KR101691741B1 - Antenna device - Google Patents

Antenna device Download PDF

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Publication number
KR101691741B1
KR101691741B1 KR1020150093391A KR20150093391A KR101691741B1 KR 101691741 B1 KR101691741 B1 KR 101691741B1 KR 1020150093391 A KR1020150093391 A KR 1020150093391A KR 20150093391 A KR20150093391 A KR 20150093391A KR 101691741 B1 KR101691741 B1 KR 101691741B1
Authority
KR
South Korea
Prior art keywords
short
range wireless
mobile terminal
frame structure
conductive frame
Prior art date
Application number
KR1020150093391A
Other languages
Korean (ko)
Inventor
성원모
김영태
황이슬
김남일
이경호
Original Assignee
주식회사 이엠따블유
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 이엠따블유 filed Critical 주식회사 이엠따블유
Priority to KR1020150093391A priority Critical patent/KR101691741B1/en
Priority to PCT/KR2016/006088 priority patent/WO2017003108A1/en
Application granted granted Critical
Publication of KR101691741B1 publication Critical patent/KR101691741B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H01Q1/46—Electric supply lines or communication lines

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  • Support Of Aerials (AREA)
  • Telephone Set Structure (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)

Abstract

An antenna device is disclosed. An antenna device according to an exemplary embodiment includes an antenna structure mounted on a mobile terminal, the antenna structure including a conductive structure provided in a mobile terminal and a short-range wireless communication antenna portion disposed adjacent to the conductive structure, the antenna portion being spaced apart from the conductive structure, The coupling is fed through the short-range wireless communication antenna.

Description

ANTENNA DEVICE,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication technology, and more particularly to an antenna device.

In general, an NFC (Near Field Communication) antenna is attached to a battery in a mobile terminal or attached to a rear case. At this time, the NFC antenna is positioned at the central portion of the back side of the mobile terminal. Therefore, when the user grasps the mobile terminal, the NFC antenna is covered by the user's hand, or the distance from the reader is distant, resulting in a lower recognition rate. In addition, there is a problem that it is inconvenient for a user to use an application (for example, a fingerprint recognition application) and an NFC function at the same time because of the position of the NFC antenna. In addition, since the conventional NFC antenna is used only for the NFC antenna, the radiation characteristic of the NFC antenna is limited.

Korean Registered Patent No. 10-1339018 (December, 2013)

An embodiment of the present invention is to provide an antenna device capable of improving the radiation characteristic of short-range wireless communication.

An embodiment of the present invention is to provide an antenna device capable of improving the recognition rate of short-range wireless communication.

An antenna device according to an exemplary embodiment is an antenna device mounted on a mobile terminal, comprising: a conductive structure provided on the mobile terminal; And a short-range wireless communication antenna unit adjacent to the conductive structure, the short-range wireless communication antenna unit being spaced apart from the conductive structure, wherein the conductive structure is coupled through the short-range wireless communication antenna unit.

The conductive structure may be a conductive rim structure along the rim of the mobile terminal.

The conductive frame structure may be divided into a plurality of sections, and the antenna device may further include a tuning section formed on a segmented portion of the conductive frame structure.

The tuning unit may be arranged such that a frequency band of the conductive frame structure corresponds to a frequency band of the short-range wireless communication antenna unit.

The short-range wireless communication antenna unit may be spaced apart from the segmented portion of the conductive frame structure.

An antenna device according to an exemplary embodiment is an antenna device mounted on a mobile terminal, the antenna device being provided in the mobile terminal and being divided into a plurality of parts, at least one part of the plurality of parts supplying current A conductive structure used as an antenna; And a short range wireless communication antenna unit adjacent to another part of the plurality of parts but spaced apart from the other part, wherein the other part is fed through a coupling via the short range wireless communication antenna unit.

The conductive structure may be a conductive rim structure along the rim of the mobile terminal.

The antenna device may further include a tuning part formed in the segmented part of the other part.

The tuning unit may be arranged such that a frequency band of the other part corresponds to a frequency band of the short-range wireless communication antenna unit.

The short-range wireless communication antenna unit may be spaced apart from the segmented portion of the other part.

According to the exemplary embodiment, the short-range wireless antenna unit is disposed adjacent to the conductive frame structure, and the coupling between the short-range wireless antenna unit and the conductive frame structure is generated, thereby improving the radiation characteristic of the short- . In addition, since the near-field wireless function can be used in the edge portion of the mobile terminal, even if the user grasps the mobile terminal, the influence of the user's hand can be reduced and the recognition rate of the near-field wireless function can be improved. In addition, it is possible to control the radiation concentration area through the tuning position change according to the design of the mobile terminal.

