WO2013088912A1 - Antenna device and electronic instrument - Google Patents

Antenna device and electronic instrument Download PDF

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Publication number
WO2013088912A1
WO2013088912A1 PCT/JP2012/079917 JP2012079917W WO2013088912A1 WO 2013088912 A1 WO2013088912 A1 WO 2013088912A1 JP 2012079917 W JP2012079917 W JP 2012079917W WO 2013088912 A1 WO2013088912 A1 WO 2013088912A1
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WO
WIPO (PCT)
Prior art keywords
coil
opening
magnetic sheet
terminals
printed circuit
Prior art date
Application number
PCT/JP2012/079917
Other languages
French (fr)
Japanese (ja)
Inventor
池田　義人
憲男 斎藤
弘幸 良尊
管野　正喜
Original Assignee
デクセリアルズ株式会社
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
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Application filed by デクセリアルズ株式会社 filed Critical デクセリアルズ株式会社
Publication of WO2013088912A1 publication Critical patent/WO2013088912A1/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
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems

Definitions

  • the present invention relates to an antenna device incorporated in an electronic device and capable of communicating by receiving a magnetic field transmitted from a transmitter, and an electronic device incorporating the antenna device.
  • This application includes Japanese Patent Application No. 2011-271919 filed on December 13, 2011 in Japan and Japanese Patent Application No. 2012-252850 filed on November 19, 2012 in Japan. On the basis of priority, and these applications are incorporated herein by reference.
  • High-performance portable electronic devices such as smartphones are equipped with short-range wireless communication functions such as RFID (Radio Frequency Identification) (for example, Patent Document 1).
  • RFID Radio Frequency Identification
  • Patent Document 1 High-performance portable electronic devices
  • the non-contact charging function is installed in order to reduce the complexity.
  • Qi (Qi) standard non-contact charging devices that use a low frequency of about 110 to 200 kHz have been installed in smartphones due to charging efficiency and radio wave law.
  • High-performance portable electronic devices such as smartphones are equipped with various communication antennas and camera modules, and new proposals for efficient mounting methods for non-contact charging antennas are desired.
  • high-functional portable electronic devices are also required to be thin, and a proposal for a thinner antenna module is desired.
  • the present invention has been proposed in view of such a situation, and is compatible with a short-range wireless communication function and a non-contact charging function while reducing the size of the casing of the electronic device when incorporated in the electronic device. It is an object of the present invention to provide an antenna device capable of realizing the above and an electronic apparatus incorporating the antenna device.
  • an antenna device is an antenna device incorporated in an electronic device, and includes a printed circuit board on which a first coil and a second coil are formed, and a first coil. And a magnetic sheet that draws a magnetic field to the second coil, the first coil receives a magnetic field transmitted from the transmitter, inductively couples with the transmitter, and transmits a signal to a storage medium incorporated in the electronic device.
  • the second coil receives a magnetic field transmitted from the power transmission coil of the charging device, inductively couples with the power transmission coil, supplies a charging current to a battery incorporated in the electronic device, and the magnetic sheet is a printed circuit board. It is laminated at the position superimposed on.
  • the communication device draws a magnetic field into the storage medium, the battery, the printed circuit board on which the first coil and the second coil are formed, and the first coil and the second coil.
  • the first coil receives a magnetic field transmitted from the transmitter, inductively couples with the transmitter, supplies a signal to a storage medium incorporated in the electronic device, and the second coil charges.
  • a magnetic field transmitted from a power transmission coil of the apparatus is received and inductively coupled with the power transmission coil to supply a charging current to a battery incorporated in the electronic device, and the magnetic sheet is laminated at a position superimposed on the printed circuit board. .
  • the first coil for realizing the short-range wireless communication function and the second coil for realizing the non-contact charging function are formed on the same printed circuit board. Both the short-range wireless communication function and the non-contact charging function can be realized with a single substrate while downsizing the casing of the electronic device.
  • FIGS. 6A and 6B are diagrams for explaining the positional relationship between the printed circuit board and the magnetic sheet in the antenna module according to the second modification.
  • FIG. 7B are diagrams for explaining the positional relationship between the printed circuit board and the magnetic sheet in the antenna module according to the third modification.
  • FIG. 8A and FIG. 8B are diagrams for explaining the positional relationship between the printed board and the magnetic sheet in the antenna module according to the fourth modification.
  • FIG. 9A and FIG. 9B are diagrams for explaining the positional relationship between the printed circuit board and the magnetic sheet in the antenna module according to the fifth modification.
  • FIG. 10 is a diagram for explaining the positional relationship between the printed circuit board and the magnetic sheet in the antenna module according to the sixth modification.
  • FIG. 11 is a plan view showing still another modification of the antenna module to which the present invention is applied.
  • FIG. 12 is a plan view showing still another modification of the antenna module to which the present invention is applied.
  • FIG. 11 is a plan view showing still another modification of the antenna module to which the present invention is applied.
  • FIG. 13 is a plan view showing still another modification of the antenna module to which the present invention is applied.
  • FIG. 14 is a plan view showing still another modification of the antenna module to which the present invention is applied.
  • FIG. 15 is a plan view showing still another modification of the antenna module to which the present invention is applied.
  • FIG. 16 is a plan view showing still another modification of the antenna module to which the present invention is applied.
  • FIG. 17 is a plan view showing still another modification of the antenna module to which the present invention is applied.
  • an antenna module 1a which is an antenna device to which the present invention is applied, has a RFID (Radio Frequency Identification) for short-range wireless communication on a printed circuit board 10 as shown in FIG.
  • RFID Radio Frequency Identification
  • One coil 11 and a second coil 12 for receiving power of, for example, a Qi standard non-contact charging function are formed.
  • the terminal 11a, 11b is formed in the both ends of the 1st coil 11, respectively.
  • the second coil 12 has terminals 12a and 12b formed at both ends thereof.
  • a first opening 13 is formed in the central portion of the first coil 11 in the printed circuit board 10, and the second opening 14 is provided between the first coil 11 and the second coil 12. Is formed.
  • the antenna module 1a draws a magnetic field into the first coil 11 and the second coil 12, for example, a magnetic sheet 15 as shown in FIG.
  • a magnetic sheet 15 as shown in FIG.
  • the magnetic sheet 15 is inserted into the first opening 13 and the second opening 14.
  • the magnetic sheet 15 is interposed between the first opening 13 and the second opening 14. It is arranged closer to the reader / writer 120, which will be described later, which is an RFID transmitter than the first coil 11.
  • the first coil 11 is disposed on the reader / writer 120 side and the second coil 12 has a non-contact charging function described later. Arranged on the charging device 220 side.
  • the antenna module 1 a is incorporated, for example, inside the housing 131 of the mobile phone 130, and the first coil 11 is used as a radio communication system 100 for RFID (Radio Frequency Identification).
  • RFID Radio Frequency Identification
  • the reader / writer 120 accesses the memory module 132 incorporated in the mobile phone 130 together with the antenna module 1a.
  • the first coil 11 and the reader / writer 120 are arranged to face each other in the xy plane of the three-dimensional orthogonal coordinate system xyz.
  • the reader / writer 120 functions as a transmitter that transmits a magnetic field in the z-axis direction to the first coils 11 of the antenna modules 1 a facing each other in the xy plane. Specifically, the reader / writer 120 is directed toward the first coil 11.
  • the reader / writer 120 is provided with a control board 122 electrically connected to the antenna 121.
  • a control circuit made of electronic components such as one or a plurality of integrated circuit chips is mounted on the control board 122.
  • the control circuit executes various processes based on data received from the memory module 132 via the first coil 11. For example, when transmitting data to the memory module 132, the control circuit encodes the data, modulates a carrier wave of a predetermined frequency (for example, 13.56 MHz) based on the encoded data, and modulates the modulation.
  • the signal is amplified, and the antenna 121 is driven by the amplified modulation signal.
  • the control circuit When reading data from the memory module 132, the control circuit amplifies the modulation signal of the data received by the antenna 121, demodulates the modulation signal of the amplified data, and decodes the demodulated data.
  • a coding system and a modulation system used in a general reader / writer are used. For example, a Manchester coding system or an ASK (Amplitude Shift Keying) modulation system is used.
  • the first coil 11 receives a magnetic field transmitted from the reader / writer 120 and inductively couples with the reader / writer 120, and supplies a signal to the memory module 132 that is a storage medium incorporated in the mobile phone 130. .
  • the first coil 11 When the first coil 11 receives a magnetic field transmitted from the reader / writer 120, the first coil 11 is magnetically coupled to the reader / writer 120 by inductive coupling, receives the modulated electromagnetic wave, and receives a received signal via the terminals 11a and 11b. Is supplied to the memory module 132.
  • the memory module 132 is driven by a current flowing through the first coil 11 and communicates with the reader / writer 120. Specifically, the memory module 132 demodulates the received modulation signal, decodes the demodulated data, and writes the decoded data to the internal memory of the memory module 132.
  • the memory module 132 reads data to be transmitted to the reader / writer 120 from the internal memory, encodes the read data, modulates a carrier wave based on the encoded data, and is magnetically coupled by inductive coupling.
  • the modulated radio wave is transmitted to the reader / writer 120 via the coil 11.
  • the second coil 12 is used as a Qi standard non-contact charging system 200, for example.
  • the non-contact charging system 200 charges the battery pack 133 connected to the second coil 12 of the antenna module 1a by the charging device 220.
  • the second coil 12 of the antenna module 1a and the power transmission coil 221 of the charging device 220 are similar to the positional relationship between the first coil 11 and the reader / writer 120 described above, and xy of the three-dimensional orthogonal coordinate system xyz. It is assumed that they are arranged to face each other on a plane.
  • the charging device 220 functions as a power transmission unit that transmits a magnetic field in the z-axis direction to the second coils 12 of the antenna module 1a facing each other in the xy plane, and specifically, toward the second coil 12.
  • the charging device 220 is provided with a power transmission control board 222 that is electrically connected to the power transmission coil 221.
  • a control circuit made of electronic components such as one or a plurality of integrated circuit chips is mounted. This control circuit supplies a charging current to the second coil 12 that is inductively coupled to the power transmission coil 221.
  • the power transmission control board 222 drives the power transmission coil 221 with a power transmission current having a predetermined frequency, for example, a relatively low frequency of 110 KHz.
  • the antenna module 1a is incorporated in the housing 131 of the mobile phone 130, and the second coil 12 receives the magnetic field transmitted from the power transmission coil 221 and inductively couples with the power transmission coil 221 to The received current is supplied to the battery pack 133 incorporated in 130.
