KR20160136488A - Antenna structure for portable phone - Google Patents

Antenna structure for portable phone Download PDF

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Publication number
KR20160136488A
KR20160136488A KR1020150069401A KR20150069401A KR20160136488A KR 20160136488 A KR20160136488 A KR 20160136488A KR 1020150069401 A KR1020150069401 A KR 1020150069401A KR 20150069401 A KR20150069401 A KR 20150069401A KR 20160136488 A KR20160136488 A KR 20160136488A
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KR
South Korea
Prior art keywords
portable terminal
antenna
antenna structure
present
magnetic block
Prior art date
Application number
KR1020150069401A
Other languages
Korean (ko)
Other versions
KR101686789B1 (en
Inventor
박종진
장정욱
김진혁
Original Assignee
주식회사 아이엠텍
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.)
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Publication date
Application filed by 주식회사 아이엠텍 filed Critical 주식회사 아이엠텍
Priority to KR1020150069401A priority Critical patent/KR101686789B1/en
Publication of KR20160136488A publication Critical patent/KR20160136488A/en
Application granted granted Critical
Publication of KR101686789B1 publication Critical patent/KR101686789B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
    • 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
    • H01Q1/2216—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 used in interrogator/reader equipment
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0264—Details of the structure or mounting of specific components for a camera module assembly

Abstract

The present invention relates to an antenna structure for a portable phone. A coil (20) is wound around the outer peripheral surface of a magnetic block. The electronic part of a portable terminal can be inserted through a through hole (11) of the magnetic block (10). So, it can be easily used as an antenna for a portable terminal. Particularly, the antenna structure for a portable terminal can thoroughly prevent signal interference from the electronic part due to the magnetic block (10), that is, the induction of an eddy current.

Description

ANTENNA STRUCTURE FOR PORTABLE PHONE < RTI ID = 0.0 >

The present invention relates to an antenna structure for a portable terminal, and more particularly, to an antenna structure for a portable terminal, in which a coil is wound around an outer circumferential surface of a magnetic block and an electronic component of the portable terminal is inserted through a through- And more particularly to an antenna structure for a portable terminal.

Generally, mobile terminals include smart phones, tablet PCs, notebooks, and PDAs.

An antenna built in a portable terminal is changing from an external antenna to an internal antenna in order to make the external appearance more beautiful and to obtain additional frequency diversity.

1 is a perspective view showing a camera module serving as an antenna of a communication device according to the prior art document (Japanese Patent No. 0694876).

The camera module 100 serving as an antenna of a communication device according to the prior art includes a camera 110, an antenna 120, and a power feeder 140.

The camera unit 110 has a built-in image sensor and is mounted on one side of the main board 130 of the communication device for photographing a subject.

The antenna 120 is for receiving a radio wave from a communication device and is disposed on an outer surface of the camera 110. In one embodiment, the antenna 120 is a helical type antenna in which a conductive antenna 120 is wrapped around the camera 110 from one side of the camera 110 to the other side. .

The power feeder 140 smoothly supplies power to the antenna 120 so that the antenna 120 is impedance-matched. Since such a power feeder 140 itself is well known, a detailed description thereof will be omitted. The power feeder 140 may be coupled to the main board 130 of the communication device by a contact type or a capacitive couple. The non-contact type uses the induction current of the coil or uses a capacitor. Such a non-contact type is also well known, and a detailed description thereof will be omitted.

However, the camera module serving as the antenna of the communication device according to the prior art document has a problem that the communication quality is remarkably lowered when the near field wireless communication is performed by the magnetic field of the metal component of the camera section 110.

Korean Patent No. 0694876

It is an object of the present invention to provide an antenna structure for a portable terminal which enables a coil to be wound around an outer circumferential surface of a magnetic block and insert an electronic component of the portable terminal through a through hole of a magnetic block so that the coil can be simply used as an antenna for a portable terminal .

SUMMARY OF THE INVENTION It is an object of the present invention to provide an antenna structure for a portable terminal which can thoroughly prevent signal interference from an electronic part, that is, induction of an eddy current, by a magnetic block.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an antenna structure for a portable terminal that allows easy insertion of electronic parts even if there is a difference in the inner diameter and the outer diameter of the portable part.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an antenna structure for a portable terminal capable of minimizing surface contact between electronic components by vanes to prevent deterioration of the electronic components themselves and to ensure a service life.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an antenna structure for a portable terminal that can assure a rigid assembly by preventing an electronic component from easily falling off even if an external impact is applied by the wing.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an antenna structure for a portable terminal which can maintain a state in which a coil is wound on the outer peripheral surface of a magnetic block more firmly.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an antenna structure for a portable terminal that is built in a portable terminal and occupies an occupied space more efficiently.

According to an aspect of the present invention, there is provided an antenna structure for a portable terminal,

A magnetic block in which a through hole is formed, and a coil wound around the outer peripheral surface of the magnetic block.

According to the present invention, a coil is wound around an outer circumferential surface of a magnetic block, and an electronic part of a portable terminal can be inserted through a through hole of a magnetic block.

