WO2006043543A1 - 非接触通信アンテナ及び携帯型移動端末 - Google Patents
非接触通信アンテナ及び携帯型移動端末 Download PDFInfo
- Publication number
- WO2006043543A1 WO2006043543A1 PCT/JP2005/019112 JP2005019112W WO2006043543A1 WO 2006043543 A1 WO2006043543 A1 WO 2006043543A1 JP 2005019112 W JP2005019112 W JP 2005019112W WO 2006043543 A1 WO2006043543 A1 WO 2006043543A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- communication antenna
- contact communication
- card
- battery cover
- Prior art date
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Classifications
-
- 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
-
- 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
Definitions
- the present invention relates to a non-contact communication antenna structure for non-contact communication, and more particularly to a non-contact communication antenna on a transbonder side mounted in a small mobile terminal such as a mobile phone.
- FIG. 4 shows a wireless communication module disclosed in Patent Document 1.
- the wireless communication module 100 is incorporated inside the notch lid 101, and is connected to the antenna coil 102 for transmitting / receiving signals to / from an external reader / writer device, and the antenna coil 102. And an IC chip 103 that exhibits a non-contact IC card function, and a sheet-like electromagnetic shielding material 104 that reduces the adverse effects of the metal plate inside the battery.
- Patent Document 1 Japanese Unexamined Patent Publication No. 2003-67692 (Fig. 4)
- the present invention has been made to solve the conventional problems, and a non-contact communication antenna and a mobile phone that maintain communication performance equivalent to that of a conventional card type without greatly changing the conventional shape of a mobile phone.
- An object is to provide a mobile terminal.
- the non-contact communication antenna of the present invention has a configuration in which a planar coil is embedded on the back surface of a battery cover of a portable mobile terminal, and a tuning capacitor is loaded on a terminal portion of the planar coil to form a resonant antenna.
- the planar coil connected to the tuning capacitor and constituting the resonant antenna is integrally embedded in the back surface of the battery cover that can obtain a relatively large area.
- the communicable distance increases and stable communication can be performed easily.
- the battery cover is usually made of plastic and is extremely transparent in the vicinity of the magnetic field for non-contact communication, the antenna can be embedded when the battery cover is molded, and can be easily installed.
- the antenna part can be easily detached from the main unit, making it easier to deal with variations during mass production.
- the non-contact communication antenna according to the present invention has a configuration in which the output of the non-contact communication antenna is input to the card accommodated in the portable mobile terminal via the connector contact. .
- the non-contact communication antenna according to the present invention has a configuration in which the planar coil is multilayered and combined in parallel.
- planar coil is multilayered and combined in parallel, so that the surface area of the coil conductor increases. Therefore, high-frequency loss is reduced, and the Q value of the coil, which is the ratio of stored energy to loss energy, increases, leading to an increase in communication distance.
- the non-contact communication antenna according to the present invention has a configuration in which a magnetic sheet is covered so as to cover the whole or a part thereof.
- the whole or part of the non-contact communication antenna is covered and covered with the magnetic sheet, so that the eddy current loss due to the metal used in the battery pack is reduced due to the magnetic shielding effect.
- the adverse effect on the coil antenna such as generation can be eliminated.
- the non-contact communication antenna according to the present invention has a configuration in which an IC chip that performs communication signal processing is mounted on a card accommodated in a portable mobile terminal.
- an IC chip that performs communication signal processing is mounted on a card accommodated in a portable mobile terminal, so that communication for different purposes can be performed by exchanging the card.
- the contactless communication antenna according to the present invention has a configuration in which a card is replaceably mounted in a socket.
- the IC chip can be easily removed from the socket, and therefore, communication for different applications can be easily performed by exchanging with a different type of card.
- the non-contact communication antenna according to the present invention has a configuration in which a magnetic sheet is not closely attached to a planar coil, and an interval of 0.1 mm to lmm is provided.
- the contactless communication antenna according to the present invention is exchanged in accordance with the type of the exchanged card when the force card having the IC chip is exchanged with a different type of card. It has a configuration that makes it possible to
- a portable mobile terminal that is useful in the present invention is equipped with the above-described non-contact communication antenna. It has a configuration.
- the planar coil connected to the tuning capacitor and constituting the resonant antenna is embedded in the back surface of the battery cover that can obtain a relatively large area, and is further formed into a parallel composite coil.
- the communicable distance is increased compared to the antenna opening area, which enables easy and stable communication.