1 illustrates a mobile terminal according to an exemplary embodiment;
2 illustrates a mobile terminal according to another exemplary embodiment;

Hereinafter, embodiments of an antenna apparatus and a mobile terminal including the antenna apparatus of the present invention will be described in detail with reference to FIGS. 1 and 2. FIG. However, this is an exemplary embodiment only and the present invention is not limited thereto.

In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The technical idea of the present invention is determined by the claims, and the following embodiments are merely a means for effectively explaining the technical idea of the present invention to a person having ordinary skill in the art to which the present invention belongs.

1 is a diagram of a mobile terminal according to an exemplary embodiment.

Referring to FIG. 1, the mobile terminal 100 may include a conductive frame structure 102, a short-range wireless antenna unit 104, and a tuning unit 106. The mobile terminal 100 may be a smart phone, a mobile phone, a tablet computer, a notebook, a netbook, a PDA, a PMP, an MP3 player, a navigation device, a smart camera, And may include various types of mobile communication devices.

The conductive frame structure 102 may be provided along the rim of the frame case (not shown) of the mobile terminal 100. The conductive frame structure 102 may serve to enhance the appearance of the mobile terminal 100. The conductive rim structure 102 may be made of an electrically conductive material such as, for example, a metal. At least one of the conductive frame structures 102 may be segmented. That is, the conductive frame structure 102 may include the segment 102a.

The short-range wireless antenna unit 104 is an antenna for short-range wireless communication. For example, the short-range wireless antenna unit 104 can transmit and receive signals in the 13.56 MHz band, but the frequency band of the short-range wireless antenna unit 104 is not limited thereto. The short-range wireless antenna unit 104 may include a radiation unit 111, a feed pad 113, and a ground pad 115. The radiation part 111 may be formed on the base member 117. The radiation part 111 may be formed on the base member 117 in a loop shape or a spiral shape, but is not limited thereto. The base member 117 may be, for example, an FPCB (Flexible Printed Circuit Board) or a film, but is not limited thereto. The base member 117 may be provided with an electromagnetic wave shielding sheet for shielding electromagnetic waves generated from the radiation unit 111. The power feeding pad 113 is a portion receiving current from the mobile terminal 100. The ground pad 113 is electrically connected to the ground of the mobile terminal 100.

The short-range wireless antenna unit 104 may be provided adjacent to the conductive frame structure 102 within the mobile terminal 100. At this time, the short-range wireless antenna unit 104 may be spaced apart from the conductive frame structure 102. In an exemplary embodiment, the short-range wireless antenna portion 104 may be provided adjacent to the conductive frame structure 102 to couple with the conductive frame structure 102. Here, although the short-range wireless antenna unit 104 is shown as being provided adjacent to the conductive frame structure 102 on the lower side of the mobile terminal 100, the present invention is not limited thereto. Place.

According to the exemplary embodiment, the short-range wireless antenna portion 104 and the conductive frame structure 102 are coupled to each other so that the conductive frame structure 102 is used for short-range wireless communication together with the short-range wireless antenna portion 104. That is, the conductive frame structure 102 is coupled to the short-range wireless antenna unit 104 to be used as a short-range wireless antenna. Therefore, it is possible to obtain the effect that the radiation characteristic of the short-range wireless antenna unit 104 is expanded by the conductive frame structure 102.

In the case of the conductive frame structure 102, since the radiation is strongly displayed in the open section (that is, the segment section 102a), the short-circuited radio antenna section 104 and the segmented section are arranged symmetrically to maximize the radiation area . That is, the short-range wireless antenna unit 104 may be provided in the segment 102a of the conductive frame structure 102 on the basis of the center of the mobile terminal 100 (for example, the vertical center or the lateral center of the mobile terminal 100) As shown in FIG.

The tuning portion 106 may be formed in the segmented portion 102a of the conductive frame structure 102. [ The tuning portion 106 may be provided to electrically connect the segmented portion 102a of the conductive frame structure 102. [ In the exemplary embodiment, the first connection pad 108-1 and the second connection pad 108-2 are connected to both ends of the conductive frame structure 102 (i.e., the end portion between the segment portions 102a) . The first connection pad 108-1 and the second connection pad 108-2 may be provided inside the mobile terminal 100. [ The tuning section 106 may be provided by connecting the first connection pad 108-1 and the second connection pad 108-2.

The tuning unit 106 serves to match the frequency band of the conductive frame structure 102 with the frequency band of the short-range wireless antenna unit 104. That is, in order for the conductive frame structure 102 to operate as a short-range wireless antenna, the frequency band of the conductive frame structure 102 should be the same as or similar to the frequency band of the short-range wireless antenna unit 104. It is difficult to satisfy the frequency band of the short-range wireless antenna unit 104 only by the physical length of the conductive frame structure 102. Therefore, the frequency band of the conductive frame structure 102 is transmitted through the tuning unit 106 to the short- 104). ≪ / RTI > The tuning section 106 may be formed of a combination of an inductor or a capacitor or an inductor and a capacitor according to the length of the conductive frame structure 102.