The present invention has an effect of thoroughly preventing signal interference from an electronic component, that is, induction of an eddy current, by a magnetic block.

The present invention has the effect of allowing easy insertion even if there is a difference between the inner diameter and the outer diameter of the electronic parts of the portable terminal.

The present invention has the effect of minimizing the surface contact between the electronic parts by the wings, thereby preventing the deterioration of the electronic parts themselves and ensuring their service life.

The present invention has the effect of assuring a rigid assembly by preventing an electronic component from easily falling off even if an external impact is applied by the wing even though the electronic component is easily fitted.

The present invention has an effect that the coil can be more firmly wound around the outer peripheral surface of the magnetic block.

The present invention has an effect of occupying an occupied space more efficiently while being installed in a portable terminal.

1 is a perspective view showing a camera module serving as an antenna of a communication device according to a prior art document (Patent No. 0694876).
FIG. 2A is an exploded perspective view illustrating an antenna structure for a portable terminal according to the present invention; FIG.
2B is a cross-sectional view illustrating an antenna structure for a portable terminal according to the present invention.
FIG. 3A is a perspective view including a receiver speaker for explaining an antenna structure for a portable terminal according to a first embodiment of the present invention; FIG.
FIG. 3B is an exploded perspective view illustrating a structure of an antenna for a portable terminal according to a first embodiment of the present invention, including a receiver speaker; FIG.
3C is a photograph illustrating a receiver speaker for explaining an antenna structure for a portable terminal according to a first embodiment of the present invention.
4A is a perspective view including a camera module for explaining an antenna structure for a portable terminal according to a second embodiment of the present invention;
FIG. 4B is an exploded perspective view including a camera module for explaining an antenna structure for a portable terminal according to a second embodiment of the present invention; FIG.

The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. These and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings. It becomes understandable.

The antenna for a portable terminal performs radio communication in a far field and serves as an inductor coupling system in a short distance.

An operating frequency of an NFC used for short-range wireless communication as an antenna for a portable terminal is 13.56 MHz, which is a loop coil, and the loop coil acts as an inductor.

That is, when one inductor passes around another inductor, an induced current is generated in the second inductor, and the principle of NFC is to use this non-contact energy transfer.

The loop coil occupies as much surface area as the device permits, and when a current flows through the loop coil, a strong magnetic field is formed, and the magnetic field increases proportionally as the number of turns of the loop coil increases.

The NFC reader is excited to 13.56 MHz through the leading antenna to induce the magnetic field. If the smartphone is nearby, this magnetic field can again communicate by drawing current into the NFC of the smartphone and reading the induced current.

An antenna for a portable terminal is installed near or on a metal in most cases. However, the metal prevents the antenna for the portable terminal in the system from receiving the signal. If the loop coil is installed close to the metal, many phenomena occur because the metal reduces the inductance of the loop coil, and thus the Q factor is lowered to reduce the self-resonance frequency And further, the magnetic field induces Eddy Current in the metal.

Eddy currents produce magnetic fields in opposite directions in accordance with Lenz's Law, which is a big problem in short-range wireless communication systems because loop coils are generally mounted on metal.

For example, when NFC is placed near a metal surface, the performance of the NFC sharply decreases. This is because the ground plane existing directly under the magnetic field or the electric field greatly reduces the intensity of the electromagnetic field, that is, the intensity of the signal, and thus interferes with the short-range wireless communication of the antenna for the portable terminal.

The simplest and easiest solution to prevent this communication or fail is to leave a space between the antenna and the metal surface.

For example, in the case of 13.56 MHz, if free space of 2-3 cm is placed between the antenna structure of the portable terminal and the metal, it is not affected by the surrounding metal. However, when installing NFC in a smartphone or tablet PC, air space of 2 to 3 cm is almost impossible.

A more effective way to prevent eddy currents in the metal from being generated by the magnetic field and thus to create a magnetic field in the opposite direction is to use a material with a high resistivity and a high permeability to move the magnetic field away from the metal. That is, it is necessary to provide a magnetic material having a high magnetic permeability between the NFC antenna and the metal ground plane.

This magnetic body acts to concentrate the magnetic field and increase the effective distance between the NFC and the ground plane.

Near Field Communication (NFC) is a type of RFID that is used for a non-contact type portable terminal using a frequency band of about 13.56 MHz. The NFC is a non-contact magnetic inducible coupling And MST (Magnetic Secure Transmission) is for transmitting external mutual data by non-contact magnetic inductive coupling force of 13.56 MHz in a short distance of 10 to 200 cm.

FIG. 2A is an exploded perspective view illustrating an antenna structure for a portable terminal according to the present invention, and FIG. 2B is a cross-sectional view illustrating an antenna structure for a portable terminal according to the present invention.

The antenna structure for a portable terminal according to the present invention includes a magnetic block 10 in which a through hole 11 is opened and a coil 20 wound around an outer circumferential surface of the magnetic block 10 as a core configuration.

The coil 20 is wound on the outer circumferential surface of the magnetic block so that the electronic part of the portable terminal can be inserted through the through hole 11 of the magnetic block 10 so that it can be easily used as an antenna for a portable terminal, The block 10 can thoroughly prevent the signal interference from the electronic component, that is, the induction of the eddy current.