  • the second coil 12 When the second coil 12 receives a magnetic field transmitted from the charging device 220, the second coil 12 is magnetically coupled to the charging device 220 by inductive coupling, receives the modulated electromagnetic wave, and receives a charging current via the terminals 12a and 12b. Is supplied to the battery pack 133.
  • the battery pack 133 applies a charging voltage corresponding to the charging current flowing through the second coil 12 to the battery cells inside the battery pack 133.
  • the first coil 11 that realizes the short-range wireless communication function and the second coil 12 that realizes the non-contact charging function are formed on the same plane of the same printed circuit board 10. Therefore, it is possible to realize both the short-range wireless communication function and the non-contact charging function while reducing the size of the housing 131 when incorporated in the mobile phone 130 which is an electronic device.
  • the magnetic sheet 15 is superimposed on the printed circuit board 10 so as to efficiently draw the magnetic fields transmitted from the reader / writer 120 and the charging device 220 into the first coil 11 and the second coil 12, respectively.
  • the magnetic sheet 15 is inserted into the first opening 13 and the second opening 14 as described above, so that the space of the casing 131 of the mobile phone 130 can be efficiently used and a good short distance can be obtained. Wireless communication characteristics can be realized.
  • the magnetic sheet 15 is placed between the first opening 13 and the second opening 14 more than the first coil 11. It is arranged on the 120 side. Further, except between the first opening 13 and the second opening 14, the first coil 11 is disposed on the reader / writer 120 side and the second coil 12 is disposed on the charging device 220 side. .
  • Such an arrangement condition can be easily realized by inserting one magnetic sheet 15 into the first opening 13 and the second opening 14. Furthermore, the antenna module 1a can obtain good communication characteristics and charging characteristics for the following reasons.
  • the second coil 12 that realizes the non-contact power feeding function preferably has a large size because a relatively large current flows. Therefore, it is necessary to arrange the second coil 12 at a position overlapping the metal plate in the housing 131. Despite this necessity, the second coil 12 prevents the magnetic flux from rebounding due to the influence of the metal plate mounted inside the mobile phone 130 by the magnetic sheet 15 being superimposed.
  • the battery pack 133 can be installed on a metal-containing component. Therefore, the 2nd coil 12 can aim at coexistence with a favorable charging characteristic and the freedom degree of arrangement
  • a metal member for example, a battery pack 133 is disposed on a surface 1a2 opposite to the surface 1a1 on which the antenna module 1a receives a magnetic field.
  • the magnetic field transmitted from the reader / writer 120 toward the z-axis direction is oriented in the xy plane direction.
  • the first coil 11 is closer to the reader / writer 120 side than the magnetic sheet 15 from the outer peripheral portion 130a to the first opening portion 13.
  • the magnetic sheet 15 is positioned closer to the reader / writer 120 than the first coil 11 from the first opening 13 to the second opening 14.
  • the antenna module 1a satisfies this condition by inserting the magnetic sheet 15 into the printed circuit board 10 as described above.
  • the magnetic sheet 15 has a thickness of a portion 152 of the magnetic sheet 15 that overlaps the second coil 12. It is particularly preferable that the layer thickness be greater than the thickness of the portion 151 overlapping the first coil 11.
  • the magnetic core in which the magnetic sheet 15 plays a role may be saturated.
  • the thickness of the portion 151 overlapping the first coil 11 is determined from the viewpoint of making it easy to insert the magnetic sheet into the openings 13 and 14 and from the viewpoint of ensuring the physical strength by making the openings 13 and 14 as small as possible.
  • the thickness of the portion 152 is preferably smaller.
  • regulated in the direction orthogonal to the insertion direction of the magnetic sheet 15, ie, an x-axis direction does not necessarily need to be uniform.
  • the width of the region 15 a from the outer peripheral portion 130 a to the first opening portion 13 is set to the other region. It may be wider than the width of 15b.
  • the portion of the magnetic sheet 15 that overlaps the first coil 11 can be made large, which is particularly preferable in terms of improving communication characteristics.
  • the magnetic sheet 15 when the magnetic sheet 15 is inserted into the printed circuit board 10, the magnetic sheet 15 is larger than the width of the region 15 a from the outer peripheral portion 130 a to the first opening portion 13. Other regions 15b may be wider.
  • the width of the second opening 14 is made wider than the width of the first opening 13, and the second opening 14 extends from the first opening 13. You may make it change the width
  • FIG. In the case shown in FIGS. 8 and 9, the magnetic sheet 15 is inserted in the order of the opening portion 14 and the opening portion 13, which is preferable from the viewpoint of ease of insertion, and overlaps with the second coil 12 as described above. It is particularly preferable when the thickness of the portion 152 to be formed is greater than the thickness of the portion 151 overlapping the first coil 11.
  • the second coil 12 transmits a larger current than the first coil 11 in order to transmit several watts of power, the magnetic flux can be generated with lower loss. Retraction is required.
  • the second coil 12 preferably has a larger coil outer area than the first coil 11.
  • the widths of the first coil 11 and the second coil 12, that is, the widths defined in the x-axis direction do not necessarily match.
  • the width of the second coil 12 may be wider than the width of the first coil 11.
  • the first coil 11 and the second coil 12 are not necessarily formed on the same surface of the printed circuit board 10.
  • each coil is independent of the upper surface and the lower surface of the printed circuit board 10. May be formed.
  • the antenna module 1a which is an antenna device to which the present invention is applied, includes terminals 11a and 11b formed at both ends of the first coil 11, and terminals 12a and 12b formed at both ends of the second coil 12. You may form at least 1 in the surface on the opposite side to the surface in which the 1st coil 11 of the printed circuit board 10 and the 2nd coil 12 were formed.
  • the antenna module 1a has a first coil 11 formed on the first surface 10a of the printed circuit board 10, and a terminal on the second surface 10b, which is a surface facing the reader / writer 120 during communication. 11a and 11b are formed.
  • the terminal 11 a is electrically connected to the outermost end portion of the first coil 11 formed on the first surface 10 a through the through hole 22.
  • the terminal 11b is electrically connected to the innermost peripheral end of the first coil 11 formed on the first surface 10a through the through hole 22 and the extraction coil 23.
  • the second coil 12 is formed on the first surface 10a of the printed circuit board 10, and the terminals 12a and 12b are formed on the second surface 10b.
  • the terminal 12 a is electrically connected to the outermost peripheral end of the second coil 12 formed on the first surface 10 a via the through hole 22.
  • the terminal 12b is electrically connected to the innermost peripheral end of the second coil 12 formed on the first surface 10a, through the through hole 22 and the extraction coil 23.
  • Each through hole 22 has a conductive layer formed therein by plating or filling with a conductive paste.
  • Each extraction coil 23 is provided between the through hole 22 facing the second surface 10b and the terminal 11b or 12b, and is formed, for example, by patterning a copper foil.
  • the antenna module 1a has the terminals 11a, 11b, 12a, and 12b of the first and second coils 11 and 12 formed on the second surface 10b through the through holes 22 and the extraction coil 23. Can be placed anywhere. Therefore, when the antenna module 1a is incorporated in an electronic device, the terminals 11a, 11b, 12a, and 12b can be formed at positions that are optimal for connection to the terminal on the electronic device side.
  • both terminals 11 a and 11 b are juxtaposed at positions overlapping the first coil 11.
  • both terminals 12 a and 12 b are arranged side by side at a position overlapping the second coil 12.
  • all the terminals 11 a, 11 b, 12 a, and 12 b are arranged in parallel at positions close to each other along the outer edge of the printed circuit board 10.
  • the antenna module 1a has the terminals 11a, 11b, 12a, and 12b of the first and second coils 11 and 12 gathered at positions close to each other. Space-saving and easy assembly can be achieved without connecting members to the terminals 11a, 11b, 12a, and 12b in the device casing.
  • first and second coils 11 and 12 and the terminals 11a, 11b, 12a, and 12b are formed on the first surface 10a of the printed circuit board 10 (see FIG. 1A), a terminal space is secured. In order to achieve this, it is necessary to reduce the line width of the coil. As a result, the resistance value increases and the Q value may be deteriorated.
  • the terminals 11a, 11b, 12a, and 12b are formed on different surfaces from the first and second coils 11 and 12, the line width of the coils can be the same across the entire length, This is also advantageous in terms of communication characteristics.
  • the antenna module 1a forms all terminals 11a, 11b, 12a, and 12b on the second surface 10b of the printed circuit board 10, and only the arbitrary terminals according to the arrangement of the terminals on the electronic device side on the second surface. 10b may be formed.
  • the antenna module 1 a overlaps the terminals 11 a, 11 b, 12 a, and 12 b formed on the second surface 10 b of the printed circuit board 10 with the first and second coils 11 and 12. You may provide in the position which does not.
  • the printed circuit board 10 is provided with a protruding portion 16 on one side surface, and all the terminals 11a, 11b, 12a, and 12b are formed on the protruding portion 16. In this case, all the terminals 11a, 11b, 12a, and 12b are all connected through the through-hole 22 and the extraction coil 23 that face the second surface 10b.
  • the overhang portion 16 where the terminals 11a, 11b, 12a, and 12b are formed can be provided at any position according to the position of the connection terminal on the electronic device side, and the shape is also free. That is, according to the antenna module 1a shown in FIG. 12, the terminals 11a, 11b, 12a, and 12b of the antenna module 1a are arranged at optimum positions according to the positions of the connection terminals on the electronic device side and the connection terminals of other components. It is possible to increase the degree of freedom of arrangement design.
  • all terminals 11a, 11b, 12a, and 12b are formed on the overhanging portion 16 and are assembled at positions close to each other by being arranged in parallel.
  • the connection members with the terminals 11a, 11b, 12a, and 12b are not dispersed in the device casing, and space saving and assembly can be facilitated.
  • all the terminals 11a, 11b, 12a, and 12b are formed on the overhanging portion 16, and only arbitrary terminals are formed according to the arrangement of the terminals on the electronic device side. You may form in.
  • the antenna module 1a includes a first overhanging portion 16a in which the terminals 11a and 11b are formed, and a second overhanging portion 16b in which the terminals 12a and 12b are formed. May be.
  • connection terminals and other configurations on the electronic device side are separated.
  • Each terminal can be arranged according to the arrangement of the connection terminals of the members.
  • the antenna module 1a shown in FIG. By providing the overhang portion 16a and the second overhang portion 16b, the degree of freedom in arrangement can be increased.