- FIG. 1 is a cross-sectional view of a non-contact communication antenna according to an embodiment of the present invention.
- FIG. 2 is an exploded view of the non-contact communication antenna according to the embodiment of the present invention.
- FIG. 3 is an enlarged cross-sectional view of a main part of the non-contact communication antenna according to the embodiment of the present invention.
- FIG. 4 is a perspective view of a conventional non-contact communication antenna.
- FIG. 1 is a cross-sectional view of a contactless communication antenna and a portable mobile terminal according to an embodiment of the present invention
- FIG. 2 is an exploded view of the contactless communication antenna according to the embodiment of the present invention
- FIG. FIG. 2 is an enlarged cross-sectional view of a main part of a contactless communication antenna and a portable mobile terminal according to an embodiment.
- the non-contact communication antenna 20 has an antenna coil 22, which is a planar coil, embedded in the back surface (inside surface) 21 a of the battery cover 21 of a mobile phone 10 as a portable mobile terminal.
- a tuning capacitor 23 is loaded on the terminal portion 22a of the antenna coil 22 to form a resonant antenna 24.
- the antenna coil 22 has a multi-layered structure in which planar coils are multilayered.
- the mobile phone 10 is, for example, a foldable type, and an upper housing 10a and a lower housing 10b are connected to each other by a hinge 10c so as to be freely opened and closed.
- a liquid crystal display (not shown) is provided on the inner side surface of the upper casing 10a, and various operation buttons (not shown) are provided on the inner side surface of the lower casing 10b.
- the upper housing 10a and the lower housing 10b are opened, and the operation buttons are operated while looking at the liquid crystal display unit. However, reception and transmission are performed using the non-contact communication antenna 20. In this case, as shown in FIG. 1, the upper housing 10a and the lower housing 10b can be closed.
- a non-contact communication antenna 20 and a battery pack 27 are built in the lower housing 10b, and a battery cover made of, for example, a plastic molded product is provided on the outer surface (the lower surface in Fig. 1) of the lower housing 10b. 21 is openable and detachable! /
- the antenna coil 22 In addition to the case where the antenna coil 22 is embedded in the back surface 21a of the battery cover 21 as described above, the antenna coil 22 should be attached in close contact with the back surface 21a of the battery cover 21. [0041] As shown in FIG. 2, the antenna coil 22 is formed by patterning, for example, on a polyimide film by photoetching. A resonant antenna 24 is mounted.
- the terminal portion 22a is provided with a contact contact surface land (not shown) so that connection and disconnection can be easily performed during battery replacement. Therefore, when the battery is removed, the power is turned off. When the battery is inserted and the battery cover is attached, the battery is connected.
- the output of the non-contact communication antenna 20 is input to a card 31 accommodated in the mobile phone 10 via a contact panel 25 which is a connector contact.
- an IC chip 32 that performs non-contact communication signal processing is mounted in the card 31, and exchanges data with the reader / writer.
- the card 31 can be easily inserted from the socket 33. By exchanging it with a card 31 of a different type, communication for different purposes can be performed.
- the IC chip 32 becomes a chip different from that before the exchange by exchanging with a card 31 of a different type. Because the IC chip 32 is changed to a different one after replacement, the input impedance of the IC chip 32 may change before and after the replacement.
- the non-contact communication antenna 20 is optimized according to the input impedance of the IC chip 32 in order to optimize communication. If the input impedance of the IC chip 32 changes due to the replacement of the card 31, the battery cover 21 in which the non-contact communication antenna 20 is embedded is replaced with an optimized human power impedance to optimize communication. It is also possible to plan.
- the signal received by the antenna coil 22 is also input to the card 31 loaded on the mobile phone 10 side via the contact panel 25 in terms of output terminal force.
- the tuning capacitor of the antenna coil 22 can also be provided on the substrate 34 to which the contact panel is attached. In this case, the same specifications are desired for the input capacity of the IC chip 32 of the card 31 to be replaced.
- the battery pack 27 uses metal inside to adversely affect the coil antenna 22 such as causing eddy current loss. Therefore, the magnetic material sheet 26 covers or hides the whole or part of the antenna coil 22. Is provided. Battery cover 21 includes magnetic material sheet 26. The entire back surface 21a of the battery cover 21 can be used as an antenna opening area.
- the magnetic material sheet 26 is mounted with a spacer 28 interposed so as not to be in close contact with the antenna coil 22.
- the spacer 28 is adjusted in thickness by, for example, a double-sided adhesive sheet, and a gap of about O. lmm to about Lmm is provided.
