to the third connection point P33, and the first metal rim 110 110 provides the current path PH2 of the second current I2 from the second connection point P32 to the third connection point P33.

Accordingly, the first metal frame 110 may form a second magnetic field by the first current and the second current.

When a current having the same current value flows through the first magnetic body antenna 410 and the first metal frame 110, the first metal frame 110 has a larger volume than the first magnetic body antenna 410 The magnetic field by the first metal frame is strengthened and the magnetic field by the first magnetic body antenna 410 can be relatively weakened.

In order to solve this problem, in one embodiment of the present invention, the current value flowing through the first magnetic body antenna 410 and the current flowing through the first metal frame 110 are different from each other.

The first current I1 and the second current I2 provided to the first connection point P31 and the second connection point P32 of the first metal frame 110 are connected to the first magnetic antenna 410 The main current Im may be smaller than the main current Im supplied to the first magnetic body antenna 410 from the circuit chip 300 of FIG.

The first current and the second current provided to the first connection point P31 and the second connection point P32 of the first metal frame 110 are connected to the circuit chip via the third connection point P33, 4 of 300).

The length of each of the current paths PH1 and PH2 from the first connection point P31 and the second connection point P32 to the third connection point P33 of the first metal frame 110 may be set to a length Is shorter than the length of the current path (PH1 + PH2) from the first connection point (P31) to the second connection point (P32) of the metal frame (110).

5 is a modification of the electronic device of Fig.

4 and 5, the first metal rim 110 is electrically separated from other metal rims of the electronic device by a first gap G11 and a second gap G12 made of a non-conductive material .

Referring to FIGS. 3 and 5, the first gap G11 and the second gap G12 may be non-space made of air, or may be non-conductive members made of a non-conductive material.

In FIGS. 3 and 5, two first gaps G11 and a second gap G12 are shown, but this is only an example, so the present invention is not limited thereto.

6 is a second exemplary view of an electronic device having a magnetic body antenna according to an embodiment of the present invention.

6, an electronic device 10 according to an embodiment of the present invention includes a circuit chip 300, a first magnetic body antenna 410, a first metal frame 110 and a second magnetic body antenna 420, . ≪ / RTI >

Among the descriptions of the circuit chip 300, the first magnetic body antenna 410, the first metal frame 110 and the second magnetic body antenna 420 shown in FIG. 6, The redundant explanation may be omitted.

The first metal rim 110 includes a first connection point P31 and a second connection point P31 which are included in a metal rim of the electronic device and are connected in parallel to a second terminal T22 of the first magnetic- And a third connection point P33 which is located between the first connection point P31 and the second connection point P32 and is connected to the second magnetic body antenna 420. [

For example, the first metal rim 110 may provide the first current I1 provided through the first connection point P31 to the second magnetic body antenna 420 through the third connection point P33 The first metal frame 110 may provide the second current I2 provided through the second connection point P32 to the second magnetic body antenna 420 through the third connection point P33 .

In this case, the first metal frame 110 may form a second magnetic field by the first current I1 and the second current I2.

The second magnetic body antenna 420 includes a first terminal T41 connected to the third connection point P33 of the first metal frame 110 and a second terminal T41 connected to the first terminal T11 of the circuit chip 300. [ And a second terminal T42 connected thereto.

For example, the second magnetic body antenna 420 may receive the first current I1 and the second current I2 from the first metal frame 110 and provide the first current I1 and the second current I2 to the circuit chip 300.

4) of the electronic device 10 in the outward direction from the opposite side of the display (200 in FIG. 4), similarly to the operation of the first magnetic body antenna 410. In this case, It is possible to form the first magnetic field by the current I1 and the second current I2.

4, the first current I1 and the second current I2 provided to the first connection point P31 and the second connection point P32 of the first metal frame 110 are the same as the first current I1 and the second current I2 provided to the first connection point P31 and the second connection point P32 of the first metal frame 110, A current smaller than a main current Im provided to the first magnetic body antenna 410 from the circuit chip 300 as a current to which the main current Im is distributed through the first magnetic body antenna 410, Value. ≪ / RTI >

The first current I1 and the second current I2 provided to the first connection point P31 and the second connection point P32 of the first metal frame 110 are connected to the third connection point P33 And the second magnetic body antenna 420 may provide the first current I1 and the second current I2 to the circuit chip 300 through the second magnetic body antenna 420. [

The length of each of the current paths PH1 and PH2 from the first connection point P31 and the second connection point P32 to the third connection point P33 of the first metal frame 110 may be set to a length Is shorter than the length of the current path (PH1 + PH2) from the first connection point (P31) to the second connection point (P32) of the metal frame (110).