  • the antenna module 1a is provided in the first overhanging portion 16a by separately providing the first overhanging portion 16a and the second overhanging portion 16b and bending them to an arbitrary height. It is also possible to change the height of each connection position between the terminals 11a and 11b and the terminals 12a and 12b provided on the second overhanging portion 16b. Further, the terminals 11a and 11b provided in the first overhanging portion 16a and the terminals 12a and 12b provided in the second overhanging portion 16b are mutually the first and second overhanging portions 16a and 16b. May be formed on the same surface side, or may be formed on different surface sides. When the terminal is formed on the first surface 10a side of the printed circuit board 10, a through hole 22 continuous with the extraction coil 23 is formed in the first overhanging portion 16a or the second overhanging portion 16b. It connects with the terminal of the surface 10a side.
  • connection between the first coil 11 and the terminals 11a and 11b and the connection between the second coil 12 and the terminals 12a and 12b are the same in that the through-hole 22 and the extraction coil 23 are used.
  • the antenna module 1a includes terminals 11a and 11b of the first coil 11, and terminals 12a and 12b of the second coil 12, and one coil on the second surface 10b, for example, You may form in the position which overlaps with the 2nd coil 12.
  • FIG. 14 Since the first coil 11 for RFID receives a weak magnetic field as compared with the second coil 12 for non-contact charging, terminals 11 a and 11 b are provided at positions overlapping the first coil 11. As a result, the coil surface may be blocked and communication characteristics may deteriorate. Therefore, by removing the terminals 11a and 11b from the position where they overlap with the first coil 11, it is possible to prevent deterioration of communication characteristics due to the overlap between the first coil 11 and the terminals 11a and 11b.
  • connection between the first coil 11 and the terminals 11a and 11b and the connection between the second coil 12 and the terminals 12a and 12b are the same in that the through-hole 22 and the extraction coil 23 are used.
  • the antenna module 1a includes the terminals 11a and 11b of the first coil 11 and the terminals 12a and 12b of the second coil 12 from the position shown in FIG. You may arrange
  • FIG. In other words, the overhanging portion 16 shown in FIG. 12 may be formed close to the second coil 12 side. In this way, by arranging all the terminals at positions that do not overlap with the first and second coils, each terminal can be prevented from blocking the coil surfaces of the first and second coils 11 and 12.
  • a first overhanging portion 16a in which the terminals 11a and 11b are formed and a second overhanging portion 16b in which the terminals 12a and 12b are formed may be provided.
  • projection part 16b can also be changed.
  • terminals 11a and 11b provided in the first overhanging portion 16a and the terminals 12a and 12b provided in the second overhanging portion 16b are mutually the first and second overhanging portions 16a and 15b. May be formed on the same surface side, or may be formed on different surface sides.
  • connection between the first coil 11 and the terminals 11a and 11b and the connection between the second coil 12 and the terminals 12a and 12b are the same in that the through-hole 22 and the extraction coil 23 are used.
  • the first coil 11 and the second coil 12 may be provided on different surfaces of the printed circuit board 10.
  • the first coil 11 for RFID is formed on the first surface 10a of the printed circuit board 10
  • the terminals 11a and 11b are formed on the second surface 10b.
  • the second coil 12 for non-contact charging may be formed on the second surface 10b
  • the terminals 12a and 12b may be formed on the first surface 10a.
  • the terminals 11a and 11b of the first coil 11 are formed at positions overlapping the first coil 11, and the terminals 12a and 12b of the second coil 12 are the second coils. 12 is formed at a position overlapping with 12.
  • connection between the first coil 11 and the terminals 11a and 11b and the connection between the second coil 12 and the terminals 12a and 12b are the same in that the through-hole 22 and the extraction coil 23 are used.
  • the first coil 11 and the second coil 12 are provided on different surfaces of the printed circuit board 10, and the terminals 11a, 11b, 12a, and 12b are formed at positions that overlap with one coil. May be.
  • the first coil 11 is formed on the first surface 10a of the printed circuit board 10
  • the second coil 12 is formed on the second surface 10b.
  • the terminal 11a is formed in the 1st surface 10a of the 1st coil 11 via the extraction coil 23 formed from the outer peripheral side edge part.
  • the first coil 11 is provided with a through hole 22 at an inner peripheral end, a lead coil 23 is formed from the through hole 22 to the second surface 10 b, and the through hole 22 is formed from the end of the lead coil 23.
  • the terminal 11b is formed on the first surface 10a.
  • Each of the terminals 11a and 11b is formed at a position overlapping the second coil 12 formed on the second surface 10b.
  • terminals 12 a and 12 b of the second coil 12 are formed at positions where the second coil 12 is superimposed on the first surface 10 a by the through hole 22 and the extraction coil 23. Further, the terminals 11 a, 11 b, 12 a, 12 b are provided in parallel along the outer edge of the printed circuit board 10.
  • the terminals 11a and 11b are formed at positions removed from the positions where they overlap with the first coil 11, so that the first coil 11 and the terminals 11a and 11b overlap. It is possible to prevent deterioration of communication characteristics due to the above.
  • the magnetic sheet 15 may be inserted into the first opening 13 and the second opening 14.
  • 1a antenna module 1a1, 1a2, 10 printed circuit board, 11 first coil, 11a, 11b, 12a, 12b terminal, 12 second coil, 13, 14 opening, 15 magnetic sheet, 15a, 15b region, 16 Overhang part, 16a first overhang part, 16b second overhang part, 22 through hole, 23 lead coil, 151, 152 part, 100 wireless communication system, 120 reader / writer, 121 antenna, 122 control board, 130 Mobile phone, 130a outer peripheral part, 131 housing, 132 memory module, 133 battery pack, 134 outer peripheral wall, 151, 152 part, 200 non-contact charging system, 220 charging device, 221 power transmission coil, 222 power transmission control board

Abstract

Provided is an antenna device that can achieve excellent communication characteristics while reducing the size of a housing of an electronic instrument when incorporated into the electronic instrument. This antenna device comprises: a printed wiring board (10) having a first coil (11) and a second coil (12) formed thereon; and a magnetic sheet (15) that draws-in magnetic fields to the first coil (11) and the second coil (12). The first coil (11) inductively couples with a reader/writer (120) by receiving a magnetic field sent out from the reader/writer (120), and supplies a signal to a memory module (132) incorporated in a mobile phone (130). The second coil (12) inductively couples with a power transmission coil (221) of a charging device (220) by receiving a magnetic field sent out from the power transmission coil (221), and supplies a charging current to a battery pack (133) incorporated in the mobile phone (130). The magnetic sheet (15) is layered on a position overlapping the printed wiring board (10).

Description

アンテナ装置、電子機器Antenna device, electronic equipment
　本発明は、電子機器に組み込まれ、発信器から発信される磁界を受けて通信可能となるアンテナ装置、及び、このアンテナ装置を組み込んだ電子機器に関する。
　本出願は、日本国において２０１１年１２月１３日に出願された日本特許出願番号特願２０１１－２７１９１９、及び日本国において２０１２年１１月１９日に出願された日本特許出願番号特願２０１２－２５２８５０を基礎として優先権を主張するものであり、これら出願は参照されることにより、本出願に援用される。 The present invention relates to an antenna device incorporated in an electronic device and capable of communicating by receiving a magnetic field transmitted from a transmitter, and an electronic device incorporating the antenna device.
This application includes Japanese Patent Application No. 2011-271919 filed on December 13, 2011 in Japan and Japanese Patent Application No. 2012-252850 filed on November 19, 2012 in Japan. On the basis of priority, and these applications are incorporated herein by reference.
　スマートフォンなどの高機能携帯型電子機器では、ＲＦＩＤ（Radio Frequency Identification）などの近距離無線通信機能が搭載されている（例えば、特許文献１）。また、最近、スマートフォンの電池寿命が短いため、頻繁に充電する必要があり、その煩雑さを軽減すべく、非接触充電機能が搭載されている。例えば、充電効率や電波法の関係で、１１０～２００ｋＨｚ程度の低周波数を使用するＱｉ（チー）規格の非接触充電機器がスマートフォンに搭載され出した。 High-performance portable electronic devices such as smartphones are equipped with short-range wireless communication functions such as RFID (Radio Frequency Identification) (for example, Patent Document 1). Moreover, recently, since the battery life of a smart phone is short, it is necessary to charge frequently, and the non-contact charging function is installed in order to reduce the complexity. For example, Qi (Qi) standard non-contact charging devices that use a low frequency of about 110 to 200 kHz have been installed in smartphones due to charging efficiency and radio wave law.
特開２００８－３５４６４号公報JP 2008-35464 A
　スマートフォンなどの高機能携帯型電子機器には、各種通信用アンテナやカメラモジュールなどが実装されており、新たに、非接触充電用アンテナも効率的な実装方法の提案が望まれている。また、高機能携帯型電子機器は、薄型化の要求もあり、より薄いアンテナモジュールの提案が望まれている。 High-performance portable electronic devices such as smartphones are equipped with various communication antennas and camera modules, and new proposals for efficient mounting methods for non-contact charging antennas are desired. In addition, high-functional portable electronic devices are also required to be thin, and a proposal for a thinner antenna module is desired.
　本発明は、このような実情に鑑みて提案されたものであり、電子機器に組み込んだ際に電子機器の筐体の小型化を図りつつ、近距離無線通信機能と非接触充電機能との両立を実現可能なアンテナ装置、及び、このアンテナ装置を組み込んだ電子機器を提供することを目的とする。 The present invention has been proposed in view of such a situation, and is compatible with a short-range wireless communication function and a non-contact charging function while reducing the size of the casing of the electronic device when incorporated in the electronic device. It is an object of the present invention to provide an antenna device capable of realizing the above and an electronic apparatus incorporating the antenna device.
　上述した課題を解決するため、本発明に係るアンテナ装置は、電子機器に組み込まれるアンテナ装置であって、第１のコイルと、第２のコイルとが形成されたプリント基板と、第１のコイルと第２のコイルとに磁界を引き込む磁性シートとを備え、第１のコイルは、発信器から発信される磁界を受けて発信器と誘導結合して、電子機器に組み込まれた記憶媒体に信号を供給し、第２のコイルは、充電装置の送電コイルから発信される磁界を受け送電コイルと誘導結合して、電子機器に組み込まれたバッテリに充電電流を供給し、磁性シートは、プリント基板に重畳した位置に積層されている。 In order to solve the above-described problems, an antenna device according to the present invention is an antenna device incorporated in an electronic device, and includes a printed circuit board on which a first coil and a second coil are formed, and a first coil. And a magnetic sheet that draws a magnetic field to the second coil, the first coil receives a magnetic field transmitted from the transmitter, inductively couples with the transmitter, and transmits a signal to a storage medium incorporated in the electronic device. The second coil receives a magnetic field transmitted from the power transmission coil of the charging device, inductively couples with the power transmission coil, supplies a charging current to a battery incorporated in the electronic device, and the magnetic sheet is a printed circuit board. It is laminated at the position superimposed on.