- the coil antenna 22 for non-contact communication is mounted on the battery cover 21 of the mobile phone 10, a relatively large opening area can be obtained, and it is also easy to obtain an isolation with the radio circuit of the terminal and various antennas. Therefore, it is easy to implement and at the same time, interference with other communications can be prevented. In addition, stable non-contact communication with a wide communication distance is possible.
- the battery cover 21 is usually made of plastic and is very transparent to the magnetic field in the vicinity of non-contact communication, the antenna coil 22 can be embedded when the battery cover 21 is molded, and can be easily provided. it can. Furthermore, by removing the battery cover 21, the antenna part can be easily separated from the main body, which makes it possible to cope with variations during mass production.
- non-contact communication antenna 20 and the portable mobile terminal 10 of the present invention are not limited to the above-described embodiments, and can be appropriately modified and improved.
- Non-contact communication antenna The specific example of the non-contact communication antenna which concerns on this invention is shown.
- Non-contact communication antenna described above is shown.
- the volume increase of the mobile phone 10 is about 1. between the battery pack 27 and the battery cover 21.
- the breakdown of the thickness is, for example, the antenna coil 22 force 0.4 mm, the gap 0.6 mm, and the magnetic material sheet 26 0.5 mm.
- the planar coil connected to the tuning capacitor and constituting the resonant antenna is embedded in the back surface of the battery cover that can obtain a relatively large area. Therefore, the communicable distance increases in proportion to the area, and stable communication can be easily performed.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-303095 | 2004-10-18 | ||
JP2004303095 | 2004-10-18 |
Publications (1)
Publication Number | Publication Date |
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WO2006043543A1 true WO2006043543A1 (ja) | 2006-04-27 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/019112 WO2006043543A1 (ja) | 2004-10-18 | 2005-10-18 | 非接触通信アンテナ及び携帯型移動端末 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008054113A (ja) * | 2006-08-25 | 2008-03-06 | Casio Hitachi Mobile Communications Co Ltd | 携帯電子機器 |
JP2008294993A (ja) * | 2007-05-28 | 2008-12-04 | Panasonic Electric Works Co Ltd | ワイヤレス送信器 |
EP2223789A3 (en) * | 2009-02-10 | 2010-10-27 | Cheil Industries Inc. | In-mold type RF antenna, device including the same, and associated methods |
US9379427B2 (en) | 2013-04-26 | 2016-06-28 | Apple Inc. | Methods for manufacturing an antenna tuning element in an electronic device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09205311A (ja) * | 1996-01-26 | 1997-08-05 | Kojima Press Co Ltd | ルーフキャリア兼用アンテナ |
JP2003216899A (ja) * | 2002-01-22 | 2003-07-31 | Hitachi Cable Ltd | 携帯型無線端末及びそれを用いた情報移転システム |
JP2004252804A (ja) * | 2003-02-21 | 2004-09-09 | Mitsubishi Electric Corp | 端末装置及び電池パック |
-
2005
- 2005-10-18 WO PCT/JP2005/019112 patent/WO2006043543A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09205311A (ja) * | 1996-01-26 | 1997-08-05 | Kojima Press Co Ltd | ルーフキャリア兼用アンテナ |
JP2003216899A (ja) * | 2002-01-22 | 2003-07-31 | Hitachi Cable Ltd | 携帯型無線端末及びそれを用いた情報移転システム |
JP2004252804A (ja) * | 2003-02-21 | 2004-09-09 | Mitsubishi Electric Corp | 端末装置及び電池パック |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008054113A (ja) * | 2006-08-25 | 2008-03-06 | Casio Hitachi Mobile Communications Co Ltd | 携帯電子機器 |
JP2008294993A (ja) * | 2007-05-28 | 2008-12-04 | Panasonic Electric Works Co Ltd | ワイヤレス送信器 |
EP2223789A3 (en) * | 2009-02-10 | 2010-10-27 | Cheil Industries Inc. | In-mold type RF antenna, device including the same, and associated methods |
EP2353834A1 (en) * | 2009-02-10 | 2011-08-10 | Cheil Industries Inc. | In-mold type RF antenna, device including the same, and associated methods |
US8400363B2 (en) | 2009-02-10 | 2013-03-19 | Cheil Industries, Inc. | In-mold type RF antenna, device including the same, and associated methods |
US9379427B2 (en) | 2013-04-26 | 2016-06-28 | Apple Inc. | Methods for manufacturing an antenna tuning element in an electronic device |
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