7 is a modification of the electronic device of Fig.

6 and 7, the first metal rim 110 is electrically separated from other metal rims of the electronic device by a first gap G11 and a second gap G12 made of a non-conductive material . Here, the first gap G11 and the second gap G12 may be a non-space made of air, or may be a non-conductive member made of a non-conductive material.

In FIG. 7, two first gaps G11 and a second gap G12 are shown, but this is only one example, so the present invention is not limited thereto.

FIG. 8 is a view showing an example of a first magnetic body antenna according to an embodiment of the present invention, and FIG. 9 is an example of a first magnetic body antenna according to an embodiment of the present invention.

8 and 9, the first magnetic body antenna 410 may include at least one of a chip type antenna (FIG. 8) and a loop type antenna (FIG. 9).

The second magnetic body antenna 420 may include at least one of a chip type antenna (FIG. 8) and a loop type antenna (FIG. 9).

Here, since the first magnetic body antenna 410 and the second magnetic body antenna 420 are applicable to any antenna that forms a magnetic field, the present invention is not limited to the antennas shown in FIGS. 8 and 9.

10 is a current path explanatory diagram of a magnetic body antenna device according to an embodiment of the present invention. 4 and 10, a current path in the magnetic antenna apparatus according to an embodiment of the present invention will be described.

First, the main current Im may be provided from the circuit chip 300 to the first magnetic body antenna 410 through the first terminal T11.

The first magnetic body antenna 410 generates a first magnetic field by the main current Im and outputs a main current Im from the circuit chip 300 to the first current I1 and the second current I2 I2) to provide the first connection point (P31) and the second connection point (P32) of the first metal frame (110).

The first current I1 provided through the first connection point P31 of the first metal rim 110 is connected to the third connection point P31 of the first metal rim 110 by the third connection point P31, And flows to the second terminal T12 of the circuit chip 300 through the third connection point P33. Alternatively, the first current I1 may flow in a direction opposite to the above-described direction.

The second current I2 provided through the second connection point P32 of the first metal rim 110 is connected to the third connection point P33 at the second connection point P32 of the first metal rim 110, And flows to the second terminal T12 of the circuit chip 300 via the third connection point P33. Alternatively, the second current I2 may flow in a direction opposite to the above-described direction.

11 is a view for explaining a magnetic field formed by a magnetic body antenna device according to an embodiment of the present invention.

10 and 11, the first magnetic field generated by the first magnetic body antenna 410 is transmitted to the outside of the first magnetic body antenna 410 at a position where the first magnetic body antenna 410 is disposed, (For example, the back side of the electronic device) of the electronic device 200. The electronic device 10 uses the first magnetic body antenna 410 to generate the first magnetic field by the main current Im in the outer direction perpendicular to the back surface of the electronic device 10 ) Can be formed.

The second magnetic field generated by the first metal rim 110 is radially outward at a position where the first metal rim 110 of the electronic device 10 is disposed, for example, at one end of the electronic device 10 May be formed in an outward direction. 10) and the second current (I2 in FIG. 10) to one side of the electronic device 10 using the first metal frame 110 (See the second magnetic field direction in Fig. 11) at the end portion.

As described above, since the first magnetic field generated by the first magnetic body antenna 410 and the second magnetic field generated by the first metal rim 110 can be formed in different positions and directions, the recognition range of the magnetic body antenna can be extended have.

Since the first current I1 and the second current I2 flowing through the first metal frame 110 are the currents through which the main current Im having passed through the first magnetic body antenna 410 is distributed, The second magnetic field generated in the first metal frame 110 by the first current I1 and the second current I2 is relatively limited and the main magnetic field generated by the main current Im is relatively limited, The first magnetic field generated by the first magnetic body antenna 410 can be maintained at a relatively constant level by the current Im.

Table 1 below shows strengths of the first magnetic field and the second magnetic field with respect to the first magnetic field and the second magnetic field by the conventional method according to an embodiment of the present invention.

Antenna type 1st magnetic field strength
Field strength (A / m) Second magnetic field strength
Field strength (A / m) (Conventional method)
The first magnetic-
1st meta-borders series connection -36.214 (dB) -15.214 (dB) (One embodiment of the present invention)
The first magnetic-
First meta-edge parallel connection -14.637 (dB) -15.666 (dB)

Referring to Table 1, it can be seen that the intensity of the second magnetic field of each of the embodiment and the conventional method of the present invention is similar to that of the conventional method, and the intensity of the first magnetic field Is stronger than the intensity of the first magnetic field of the conventional method.

12 is an example of an electronic device having a magnetic body antenna device according to an embodiment of the present invention.