　また、本発明に係る通信装置は、記憶媒体と、バッテリと、第１のコイルと、第２のコイルとが形成されたプリント基板と、第１のコイルと第２のコイルとに磁界を引き込む磁性シートとを備え、第１のコイルは、発信器から発信される磁界を受け発信器と誘導結合して、電子機器に組み込まれた記憶媒体に信号を供給し、第２のコイルは、充電装置の送電コイルから発信される磁界を受け該送電コイルと誘導結合して、電子機器に組み込まれたバッテリに充電電流を供給し、磁性シートは、上記プリント基板に重畳した位置に積層されている。 In addition, the communication device according to the present invention draws a magnetic field into the storage medium, the battery, the printed circuit board on which the first coil and the second coil are formed, and the first coil and the second coil. The first coil receives a magnetic field transmitted from the transmitter, inductively couples with the transmitter, supplies a signal to a storage medium incorporated in the electronic device, and the second coil charges. A magnetic field transmitted from a power transmission coil of the apparatus is received and inductively coupled with the power transmission coil to supply a charging current to a battery incorporated in the electronic device, and the magnetic sheet is laminated at a position superimposed on the printed circuit board. .
　本発明は、近距離無線通信機能を実現する第１のコイルと、非接触充電機能を実現する第２のコイルとが同一のプリント基板上に形成されているので、電子機器に組み込んだ際に電子機器の筐体の小型化を図りつつ、一枚の基板で近距離無線通信機能と非接触充電機能との両方を実現することができる。 In the present invention, the first coil for realizing the short-range wireless communication function and the second coil for realizing the non-contact charging function are formed on the same printed circuit board. Both the short-range wireless communication function and the non-contact charging function can be realized with a single substrate while downsizing the casing of the electronic device.
図１（Ａ）及び図１（Ｂ）は、本発明が適用されたアンテナモジュールの構成について説明するための図である。1A and 1B are diagrams for explaining the configuration of an antenna module to which the present invention is applied. 図２は、アンテナモジュールにおけるプリント基板と磁性シートとの配置関係について説明するための図である。FIG. 2 is a diagram for explaining the positional relationship between the printed circuit board and the magnetic sheet in the antenna module. 図３は、アンテナモジュールにおける近距離無線通信機能について説明するための図である。FIG. 3 is a diagram for explaining the short-range wireless communication function in the antenna module. 図４は、アンテナモジュールにおける非接触充電機能について説明するための図である。FIG. 4 is a diagram for explaining a non-contact charging function in the antenna module. 図５（Ａ）及び図５（Ｂ）は、第１の変形例に係るアンテナモジュールにおけるプリント基板と磁性シートとの配置関係について説明するための図である。FIG. 5A and FIG. 5B are diagrams for explaining the positional relationship between the printed circuit board and the magnetic sheet in the antenna module according to the first modification. 図６（Ａ）及び図６（Ｂ）は、第２の変形例に係るアンテナモジュールにおけるプリント基板と磁性シートとの配置関係について説明するための図である。FIGS. 6A and 6B are diagrams for explaining the positional relationship between the printed circuit board and the magnetic sheet in the antenna module according to the second modification. 図７（Ａ）及び図７（Ｂ）は、第３の変形例に係るアンテナモジュールにおけるプリント基板と磁性シートとの配置関係について説明するための図である。FIG. 7A and FIG. 7B are diagrams for explaining the positional relationship between the printed circuit board and the magnetic sheet in the antenna module according to the third modification. 図８（Ａ）及び図８（Ｂ）は、第４の変形例に係るアンテナモジュールにおけるプリント基板と磁性シートとの配置関係について説明するための図である。FIG. 8A and FIG. 8B are diagrams for explaining the positional relationship between the printed board and the magnetic sheet in the antenna module according to the fourth modification. 図９（Ａ）及び図９（Ｂ）は、第５の変形例に係るアンテナモジュールにおけるプリント基板と磁性シートとの配置関係について説明するための図である。FIG. 9A and FIG. 9B are diagrams for explaining the positional relationship between the printed circuit board and the magnetic sheet in the antenna module according to the fifth modification. 図１０は、第６の変形例に係るアンテナモジュールにおけるプリント基板と磁性シートとの配置関係について説明するための図である。FIG. 10 is a diagram for explaining the positional relationship between the printed circuit board and the magnetic sheet in the antenna module according to the sixth modification. 図１１は、本発明が適用されたアンテナモジュールのさらに他の変形例を示す平面図である。FIG. 11 is a plan view showing still another modification of the antenna module to which the present invention is applied. 図１２は、本発明が適用されたアンテナモジュールのさらに他の変形例を示す平面図である。FIG. 12 is a plan view showing still another modification of the antenna module to which the present invention is applied. 図１３は、本発明が適用されたアンテナモジュールのさらに他の変形例を示す平面図である。FIG. 13 is a plan view showing still another modification of the antenna module to which the present invention is applied. 図１４は、本発明が適用されたアンテナモジュールのさらに他の変形例を示す平面図である。FIG. 14 is a plan view showing still another modification of the antenna module to which the present invention is applied. 図１５は、本発明が適用されたアンテナモジュールのさらに他の変形例を示す平面図である。FIG. 15 is a plan view showing still another modification of the antenna module to which the present invention is applied. 図１６は、本発明が適用されたアンテナモジュールのさらに他の変形例を示す平面図である。FIG. 16 is a plan view showing still another modification of the antenna module to which the present invention is applied. 図１７は、本発明が適用されたアンテナモジュールのさらに他の変形例を示す平面図である。FIG. 17 is a plan view showing still another modification of the antenna module to which the present invention is applied.
　以下、本発明を実施するための形態について、図面を参照しながら詳細に説明する。なお、本発明は、以下の実施形態のみに限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々の変更が可能であることは勿論である。 Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. It should be noted that the present invention is not limited to the following embodiments, and various modifications can be made without departing from the scope of the present invention.
　本発明が適用されたアンテナ装置は、電子機器に組み込まれるものであって、近距離無線通信機能と非接触充電機能との両方を実現するものである。具体的に、本発明が適用されたアンテナ装置であるアンテナモジュール１ａは、図１（Ａ）に示すような、プリント基板１０上に、近距離無線通信であるＲＦＩＤ（Radio Frequency Identification）用の第１のコイル１１と、例えばＱｉ規格の非接触充電機能の受電用の第２のコイル１２とが形成されたものである。 The antenna device to which the present invention is applied is incorporated in an electronic device and realizes both a short-range wireless communication function and a non-contact charging function. Specifically, an antenna module 1a, which is an antenna device to which the present invention is applied, has a RFID (Radio Frequency Identification) for short-range wireless communication on a printed circuit board 10 as shown in FIG. One coil 11 and a second coil 12 for receiving power of, for example, a Qi standard non-contact charging function are formed.
　第１のコイル１１には、その両方の端部に端子１１ａ、１１ｂがそれぞれ形成されている。 The terminal 11a, 11b is formed in the both ends of the 1st coil 11, respectively.
　また、第２のコイル１２には、その両方の端部に端子１２ａ、１２ｂがそれぞれ形成されている。 The second coil 12 has terminals 12a and 12b formed at both ends thereof.
　さらに、プリント基板１０には、第１のコイル１１の中心部分に第１の開口部１３が形成されており、第１のコイル１１と第２のコイル１２との間に第２の開口部１４が形成されている。 Further, a first opening 13 is formed in the central portion of the first coil 11 in the printed circuit board 10, and the second opening 14 is provided between the first coil 11 and the second coil 12. Is formed.
　また、アンテナモジュール１ａは、第１のコイル１１と上記第２のコイル１２とに磁界を引き込むため、例えば図１（Ｂ）に示すような磁性シート１５がプリント基板１０に重畳される。例えば、後述するように第１のコイル１１を電子機器の筐体外周部に配置した場合に、リーダライタからの磁界を効率よく第１のコイル１１に引き込むため、図２に示すようにして、磁性シート１５が第１の開口部１３及び第２の開口部１４に差し込まれる。具体的には、磁性シート１５を第１の開口部１３及び第２の開口部１４に差し込むことで、第１の開口部１３と第２の開口部１４との間においては、磁性シート１５が第１のコイル１１よりも、ＲＦＩＤの発信器である後述するリーダライタ１２０側に配置される。また、第１の開口部１３と第２の開口部１４との間以外においては、第１のコイル１１がリーダライタ１２０側に配置されるとともに第２のコイル１２が後述する非接触充電機能の充電装置２２０側に配置される。 Further, since the antenna module 1a draws a magnetic field into the first coil 11 and the second coil 12, for example, a magnetic sheet 15 as shown in FIG. For example, as will be described later, when the first coil 11 is disposed on the outer peripheral portion of the housing of the electronic device, in order to efficiently draw the magnetic field from the reader / writer into the first coil 11, as shown in FIG. The magnetic sheet 15 is inserted into the first opening 13 and the second opening 14. Specifically, by inserting the magnetic sheet 15 into the first opening 13 and the second opening 14, the magnetic sheet 15 is interposed between the first opening 13 and the second opening 14. It is arranged closer to the reader / writer 120, which will be described later, which is an RFID transmitter than the first coil 11. Further, except between the first opening 13 and the second opening 14, the first coil 11 is disposed on the reader / writer 120 side and the second coil 12 has a non-contact charging function described later. Arranged on the charging device 220 side.
　次に、第１のコイル１１による近距離無線通信機能について説明する。例えば図３に示すように、アンテナモジュール１ａは、例えば携帯電話機１３０の筐体１３１内部に組み込まれ、第１のコイル１１は、ＲＦＩＤ（Radio Frequency Identification）用の無線通信システム１００として使用される。 Next, the short-range wireless communication function by the first coil 11 will be described. For example, as shown in FIG. 3, the antenna module 1 a is incorporated, for example, inside the housing 131 of the mobile phone 130, and the first coil 11 is used as a radio communication system 100 for RFID (Radio Frequency Identification).
　無線通信システム１００は、リーダライタ１２０が、アンテナモジュール１ａとともに携帯電話機１３０に組み込まれたメモリモジュール１３２に対してアクセスするものである。ここで、第１のコイル１１とリーダライタ１２０とは、三次元直交座標系ｘｙｚのｘｙ平面において互いに対向するように配置されているものとする。 In the wireless communication system 100, the reader / writer 120 accesses the memory module 132 incorporated in the mobile phone 130 together with the antenna module 1a. Here, it is assumed that the first coil 11 and the reader / writer 120 are arranged to face each other in the xy plane of the three-dimensional orthogonal coordinate system xyz.