As described above, the short-range wireless antenna unit 104 is disposed adjacent to the conductive frame structure 102 and the coupling is generated between the short-range wireless antenna unit 104 and the conductive frame structure 102, ) Can be expanded to improve the radiation characteristic. Also, since the near-field wireless function can be used in the edge portion of the mobile terminal 100, even if the user grasps the mobile terminal 100, the influence of the user's hand can be reduced and the recognition rate of the near- . Further, according to the design of the mobile terminal 100, the radiation concentration area can be adjusted by changing the position of the tuning unit 106. [

The short-range wireless antenna unit 104 is connected to the conductive frame structure 102 of the mobile terminal 100. However, the short-range wireless antenna unit 104 may be connected to the mobile terminal 100 (For example, a metal case, a metal outer case, a metal sheet, or the like).

Table 1 is a table comparing NFC characteristics of an antenna device according to an exemplary embodiment and a conventional NFC antenna. Here, the conventional NFC antenna is located at the central portion on the back side of the mobile terminal, and the NFC antenna alone is used. Test point a) was the center of the short-range wireless antenna and test point b) was the segmented part of the conductive frame structure (open section).

Test Test
point NFC characteristics Card Mode (mm) Reader Mode (mm) EMV (mm Volt) Lee
more
group ACR122 Tag type Topaz Mifare
Classic 1K Ultra Light Desire EV1 standard
Point 10mm
Separation 20mm spacing 30mm
Separation Conventional
Technology a) 38 28 41 39 23 34.3 20.1 14.5 6.4 b) - - - - - - - - - suggestion
Technology a) 40 30 43 39 23 38.2 21.4 15.6 7.2 b) 38 27 40 38 23 37.0 20.4 14.2 6.2

Referring to Table 1, Near Field Communication (NFC) characteristics were measured in three items. Three items were measured: 1) Card Mode, 2) Reader Mode, and 3) EMV (Europay Mastercard Visa).

Here, the card mode (Card Mode) is a measurement of the recognition distance (mm) when the short-range wireless antenna unit 104 operates as a tag. At this time, ACR 122 was used as a reader. In the case of the present invention, it can be seen that the segment 102a of the conductive frame structure 102 also shows a recognition distance almost equal to that of the short-range wireless antenna unit 104. [

The reader mode is a measurement of the recognition distance (mm) when the short-range wireless antenna unit 104 operates as a reader. At this time, Topaz, Mifare Classic 1K, Ultra Light and Desfire EV1 were used as the tag types. In the case of the present invention, it can be seen that the segment 102a of the conductive frame structure 102 also shows a recognition distance almost equal to that of the short-range wireless antenna unit 104. [

The EMV (Europay Mastercard Visa) is intended to measure whether the EMV conforms to the EMV standard. The EMV (Europay Mastercard Visa) is designed to measure whether the EMV complies with the EMV standard. mmV). In the case of the present invention, it can be seen that the segment portion 102a of the conductive frame structure 102 also exhibits magnetic strength almost equal to that of the short-range wireless antenna portion 104. [

2 is a diagram illustrating a mobile terminal according to another exemplary embodiment. Here, the difference from the embodiment shown in FIG. 1 will be mainly described.

Referring to FIG. 2, the mobile terminal 100 may include a conductive frame structure 102, a short-range wireless antenna unit 104, and a tuning unit 106.

Here, the conductive frame structure 102 of the mobile terminal 100 may be divided into a plurality of segments. Some of the plurality of segmented conductive frame structures 102 may be used as separate antennas and others may be coupled to the short-range wireless antenna section 104. That is, some of the plurality of conductive frame structures 102 are provided to emit electromagnetic waves independently of the current supplied from the mobile terminal 100, and some of them are connected to the short-range wireless antenna unit 104, Ring.

In an exemplary embodiment, conductive rim structure 102 may be segmented into a first part 121, a second part 123, a third part 125, and a fourth part 127. The first part 121 may be spaced apart from one end of the second part 123 and the third part 125 between the second part 123 and the third part 125, The fourth part 127 may be spaced apart from the other part of the second part 123 and the third part 125 between the second part 123 and the third part 125, respectively.

Here, the first part 121 may receive current from the mobile terminal 100 independently and emit electromagnetic waves. For example, the first part 121 may be electrically connected to the main board of the mobile terminal 100 through a feed line (not shown) to receive the current independently. At least one of the second part 123 and the third part 125 may be electrically connected to the ground of the mobile terminal 100.