At this time, the magnetic block 10 has jagged blades 12 along the inner circumferential surface of the through hole 11 so that it can be easily inserted even if the inner and outer diameters of the electronic parts of the portable terminal are different. The surface contact between the electronic parts is minimized to prevent the deterioration of the electronic parts themselves and to ensure the service life. Particularly, even when the electronic parts are fitted easily, even if external impact is applied by the blades 12, So as to assure robust assembly.

Further, the magnetic block 10 has a helical groove 13 for receiving the coil 20 along the outer circumferential surface thereof, so that the coil 20 is more firmly wound around the outer circumferential surface of the magnetic block 10 .

FIG. 3A is a perspective view including a receiver speaker for explaining an antenna structure for a portable terminal according to a first embodiment of the present invention, FIG. 3B is a perspective view of a receiver for explaining an antenna structure for a portable terminal according to a first embodiment of the present invention, FIG. 3C is a photograph including a receiver speaker for explaining an antenna structure for a portable terminal according to the first embodiment of the present invention. FIG.

The antenna structure for a portable terminal according to the first embodiment of the present invention is configured such that a receiver speaker R for transmitting sound is inserted into the through hole 11 of the magnetic block so as to be occupied in the portable terminal, .

FIG. 4A is a perspective view including a camera module for explaining an antenna structure for a portable terminal according to a second embodiment of the present invention, FIG. 4B is a view for explaining an antenna structure for a portable terminal according to a second embodiment of the present invention, Fig.

The antenna structure for a portable terminal according to the second embodiment of the present invention includes a camera module C for capturing an image in a through hole 11 of a magnetic block 10 so as to be embedded in the portable terminal, So that it can occupy efficiently.

The present invention can be used in a wireless communication field used for a smart phone, a tablet PC, a notebook, a PDA, and various home appliances.

10: magnetic block 11: through hole
12: wing 13: spiral groove
20: coil C: camera module
R: Receiver speaker

Claims (5)

And a coil (20) wound around an outer circumferential surface of the magnetic block (10), characterized in that the magnetic block (10) has a through hole (11) formed therein. The method according to claim 1,
Wherein the magnetic block (10) has jagged wings (12) along the inner circumferential surface of the through hole (11). The method according to claim 1,
Wherein the magnetic block (10) has a spiral groove (13) for receiving the coil (20) along an outer circumferential surface thereof. 4. The method according to any one of claims 1 to 3,
And a camera module (C) for capturing an image is inserted into the through hole (11). 4. The method according to any one of claims 1 to 3,
And a receiver speaker (R) for transmitting sound to the through hole (11) is inserted.
KR1020150069401A 2015-05-19 2015-05-19 Antenna structure for portable phone KR101686789B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150069401A KR101686789B1 (en) 2015-05-19 2015-05-19 Antenna structure for portable phone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150069401A KR101686789B1 (en) 2015-05-19 2015-05-19 Antenna structure for portable phone

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KR20160136488A true KR20160136488A (en) 2016-11-30
KR101686789B1 KR101686789B1 (en) 2016-12-16

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180108369A (en) * 2017-03-23 2018-10-04 삼성전기주식회사 Chip antenna
US10998613B2 (en) 2017-03-23 2021-05-04 Wits Co., Ltd. Chip antenna
KR102636494B1 (en) * 2023-06-28 2024-02-14 주식회사 윌켐코리아 RFID tag for tire burial with improved transmission and reception sensitivity

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000018973A (en) * 1998-09-07 2000-04-06 구관영 Dual band helical antenna for portable communication terminal using ceramic dielectric
KR100694876B1 (en) 2006-02-09 2007-03-13 주식회사 엠씨넥스 Camera module for antenna of communication device
KR20070107654A (en) * 2004-12-17 2007-11-07 히타치 긴조쿠 가부시키가이샤 Hexagonal ferrite, and antenna and communication equipment using the same
KR20080009392A (en) * 2006-07-24 2008-01-29 주식회사 엠씨넥스 Communication device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000018973A (en) * 1998-09-07 2000-04-06 구관영 Dual band helical antenna for portable communication terminal using ceramic dielectric
KR20070107654A (en) * 2004-12-17 2007-11-07 히타치 긴조쿠 가부시키가이샤 Hexagonal ferrite, and antenna and communication equipment using the same
KR100694876B1 (en) 2006-02-09 2007-03-13 주식회사 엠씨넥스 Camera module for antenna of communication device
KR20080009392A (en) * 2006-07-24 2008-01-29 주식회사 엠씨넥스 Communication device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180108369A (en) * 2017-03-23 2018-10-04 삼성전기주식회사 Chip antenna
US10998613B2 (en) 2017-03-23 2021-05-04 Wits Co., Ltd. Chip antenna
KR102636494B1 (en) * 2023-06-28 2024-02-14 주식회사 윌켐코리아 RFID tag for tire burial with improved transmission and reception sensitivity

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Publication number Publication date
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