　リーダライタ１２０は、ｘｙ平面において互いに対向するアンテナモジュール１ａの第１のコイル１１に対して、ｚ軸方向に磁界を発信する発信器として機能し、具体的には、第１のコイル１１に向けて磁界を発信するアンテナ１２１と、メモリモジュール１３２と通信を行う制御基板１２２とを備える。 The reader / writer 120 functions as a transmitter that transmits a magnetic field in the z-axis direction to the first coils 11 of the antenna modules 1 a facing each other in the xy plane. Specifically, the reader / writer 120 is directed toward the first coil 11. An antenna 121 for transmitting a magnetic field and a control board 122 for communicating with the memory module 132.
　すなわち、リーダライタ１２０は、アンテナ１２１と電気的に接続された制御基板１２２が配設されている。この制御基板１２２には、一又は複数の集積回路チップ等の電子部品からなる制御回路が実装されている。この制御回路は、第１のコイル１１を介してメモリモジュール１３２から受信されたデータに基づいて、各種の処理を実行する。例えば、制御回路は、メモリモジュール１３２に対してデータを送信する場合、データを符号化し、符号化したデータに基づいて、所定の周波数（例えば、１３．５６ＭＨｚ）の搬送波を変調し、変調した変調信号を増幅し、増幅した変調信号でアンテナ１２１を駆動する。また、制御回路は、メモリモジュール１３２からデータを読み出す場合、アンテナ１２１で受信されたデータの変調信号を増幅し、増幅したデータの変調信号を復調し、復調したデータを復号する。なお、制御回路では、一般的なリーダライタで用いられる符号化方式及び変調方式が用いられ、例えば、マンチェスタ符号化方式やＡＳＫ（Amplitude Shift Keying）変調方式が用いられている。 That is, the reader / writer 120 is provided with a control board 122 electrically connected to the antenna 121. A control circuit made of electronic components such as one or a plurality of integrated circuit chips is mounted on the control board 122. The control circuit executes various processes based on data received from the memory module 132 via the first coil 11. For example, when transmitting data to the memory module 132, the control circuit encodes the data, modulates a carrier wave of a predetermined frequency (for example, 13.56 MHz) based on the encoded data, and modulates the modulation. The signal is amplified, and the antenna 121 is driven by the amplified modulation signal. When reading data from the memory module 132, the control circuit amplifies the modulation signal of the data received by the antenna 121, demodulates the modulation signal of the amplified data, and decodes the demodulated data. In the control circuit, a coding system and a modulation system used in a general reader / writer are used. For example, a Manchester coding system or an ASK (Amplitude Shift Keying) modulation system is used.
　アンテナモジュール１ａは、第１のコイル１１が、リーダライタ１２０から発信される磁界を受けリーダライタ１２０と誘導結合して、携帯電話機１３０に組み込まれた記憶媒体であるメモリモジュール１３２に信号を供給する。 In the antenna module 1 a, the first coil 11 receives a magnetic field transmitted from the reader / writer 120 and inductively couples with the reader / writer 120, and supplies a signal to the memory module 132 that is a storage medium incorporated in the mobile phone 130. .
　第１のコイル１１は、リーダライタ１２０から発信される磁界を受けると、リーダライタ１２０と誘導結合によって磁気的に結合され、変調された電磁波を受信して、端子１１ａ、１１ｂを介して受信信号をメモリモジュール１３２に供給する。 When the first coil 11 receives a magnetic field transmitted from the reader / writer 120, the first coil 11 is magnetically coupled to the reader / writer 120 by inductive coupling, receives the modulated electromagnetic wave, and receives a received signal via the terminals 11a and 11b. Is supplied to the memory module 132.
　メモリモジュール１３２は、第１のコイル１１に流れる電流により駆動し、リーダライタ１２０との間で通信を行う。具体的に、メモリモジュール１３２は、受信された変調信号を復調し、復調したデータを復号して、復号したデータを、当該メモリモジュール１３２が有する内部メモリに書き込む。また、メモリモジュール１３２は、リーダライタ１２０に送信するデータを内部メモリから読み出し、読み出したデータを符号化し、符号化したデータに基づいて搬送波を変調し、誘導結合によって磁気的に結合された第１のコイル１１を介して変調された電波をリーダライタ１２０に送信する。 The memory module 132 is driven by a current flowing through the first coil 11 and communicates with the reader / writer 120. Specifically, the memory module 132 demodulates the received modulation signal, decodes the demodulated data, and writes the decoded data to the internal memory of the memory module 132. The memory module 132 reads data to be transmitted to the reader / writer 120 from the internal memory, encodes the read data, modulates a carrier wave based on the encoded data, and is magnetically coupled by inductive coupling. The modulated radio wave is transmitted to the reader / writer 120 via the coil 11.
　次に、第２のコイル１２による非接触充電機能について説明する。例えば図４に示すように、第２のコイル１２は、例えばＱｉ規格の非接触充電システム２００として使用される。 Next, the non-contact charging function by the second coil 12 will be described. For example, as shown in FIG. 4, the second coil 12 is used as a Qi standard non-contact charging system 200, for example.
　非接触充電システム２００は、アンテナモジュール１ａの第２のコイル１２と接続されたバッテリパック１３３に対して、充電装置２２０により充電を行うものである。ここで、アンテナモジュール１ａの第２のコイル１２と充電装置２２０の送電コイル２２１とは、上述した第１のコイル１１とリーダライタ１２０との位置関係と同様に、三次元直交座標系ｘｙｚのｘｙ平面において互いに対向するように配置されているものとする。 The non-contact charging system 200 charges the battery pack 133 connected to the second coil 12 of the antenna module 1a by the charging device 220. Here, the second coil 12 of the antenna module 1a and the power transmission coil 221 of the charging device 220 are similar to the positional relationship between the first coil 11 and the reader / writer 120 described above, and xy of the three-dimensional orthogonal coordinate system xyz. It is assumed that they are arranged to face each other on a plane.
　充電装置２２０は、ｘｙ平面において互いに対向するアンテナモジュール１ａの第２のコイル１２に対して、ｚ軸方向に磁界を発信する送電手段として機能し、具体的には、第２のコイル１２に向けて磁界を発信する送電コイル２２１と、送電コイル２２１を介して誘導結合された第２のコイル１２への電力の供給を制御する送電制御基板２２２とを備える。 The charging device 220 functions as a power transmission unit that transmits a magnetic field in the z-axis direction to the second coils 12 of the antenna module 1a facing each other in the xy plane, and specifically, toward the second coil 12. A power transmission coil 221 that transmits a magnetic field, and a power transmission control board 222 that controls supply of power to the second coil 12 that is inductively coupled via the power transmission coil 221.
　すなわち、充電装置２２０は、送電コイル２２１と電気的に接続された送電制御基板２２２が配設されている。この送電制御基板２２２には、一又は複数の集積回路チップ等の電子部品からなる制御回路が実装されている。この制御回路は、送電コイル２２１と誘導結合された第２のコイル１２に充電電流を供給する。具体的に、送電制御基板２２２は、所定の周波数例えば、１１０ＫＨｚの比較的低周波数の送電電流により送電コイル２２１を駆動する。 That is, the charging device 220 is provided with a power transmission control board 222 that is electrically connected to the power transmission coil 221. On the power transmission control board 222, a control circuit made of electronic components such as one or a plurality of integrated circuit chips is mounted. This control circuit supplies a charging current to the second coil 12 that is inductively coupled to the power transmission coil 221. Specifically, the power transmission control board 222 drives the power transmission coil 221 with a power transmission current having a predetermined frequency, for example, a relatively low frequency of 110 KHz.
　アンテナモジュール１ａは、上述したように、携帯電話機１３０の筐体１３１内部に組み込まれ、第２のコイル１２が、送電コイル２２１から発信される磁界を受け送電コイル２２１と誘導結合して、携帯電話機１３０に組み込まれたバッテリパック１３３に受電した電流を供給する。 As described above, the antenna module 1a is incorporated in the housing 131 of the mobile phone 130, and the second coil 12 receives the magnetic field transmitted from the power transmission coil 221 and inductively couples with the power transmission coil 221 to The received current is supplied to the battery pack 133 incorporated in 130.
　第２のコイル１２は、充電装置２２０から発信される磁界を受けると、充電装置２２０と誘導結合によって磁気的に結合され、変調された電磁波を受電して、端子１２ａ、１２ｂを介して充電電流をバッテリパック１３３に供給する。 When the second coil 12 receives a magnetic field transmitted from the charging device 220, the second coil 12 is magnetically coupled to the charging device 220 by inductive coupling, receives the modulated electromagnetic wave, and receives a charging current via the terminals 12a and 12b. Is supplied to the battery pack 133.
　バッテリパック１３３は、第２のコイル１２に流れる充電電流に応じた充電電圧を、当該バッテリパック１３３内部のバッテリセルに印加する。 The battery pack 133 applies a charging voltage corresponding to the charging current flowing through the second coil 12 to the battery cells inside the battery pack 133.
　以上のように、アンテナモジュール１ａは、近距離無線通信機能を実現する第１のコイル１１と、非接触充電機能を実現する第２のコイル１２とが同一のプリント基板１０の同一平面上に形成されているので、電子機器である携帯電話機１３０に組み込んだ際に筐体１３１の小型化を図りつつ、近距離無線通信機能と非接触充電機能との両立を実現することができる。 As described above, in the antenna module 1a, the first coil 11 that realizes the short-range wireless communication function and the second coil 12 that realizes the non-contact charging function are formed on the same plane of the same printed circuit board 10. Therefore, it is possible to realize both the short-range wireless communication function and the non-contact charging function while reducing the size of the housing 131 when incorporated in the mobile phone 130 which is an electronic device.
　また、磁性シート１５は、リーダライタ１２０及び充電装置２２０から発信された磁界を第１のコイル１１及び第２のコイル１２にそれぞれ効率よく引き込むように、プリント基板１０に対して重畳される。特に、磁性シート１５は、上述したように第１の開口部１３及び第２の開口部１４に差し込まれることで、携帯電話機１３０の筐体１３１のスペースを効率よく利用しつつ、良好な近距離無線通信特性を実現することができる。 The magnetic sheet 15 is superimposed on the printed circuit board 10 so as to efficiently draw the magnetic fields transmitted from the reader / writer 120 and the charging device 220 into the first coil 11 and the second coil 12, respectively. In particular, the magnetic sheet 15 is inserted into the first opening 13 and the second opening 14 as described above, so that the space of the casing 131 of the mobile phone 130 can be efficiently used and a good short distance can be obtained. Wireless communication characteristics can be realized.