Referring to FIG. 12, an electronic device having a magnetic body antenna device according to an embodiment of the present invention may include a circuit chip 300, a first magnetic body antenna 410, and a first metal frame 110.

Among the descriptions of the circuit chip 300, the first magnetic body antenna 410, and the first metal frame 110 shown in FIG. 12, the same elements as those described with reference to FIG. 4 are not described in detail. .

In particular, the electronic device shown in Fig. 12 further includes at least one impedance network in addition to the configuration of the electronic device shown in Fig.

For example, the electronic device includes an impedance network (IN) connected between the circuit chip 300 and the first magnetic body antenna 410.

The electronic device includes an impedance network (IN) connected between the circuit chip (300) and the first metal frame (110).

The node between the first magnetic body antenna 410 and the first metal frame 110 is referred to as a distribution node DN. (IN) connected between the distribution node (DN) and the first metal frame (110), and an impedance network (IN) connected between the distribution node (DN)

Here, the impedance network IN may include at least one impedance element or circuit capable of determining an impedance.

In the case of further including the impedance network IN as described above, it is possible to adjust the communication frequency characteristic by providing a predetermined impedance or varying the impedance by using the impedance network IN.

10: electronic device
100: metal border
110: 1st metal border
200: Display
300: Circuit chip
410: first magnetic substance antenna
420: second magnetic substance antenna

Claims (14)

A circuit chip having a first terminal and a second terminal for supplying a current for sending and receiving a magnetic field signal;
A first magnetic body antenna having a first terminal and a second terminal connected to a first terminal of the circuit chip; And
A first metal wire having a first connection point and a second connection point included in a metal frame of the electronic device and connected in parallel to a second terminal of the first magnetic body antenna and a third connection point connected to a second terminal of the circuit chip, edge; Lt; / RTI >
And a third connection point of the first metal rim is located between the first connection point and the second connection point.
2. The method of claim 1, wherein the first metal rim
And electrically separated from the other metal rim of the electronic device by a first gap and a second gap of non-conductive material.
The antenna according to claim 1, wherein the first magnetic body antenna
And distributes a current provided from the circuit chip to each of a first connection point and a second connection point of the first metal frame.
The method of claim 1, wherein each of the currents provided to the first connection point and the second connection point of the first metal rim
The current distributed through the first magnetic body antenna has a current value smaller than a current supplied from the circuit chip to the first magnetic body antenna.
The method of claim 1, wherein each of the currents provided to the first connection point and the second connection point of the first metal rim
And flows to the circuit chip through the third connection point.
The method as claimed in claim 1, wherein the length of the current path from each of the first connection point and the second connection point to the third connection point of the first metal frame is
The length of the current path from the first connection point to the second connection point of the first metal rim is shorter than the length of the current path from the first connection point to the second connection point of the first metal rim.
The antenna according to claim 1, further comprising: a second magnetic body antenna having a first terminal connected to a third connection point of the first metal rim and a second terminal connected to a first terminal of the circuit chip; Lt; / RTI >
8. The antenna according to claim 7, wherein each of the first and second magnetic substance antennas
An electronic device comprising at least one of a chip-type antenna and a loop-type antenna.
A first magnetic antenna having a first terminal and a second terminal connected to a first terminal of a circuit chip having a first terminal and a second terminal for supplying a current for transmitting and receiving a magnetic field signal; And
A first connection point and a second connection point which are connected in parallel to the second terminal of the first magnetic body antenna and a third connection point which is located between the first connection point and the second connection point, A first metal rim having a first metal rim; Lt; / RTI >
And the third connection point of the first metal rim is located between the first connection point and the second connection point.
10. The method of claim 9, wherein the first metal rim
And electrically separated from other metal rims of the electronic device by a first gap and a second gap made of a non-conductor material.
10. The antenna according to claim 9, wherein the first magnetic body antenna
And distributes a current provided from the circuit chip to each of a first connection point and a second connection point of the first metal frame.
10. The method of claim 9, wherein each of the currents provided to the first connection point and the second connection point of the first metal rim
And a current value distributed through the first magnetic body antenna and having a current value smaller than a current supplied from the circuit chip to the first magnetic body antenna.
10. The method of claim 9, wherein each of the currents provided to the first connection point and the second connection point of the first metal rim
And flows to the circuit chip through the third connection point.
The method as claimed in claim 9, wherein the length of the current path from each of the first connection point and the second connection point to the third connection point of the first metal frame is
Wherein the length of the current path from the first connection point to the second connection point of the first metal rim is shorter than the length of the current path from the first connection point to the second connection point of the first metal rim.

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