The short-range wireless antenna unit 104 may be provided adjacent to the fourth part 127 and spaced apart from the fourth part 127. The short-range wireless antenna unit 104 may be provided adjacent to the fourth part 127 so as to be coupled to the fourth part 127. The fourth part 127 is fed as coupling through the short-range wireless antenna unit 104 and used as a short-range wireless antenna. The fourth part 127 may be provided at least in one segment. A tuning section 106 may be provided at the segmented part of the fourth part 127. The tuning section 106 may be formed in the segmented part of the fourth part 127. [ The tuning unit 106 may be provided to electrically connect the segmented part of the fourth part 127. The tuning unit 106 serves to make the frequency band of the fourth part 127 correspond to the frequency band of the short-range wireless antenna unit 104. The tuning section 106 may be formed by a combination of an inductor or a capacitor or an inductor and a capacitor according to the length of the fourth part 127.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, I will understand. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

100: mobile terminal
102: Conductive frame structure
104: short-range wireless antenna unit
106: Tuning unit
111:
113: feed pad
115: grounding pad
117: Base member
121: Part 1
123: Part 2
125: Part 3
127: Part 4

Claims (10)

An antenna device mounted on a mobile terminal,
A conductive rim structure provided along a rim of the mobile terminal and including at least one segment; And
And a short-range wireless communication antenna unit disposed adjacent to the conductive frame structure and spaced apart from the conductive frame structure, the short-range wireless communication antenna unit being provided inside the mobile terminal, and being disposed symmetrically with respect to the center of the mobile terminal,
Wherein the conductive frame structure is coupled to receive power via the short-range wireless communication antenna unit.
delete The method according to claim 1,
The antenna device includes:
And a tuning section formed in the segment section.
The method of claim 3,
The tuning unit includes:
Wherein the frequency band of the conductive frame structure corresponds to the frequency band of the short-range wireless communication antenna unit.
delete An antenna device mounted on a mobile terminal,
A conductive frame structure provided along the rim of the mobile terminal and including at least one segment and being divided into a plurality of parts, at least one part of the plurality of parts being used as an antenna by receiving current from the mobile terminal; And
And a short range wireless communication antenna unit disposed adjacent to another part of the plurality of parts but spaced apart from the other part and provided inside the mobile terminal and being provided to be symmetrical with respect to the center of the mobile unit,
And the other part is fed through coupling via the short-range wireless communication antenna unit.
delete The method of claim 6,
The other part is divided into a plurality of sections,
The antenna device includes:
And a tuning section formed on the segmented part of the other part.
The method of claim 8,
The tuning unit includes:
And the frequency band of the other part corresponds to the frequency band of the short-range wireless communication antenna unit.
delete
KR1020150093391A 2015-06-30 2015-06-30 Antenna device KR101691741B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020150093391A KR101691741B1 (en) 2015-06-30 2015-06-30 Antenna device
PCT/KR2016/006088 WO2017003108A1 (en) 2015-06-30 2016-06-09 Antenna device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150093391A KR101691741B1 (en) 2015-06-30 2015-06-30 Antenna device

Publications (1)

Publication Number Publication Date
KR101691741B1 true KR101691741B1 (en) 2016-12-30

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WO (1) WO2017003108A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106550195A (en) * 2017-01-19 2017-03-29 深圳前海弘稼科技有限公司 A kind of information getting method and acquisition equipment
US10917773B1 (en) * 2020-04-03 2021-02-09 Nxp B.V. Near-field wireless device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120004338A (en) * 2010-07-06 2012-01-12 애플 인크. Tunable antenna systems
KR20120016778A (en) * 2010-08-17 2012-02-27 삼성전자주식회사 Built-in antenna and method for improving antenna efficiency
KR101339018B1 (en) 2013-04-11 2013-12-09 에이큐 주식회사 Battery pack with nfc antenna

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090085321A (en) * 2008-02-04 2009-08-07 주식회사 케이티테크 Portable terminal having tunable antenna
US8836587B2 (en) * 2012-03-30 2014-09-16 Apple Inc. Antenna having flexible feed structure with components
KR101467196B1 (en) * 2013-03-29 2014-12-01 주식회사 팬택 Terminal including multiband antenna using conductive border

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120004338A (en) * 2010-07-06 2012-01-12 애플 인크. Tunable antenna systems
KR20120016778A (en) * 2010-08-17 2012-02-27 삼성전자주식회사 Built-in antenna and method for improving antenna efficiency
KR101339018B1 (en) 2013-04-11 2013-12-09 에이큐 주식회사 Battery pack with nfc antenna

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