　具体的には、磁性シート１５をプリント基板１０に差し込むことで、第１の開口部１３と第２の開口部１４との間においては、磁性シート１５を第１のコイル１１よりも、リーダライタ１２０側に配置する。また、第１の開口部１３と第２の開口部１４との間以外においては、第１のコイル１１をリーダライタ１２０側に配置されるとともに第２のコイル１２を充電装置２２０側に配置する。 Specifically, by inserting the magnetic sheet 15 into the printed circuit board 10, the magnetic sheet 15 is placed between the first opening 13 and the second opening 14 more than the first coil 11. It is arranged on the 120 side. Further, except between the first opening 13 and the second opening 14, the first coil 11 is disposed on the reader / writer 120 side and the second coil 12 is disposed on the charging device 220 side. .
　このような配置条件は、一枚の磁性シート１５を第１の開口部１３及び第２の開口部１４に差し込むことで容易に実現することができる。さらに、アンテナモジュール１ａは、次の理由から良好な通信特性と充電特性を得ることができる。 Such an arrangement condition can be easily realized by inserting one magnetic sheet 15 into the first opening 13 and the second opening 14. Furthermore, the antenna module 1a can obtain good communication characteristics and charging characteristics for the following reasons.
　すなわち、近距離無線通信機能を実現する第１のコイル１１は、特に、リーダライタ１２０に対向した携帯電話機１３０の筐体面によって配向された磁束が磁性シート１５によって第１の開口部１３にガイドされ、良好な通信特性が得られる。一方、非接触給電機能を実現する第２のコイル１２は、比較的大きな電流が流れるので大きなサイズが望ましく、このため、筐体１３１内に金属板と重畳した位置に配置する必要性が生じる。このような必要性があるにもかかわらず、第２のコイル１２は、磁性シート１５が重畳されることで、携帯電話機１３０内部に実装されている金属板の影響によって磁束を跳ね返すことを防止し、バッテリパック１３３等の金属を有する部品の上に設置することができる。したがって、第２のコイル１２は、磁性シート１５が重畳されることで、良好な充電特性と配置の自由度との両立を図ることができる。 That is, in the first coil 11 that realizes the short-range wireless communication function, in particular, the magnetic flux oriented by the casing surface of the mobile phone 130 facing the reader / writer 120 is guided to the first opening 13 by the magnetic sheet 15. Good communication characteristics can be obtained. On the other hand, the second coil 12 that realizes the non-contact power feeding function preferably has a large size because a relatively large current flows. Therefore, it is necessary to arrange the second coil 12 at a position overlapping the metal plate in the housing 131. Despite this necessity, the second coil 12 prevents the magnetic flux from rebounding due to the influence of the metal plate mounted inside the mobile phone 130 by the magnetic sheet 15 being superimposed. The battery pack 133 can be installed on a metal-containing component. Therefore, the 2nd coil 12 can aim at coexistence with a favorable charging characteristic and the freedom degree of arrangement | positioning, when the magnetic sheet 15 is superimposed.
　例えば、第１の変形例として、図５（Ａ）及び図５（Ｂ）に示すように、アンテナモジュール１ａが磁界を受ける面１ａ１と反対側の面１ａ２に金属部材、例えばバッテリパック１３３が配置している場合、携帯電話機１３０の筐体１３１の外周壁１３４近傍の外周部１３０ａでは、リーダライタ１２０からｚ軸方向に向いて発信される磁界がｘｙ面方向に配向される。このようにしてｘｙ面方向に配向された磁界Ｂを効率よく引き込むためには、外周部１３０ａから第１の開口部１３までは、第１のコイル１１が磁性シート１５よりもリーダライタ１２０側に位置し、第１の開口部１３から第２の開口部１４までは、磁性シート１５が第１のコイル１１よりもリーダライタ１２０側に位置するという条件を満たすことが好ましい。アンテナモジュール１ａは、上述したようにプリント基板１０に磁性シート１５を差し込むことで、この条件を満たしている。 For example, as a first modification, as shown in FIGS. 5A and 5B, a metal member, for example, a battery pack 133 is disposed on a surface 1a2 opposite to the surface 1a1 on which the antenna module 1a receives a magnetic field. In this case, in the outer peripheral portion 130a in the vicinity of the outer peripheral wall 134 of the casing 131 of the mobile phone 130, the magnetic field transmitted from the reader / writer 120 toward the z-axis direction is oriented in the xy plane direction. In order to efficiently draw the magnetic field B oriented in the xy plane direction in this way, the first coil 11 is closer to the reader / writer 120 side than the magnetic sheet 15 from the outer peripheral portion 130a to the first opening portion 13. It is preferable to satisfy the condition that the magnetic sheet 15 is positioned closer to the reader / writer 120 than the first coil 11 from the first opening 13 to the second opening 14. The antenna module 1a satisfies this condition by inserting the magnetic sheet 15 into the printed circuit board 10 as described above.
　また、第２の変形例として、図６（Ａ）及び図６（Ｂ）に示すように、磁性シート１５は、磁性シート１５の、第２のコイル１２と重畳する部分１５２の厚さが、第１のコイル１１と重畳する部分１５１の厚さよりも層厚であることが特に好ましい。 As a second modification, as shown in FIGS. 6 (A) and 6 (B), the magnetic sheet 15 has a thickness of a portion 152 of the magnetic sheet 15 that overlaps the second coil 12. It is particularly preferable that the layer thickness be greater than the thickness of the portion 151 overlapping the first coil 11.
　ここで、非接触充電では、数Ｗクラスの電力を伝送するために、第２のコイル１２は、第１のコイル１１に対して、比較的大きな電流が流れる。よって、磁性シート１５が役割を果たす磁気コアが飽和する可能性がある。その対策として、磁気コア、すなわち磁性シート１５の部分１５２を厚くして、磁気飽和を防止する対策が有効であり、上記の通りシートの厚みを調整することは好ましい。また、第１のコイル１１と重畳する部分１５１の厚さは、磁性シートを開口部１３、１４に差し込みやすくする観点や、開口部１３、１４をできるだけ小さくして物理的強度を確保する観点から、部分１５２の厚さよりも薄いことが好ましい。 Here, in non-contact charging, a relatively large current flows through the second coil 12 with respect to the first coil 11 in order to transmit several W class of power. Therefore, the magnetic core in which the magnetic sheet 15 plays a role may be saturated. As a countermeasure, it is effective to prevent the magnetic saturation by thickening the magnetic core, that is, the portion 152 of the magnetic sheet 15, and it is preferable to adjust the thickness of the sheet as described above. Further, the thickness of the portion 151 overlapping the first coil 11 is determined from the viewpoint of making it easy to insert the magnetic sheet into the openings 13 and 14 and from the viewpoint of ensuring the physical strength by making the openings 13 and 14 as small as possible. The thickness of the portion 152 is preferably smaller.
　なお、磁性シート１５の差し込み方向と直交する方向、すなわちｘ軸方向で規定される幅は必ずしも均一ではなくてもよい。例えば第３の変形例として、図７に示すように、磁性シート１５は、プリント基板１０に差し込んだ際に、外周部１３０ａから第１の開口部１３までの領域１５ａの幅をそれ以外の領域１５ｂの幅よりも幅広にしても良い。このような図７に示す場合は、磁性シート１５のうち、第１のコイル１１に重畳する部分を大きくとることができるので、通信特性が向上する点で特に好ましい。 In addition, the width | variety prescribed | regulated in the direction orthogonal to the insertion direction of the magnetic sheet 15, ie, an x-axis direction, does not necessarily need to be uniform. For example, as a third modification, as shown in FIG. 7, when the magnetic sheet 15 is inserted into the printed circuit board 10, the width of the region 15 a from the outer peripheral portion 130 a to the first opening portion 13 is set to the other region. It may be wider than the width of 15b. In the case shown in FIG. 7, the portion of the magnetic sheet 15 that overlaps the first coil 11 can be made large, which is particularly preferable in terms of improving communication characteristics.
　また、例えば第４の変形例として、図８に示すように、磁性シート１５は、プリント基板１０に差し込んだ際に、外周部１３０ａから第１の開口部１３までの領域１５ａの幅よりも、それ以外の領域１５ｂの幅を幅広にしても良い。さらに、第５の変形例として、図９に示すように、第１の開口部１３の幅よりも第２の開口部１４の幅を広くして、第１の開口部１３から第２の開口部１４に亘って挿入される磁性シート１５の幅を変化させるようにしてもよい。このような図８及び図９に示す場合、磁性シート１５は、開口部１４、開口部１３の順に差し込まれるので、差し込み易さの観点から好ましく、上述したように、第２のコイル１２と重畳する部分１５２の厚さが、第１のコイル１１と重畳する部分１５１の厚さよりも層厚である場合には特に好ましい。 Further, for example, as a fourth modification, as shown in FIG. 8, when the magnetic sheet 15 is inserted into the printed circuit board 10, the magnetic sheet 15 is larger than the width of the region 15 a from the outer peripheral portion 130 a to the first opening portion 13. Other regions 15b may be wider. Furthermore, as a fifth modification, as shown in FIG. 9, the width of the second opening 14 is made wider than the width of the first opening 13, and the second opening 14 extends from the first opening 13. You may make it change the width | variety of the magnetic sheet 15 inserted over the part 14. FIG. In the case shown in FIGS. 8 and 9, the magnetic sheet 15 is inserted in the order of the opening portion 14 and the opening portion 13, which is preferable from the viewpoint of ease of insertion, and overlaps with the second coil 12 as described above. It is particularly preferable when the thickness of the portion 152 to be formed is greater than the thickness of the portion 151 overlapping the first coil 11.
　また、上述したように、非接触充電では、数Ｗクラスの電力を伝送するために、第２のコイル１２は、第１のコイル１１に比べて大電流が流れるので、より低損失で磁束を引き込むことが要求される。このため、第２のコイル１２は、第１のコイル１１よりもコイルの外形面積が大きいことが好ましい。さらに、必ずしも第１のコイル１１と第２のコイル１２との幅、すなわちｘ軸方向で規定される幅は一致していなくてもよく、例えば第６の変形例として、図１０に示すように、第２のコイル１２の幅を第１のコイル１１の幅よりも広くしてもよい。 In addition, as described above, in non-contact charging, since the second coil 12 transmits a larger current than the first coil 11 in order to transmit several watts of power, the magnetic flux can be generated with lower loss. Retraction is required. For this reason, the second coil 12 preferably has a larger coil outer area than the first coil 11. Furthermore, the widths of the first coil 11 and the second coil 12, that is, the widths defined in the x-axis direction do not necessarily match. For example, as a sixth modification, as shown in FIG. The width of the second coil 12 may be wider than the width of the first coil 11.
　なお、第１のコイル１１と第２のコイル１２とは、必ずしもプリント基板１０の同一面上に形成されている場合に限らず、例えば、それぞれのコイルをプリント基板１０の上面、下面に独立して形成してもよい。 The first coil 11 and the second coil 12 are not necessarily formed on the same surface of the printed circuit board 10. For example, each coil is independent of the upper surface and the lower surface of the printed circuit board 10. May be formed.
　［その他の変形例］
　また、本発明が適用されたアンテナ装置であるアンテナモジュール１ａは、第１のコイル１１の両端に形成された端子１１ａ、１１ｂと、第２のコイル１２の両端に形成された端子１２ａ、１２ｂの少なくとも１つを、プリント基板１０の第１のコイル１１、第２のコイル１２が形成された面と反対側の面に形成してもよい。 [Other variations]
The antenna module 1a, which is an antenna device to which the present invention is applied, includes terminals 11a and 11b formed at both ends of the first coil 11, and terminals 12a and 12b formed at both ends of the second coil 12. You may form at least 1 in the surface on the opposite side to the surface in which the 1st coil 11 of the printed circuit board 10 and the 2nd coil 12 were formed.
　図１１に示すように、アンテナモジュール１ａは、プリント基板１０の第１の面１０ａに第１のコイル１１が形成され、通信時にリーダライタ１２０と対向される面である第２の面１０ｂに端子１１ａ、１１ｂが形成されている。端子１１ａは、第１の面１０ａに形成された第１のコイル１１の最外周側の端部と、スルーホール２２を介して電気的に連続されている。また、端子１１ｂは、第１の面１０ａに形成された第１のコイル１１の最内周側の端部と、スルーホール２２及び引出しコイル２３を介して電気的に連続されている。 As shown in FIG. 11, the antenna module 1a has a first coil 11 formed on the first surface 10a of the printed circuit board 10, and a terminal on the second surface 10b, which is a surface facing the reader / writer 120 during communication. 11a and 11b are formed. The terminal 11 a is electrically connected to the outermost end portion of the first coil 11 formed on the first surface 10 a through the through hole 22. Further, the terminal 11b is electrically connected to the innermost peripheral end of the first coil 11 formed on the first surface 10a through the through hole 22 and the extraction coil 23.
　同様に、アンテナモジュール１ａは、プリント基板１０の第１の面１０ａに第２のコイル１２が形成され、第２の面１０ｂに端子１２ａ、１２ｂが形成されている。端子１２ａは、第１の面１０ａに形成された第２のコイル１２の最外周側の端部と、スルーホール２２を介して電気的に連続されている。また、端子１２ｂは、第１の面１０ａに形成された第２のコイル１２の最内周側の端部と、スルーホール２２及び引出しコイル２３を介して電気的に連続されている。 Similarly, in the antenna module 1a, the second coil 12 is formed on the first surface 10a of the printed circuit board 10, and the terminals 12a and 12b are formed on the second surface 10b. The terminal 12 a is electrically connected to the outermost peripheral end of the second coil 12 formed on the first surface 10 a via the through hole 22. Further, the terminal 12b is electrically connected to the innermost peripheral end of the second coil 12 formed on the first surface 10a, through the through hole 22 and the extraction coil 23.
　各スルーホール２２は、メッキや導電ペーストの充填等により、内部に導電層が形成されている。また、各引出コイル２３は、第２の面１０ｂに臨むスルーホール２２と端子１１ｂ又は１２ｂとの間に亘って設けられ、例えば銅箔をパターニングすることによって形成される。 Each through hole 22 has a conductive layer formed therein by plating or filling with a conductive paste. Each extraction coil 23 is provided between the through hole 22 facing the second surface 10b and the terminal 11b or 12b, and is formed, for example, by patterning a copper foil.
　このように、アンテナモジュール１ａは、第１、第２のコイル１１，１２の各端子１１ａ、１１ｂ、１２ａ、１２ｂを、スルーホール２２を介して第２の面１０ｂに形成するとともに、引出コイル２３によって任意の場所に配置することができる。したがって、アンテナモジュール１ａは、電子機器に組み込む際に、電子機器側の端子との接続に最適な位置に各端子１１ａ、１１ｂ、１２ａ、１２ｂを形成することができる。 As described above, the antenna module 1a has the terminals 11a, 11b, 12a, and 12b of the first and second coils 11 and 12 formed on the second surface 10b through the through holes 22 and the extraction coil 23. Can be placed anywhere. Therefore, when the antenna module 1a is incorporated in an electronic device, the terminals 11a, 11b, 12a, and 12b can be formed at positions that are optimal for connection to the terminal on the electronic device side.
　図１１においては、両端子１１ａ、１１ｂは、第１のコイル１１と重畳する位置に並設されている。同様に、両端子１２ａ、１２ｂは、第２のコイル１２と重畳する位置に並設されている。また、全端子１１ａ、１１ｂ、１２ａ、１２ｂは、プリント基板１０の外側縁に沿って、互いに近接した位置に並列されている。 In FIG. 11, both terminals 11 a and 11 b are juxtaposed at positions overlapping the first coil 11. Similarly, both terminals 12 a and 12 b are arranged side by side at a position overlapping the second coil 12. Further, all the terminals 11 a, 11 b, 12 a, and 12 b are arranged in parallel at positions close to each other along the outer edge of the printed circuit board 10.
　このように、アンテナモジュール１ａは、第１、第２のコイル１１，１２の各端子１１ａ、１１ｂ、１２ａ、１２ｂが、互いに近接した位置に集合しているため、電子機器に組み込まれるときに、各端子１１ａ、１１ｂ、１２ａ、１２ｂとの接続部材が機器筐体内に分散することなく、省スペース化や組み立ての容易化を図ることができる。 Thus, the antenna module 1a has the terminals 11a, 11b, 12a, and 12b of the first and second coils 11 and 12 gathered at positions close to each other. Space-saving and easy assembly can be achieved without connecting members to the terminals 11a, 11b, 12a, and 12b in the device casing.
　また、第１、第２のコイル１１，１２と端子１１ａ、１１ｂ、１２ａ、１２ｂとをプリント基板１０の第１の面１０ａに形成する場合（図１（Ａ）参照）は、端子スペースを確保するためにコイルの線幅を狭める必要があり、その分、抵抗値が増加しＱ値の劣化を招くおそれがある。これに対し、端子１１ａ、１１ｂ、１２ａ、１２ｂを、第１、第２のコイル１１，１２と別の面に形成する場合、コイルの線幅を全長に亘って同じ幅とすることができ、通信特性上も有利となる。 Further, when the first and second coils 11 and 12 and the terminals 11a, 11b, 12a, and 12b are formed on the first surface 10a of the printed circuit board 10 (see FIG. 1A), a terminal space is secured. In order to achieve this, it is necessary to reduce the line width of the coil. As a result, the resistance value increases and the Q value may be deteriorated. On the other hand, when the terminals 11a, 11b, 12a, and 12b are formed on different surfaces from the first and second coils 11 and 12, the line width of the coils can be the same across the entire length, This is also advantageous in terms of communication characteristics.
　なお、アンテナモジュール１ａは、全端子１１ａ、１１ｂ、１２ａ、１２ｂをプリント基板１０の第２の面１０ｂに形成する他、電子機器側の端子の配置に応じて任意の端子のみを第２の面１０ｂに形成してもよい。 In addition, the antenna module 1a forms all terminals 11a, 11b, 12a, and 12b on the second surface 10b of the printed circuit board 10, and only the arbitrary terminals according to the arrangement of the terminals on the electronic device side on the second surface. 10b may be formed.
　また、図１２に示すように、アンテナモジュール１ａは、プリント基板１０の第２の面１０ｂに形成された各端子１１ａ、１１ｂ、１２ａ、１２ｂを、第１、第２のコイル１１，１２と重畳しない位置に設けてもよい。プリント基板１０は、一側面に張出部１６を設け、この張出部１６に全端子１１ａ、１１ｂ、１２ａ、１２ｂが形成されている。この場合、全端子１１ａ、１１ｂ、１２ａ、１２ｂは、いずれも第２の面１０ｂに臨むスルーホール２２と引出コイル２３を介して接続される。 In addition, as shown in FIG. 12, the antenna module 1 a overlaps the terminals 11 a, 11 b, 12 a, and 12 b formed on the second surface 10 b of the printed circuit board 10 with the first and second coils 11 and 12. You may provide in the position which does not. The printed circuit board 10 is provided with a protruding portion 16 on one side surface, and all the terminals 11a, 11b, 12a, and 12b are formed on the protruding portion 16. In this case, all the terminals 11a, 11b, 12a, and 12b are all connected through the through-hole 22 and the extraction coil 23 that face the second surface 10b.
　端子１１ａ、１１ｂ、１２ａ、１２ｂが形成される張出部１６は、電子機器側の接続端子の位置に応じて任意の位置に設けることができ、形状も自由である。すなわち、図１２に示すアンテナモジュール１ａによれば、電子機器側の接続端子や他の構成部材の接続端子の位置に応じてアンテナモジュール１ａの端子１１ａ、１１ｂ、１２ａ、１２ｂを最適な位置に配置することができ、配置デザインの自由度を大きくすることができる。 The overhang portion 16 where the terminals 11a, 11b, 12a, and 12b are formed can be provided at any position according to the position of the connection terminal on the electronic device side, and the shape is also free. That is, according to the antenna module 1a shown in FIG. 12, the terminals 11a, 11b, 12a, and 12b of the antenna module 1a are arranged at optimum positions according to the positions of the connection terminals on the electronic device side and the connection terminals of other components. It is possible to increase the degree of freedom of arrangement design.
　図１２に示すアンテナモジュール１ａにおいては、張出部１６に全端子１１ａ、１１ｂ、１２ａ、１２ｂを形成するとともに、並列させることにより互いに近接した位置に集合しているため、電子機器に組み込まれるときに、各端子１１ａ、１１ｂ、１２ａ、１２ｂとの接続部材が機器筐体内に分散することなく、省スペース化や組み立ての容易化を図ることができる。 In the antenna module 1a shown in FIG. 12, all terminals 11a, 11b, 12a, and 12b are formed on the overhanging portion 16 and are assembled at positions close to each other by being arranged in parallel. In addition, the connection members with the terminals 11a, 11b, 12a, and 12b are not dispersed in the device casing, and space saving and assembly can be facilitated.
　なお、図１２に示すアンテナモジュール１ａにおいても、全端子１１ａ、１１ｂ、１２ａ、１２ｂを張出部１６に形成する他、電子機器側の端子の配置に応じて任意の端子のみを張出部１６に形成してもよい。 In addition, in the antenna module 1a shown in FIG. 12, all the terminals 11a, 11b, 12a, and 12b are formed on the overhanging portion 16, and only arbitrary terminals are formed according to the arrangement of the terminals on the electronic device side. You may form in.
　また、図１３に示すように、アンテナモジュール１ａは、端子１１ａ及び端子１１ｂが形成された第１の張出部１６ａと、端子１２ａ及び１２ｂが形成された第２の張出部１６ｂとを設けてもよい。ＲＦＩＤ用の第１のコイル１１の端子１１ａ、１１ｂと、非接触充電機能の受電用の第２のコイル１２の端子１２ａ、１２ｂとを分離することにより、電子機器側の接続端子や他の構成部材の接続端子の配置に応じて各端子を配置することができる。 As shown in FIG. 13, the antenna module 1a includes a first overhanging portion 16a in which the terminals 11a and 11b are formed, and a second overhanging portion 16b in which the terminals 12a and 12b are formed. May be. By separating the terminals 11a and 11b of the first coil 11 for RFID and the terminals 12a and 12b of the second coil 12 for receiving power with a non-contact charging function, connection terminals and other configurations on the electronic device side are separated. Each terminal can be arranged according to the arrangement of the connection terminals of the members.
　すなわち、電子機器側のＲＦＩＤ用の端子の位置と非接触充電用の端子の位置とが分離している場合にも、図１３に示すアンテナモジュール１ａは、それぞれの端子位置に応じて第１の張出部１６ａと第２の張出部１６ｂを設けることで、配置の自由度を大きくすることができる。 That is, even when the position of the RFID terminal on the electronic device side and the position of the contactless charging terminal are separated, the antenna module 1a shown in FIG. By providing the overhang portion 16a and the second overhang portion 16b, the degree of freedom in arrangement can be increased.
　また、アンテナモジュール１ａは、第１の張出部１６ａと第２の張出部１６ｂとを別個に設けるとともに、それぞれ任意の高さに屈曲させることにより、第１の張出部１６ａに設けられた端子１１ａ、１１ｂと、第２の張出部１６ｂに設けられた端子１２ａ、１２ｂとの各接続位置の高さを変えることもできる。また、第１の張出部１６ａに設けられた端子１１ａ、１１ｂと、第２の張出部１６ｂに設けられた端子１２ａ、１２ｂとは、互いに第１、第２の張出部１６ａ、１６ｂの同一面側に形成されていてもよく、それぞれ異なる面側に形成されていてもよい。端子をプリント基板１０の第１の面１０ａ側に形成する場合、第１の張出部１６ａ又は第２の張出部１６ｂに、引出コイル２３と連続するスルーホール２２を形成し、第１の面１０ａ側の端子と接続させる。 The antenna module 1a is provided in the first overhanging portion 16a by separately providing the first overhanging portion 16a and the second overhanging portion 16b and bending them to an arbitrary height. It is also possible to change the height of each connection position between the terminals 11a and 11b and the terminals 12a and 12b provided on the second overhanging portion 16b. Further, the terminals 11a and 11b provided in the first overhanging portion 16a and the terminals 12a and 12b provided in the second overhanging portion 16b are mutually the first and second overhanging portions 16a and 16b. May be formed on the same surface side, or may be formed on different surface sides. When the terminal is formed on the first surface 10a side of the printed circuit board 10, a through hole 22 continuous with the extraction coil 23 is formed in the first overhanging portion 16a or the second overhanging portion 16b. It connects with the terminal of the surface 10a side.
　なお、第１のコイル１１と端子１１ａ、１１ｂとの接続、及び第２のコイル１２と端子１２ａ、１２ｂとの接続は、スルーホール２２及び引出コイル２３によって行う点は同様である。 The connection between the first coil 11 and the terminals 11a and 11b and the connection between the second coil 12 and the terminals 12a and 12b are the same in that the through-hole 22 and the extraction coil 23 are used.
　また、図１４に示すように、アンテナモジュール１ａは、第１のコイル１１の端子１１ａ、１１ｂ、及び第２のコイル１２の端子１２ａ、１２ｂを、第２の面１０ｂの、一方のコイル、例えば第２のコイル１２と重畳する位置に形成してもよい。ＲＦＩＤ用の第１のコイル１１は、非接触充電用の第２のコイル１２に比して受信する磁界が微弱であるため、第１のコイル１１と重畳する位置に端子１１ａ、１１ｂを設けることでコイル面を遮り通信特性が劣化するおそれがある。そこで、端子１１ａ、１１ｂを第１のコイル１１と重畳する位置から除くことにより、第１のコイル１１と端子１１ａ、１１ｂとが重畳することによる通信特性の劣化を防ぐことができる。 As shown in FIG. 14, the antenna module 1a includes terminals 11a and 11b of the first coil 11, and terminals 12a and 12b of the second coil 12, and one coil on the second surface 10b, for example, You may form in the position which overlaps with the 2nd coil 12. FIG. Since the first coil 11 for RFID receives a weak magnetic field as compared with the second coil 12 for non-contact charging, terminals 11 a and 11 b are provided at positions overlapping the first coil 11. As a result, the coil surface may be blocked and communication characteristics may deteriorate. Therefore, by removing the terminals 11a and 11b from the position where they overlap with the first coil 11, it is possible to prevent deterioration of communication characteristics due to the overlap between the first coil 11 and the terminals 11a and 11b.
　なお、第１のコイル１１と端子１１ａ、１１ｂとの接続、及び第２のコイル１２と端子１２ａ、１２ｂとの接続は、スルーホール２２及び引出コイル２３によって行う点は同様である。 The connection between the first coil 11 and the terminals 11a and 11b and the connection between the second coil 12 and the terminals 12a and 12b are the same in that the through-hole 22 and the extraction coil 23 are used.
　また、図１５に示すように、アンテナモジュール１ａは、第１のコイル１１の端子１１ａ、１１ｂ、及び第２のコイル１２の端子１２ａ、１２ｂを、図１４に示す位置から、さらに第２のコイル１２と重畳しない位置に設けた張出部１６側に配置してもよい。換言すれば、図１２に示す張出部１６を第２のコイル１２側に寄せて形成してもよい。このように、全端子を第１、第２のコイルと重畳しない位置に配置することで、各端子が第１、第２のコイル１１，１２のコイル面を遮ることを防止することができる。 Further, as shown in FIG. 15, the antenna module 1a includes the terminals 11a and 11b of the first coil 11 and the terminals 12a and 12b of the second coil 12 from the position shown in FIG. You may arrange | position to the overhang | projection part 16 side provided in the position which does not overlap with 12. FIG. In other words, the overhanging portion 16 shown in FIG. 12 may be formed close to the second coil 12 side. In this way, by arranging all the terminals at positions that do not overlap with the first and second coils, each terminal can be prevented from blocking the coil surfaces of the first and second coils 11 and 12.
　なお、図１５に示す構成においても、端子１１ａ及び端子１１ｂが形成された第１の張出部１６ａと、端子１２ａ及び１２ｂが形成された第２の張出部１６ｂとを設けてもよい。また、第１の張出部１６ａと第２の張出部１６ｂとを別個に設けるとともに、それぞれ任意の高さに屈曲させることにより、第１の張出部１６ａに設けられた端子１１ａ、１１ｂと、第２の張出部１６ｂに設けられた端子１２ａ、１２ｂとの各接続位置の高さを変えることもできる。また、第１の張出部１６ａに設けられた端子１１ａ、１１ｂと、第２の張出部１６ｂに設けられた端子１２ａ、１２ｂとは、互いに第１、第２の張出部１６ａ、１５ｂの同一面側に形成されていてもよく、それぞれ異なる面側に形成されていてもよい。 In the configuration shown in FIG. 15 as well, a first overhanging portion 16a in which the terminals 11a and 11b are formed and a second overhanging portion 16b in which the terminals 12a and 12b are formed may be provided. Moreover, while providing the 1st overhang | projection part 16a and the 2nd overhang | projection part 16b separately, and bending each to arbitrary height, the terminal 11a, 11b provided in the 1st overhang | projection part 16a And the height of each connection position with terminal 12a, 12b provided in the 2nd overhang | projection part 16b can also be changed. Further, the terminals 11a and 11b provided in the first overhanging portion 16a and the terminals 12a and 12b provided in the second overhanging portion 16b are mutually the first and second overhanging portions 16a and 15b. May be formed on the same surface side, or may be formed on different surface sides.
　なお、第１のコイル１１と端子１１ａ、１１ｂとの接続、及び第２のコイル１２と端子１２ａ、１２ｂとの接続は、スルーホール２２及び引出コイル２３によって行う点は同様である。 The connection between the first coil 11 and the terminals 11a and 11b and the connection between the second coil 12 and the terminals 12a and 12b are the same in that the through-hole 22 and the extraction coil 23 are used.
　また、アンテナモジュール１ａは、第１のコイル１１と第２のコイル１２とを互いにプリント基板１０の異なる面に設けてもよい。例えば、図１６に示すように、アンテナモジュール１ａは、プリント基板１０の第１の面１０ａにＲＦＩＤ用の第１のコイル１１を形成し、第２の面１０ｂに端子１１ａ、１１ｂを形成するとともに、第２の面１０ｂに非接触充電用の第２のコイル１２を形成し、第１の面１０ａに端子１２ａ、１２ｂを形成してもよい。 In the antenna module 1a, the first coil 11 and the second coil 12 may be provided on different surfaces of the printed circuit board 10. For example, as shown in FIG. 16, in the antenna module 1a, the first coil 11 for RFID is formed on the first surface 10a of the printed circuit board 10, and the terminals 11a and 11b are formed on the second surface 10b. Alternatively, the second coil 12 for non-contact charging may be formed on the second surface 10b, and the terminals 12a and 12b may be formed on the first surface 10a.
　図１６に示すアンテナモジュール１ａは、第１のコイル１１の端子１１ａ、１１ｂは、第１のコイル１１と重畳する位置に形成され、第２のコイル１２の端子１２ａ、１２ｂは、第２のコイル１２と重畳する位置に形成されている。 In the antenna module 1a shown in FIG. 16, the terminals 11a and 11b of the first coil 11 are formed at positions overlapping the first coil 11, and the terminals 12a and 12b of the second coil 12 are the second coils. 12 is formed at a position overlapping with 12.
　なお、第１のコイル１１と端子１１ａ、１１ｂとの接続、及び第２のコイル１２と端子１２ａ、１２ｂとの接続は、スルーホール２２及び引出コイル２３によって行う点は同様である。 The connection between the first coil 11 and the terminals 11a and 11b and the connection between the second coil 12 and the terminals 12a and 12b are the same in that the through-hole 22 and the extraction coil 23 are used.
　また、アンテナモジュール１ａは、第１のコイル１１と第２のコイル１２とを互いにプリント基板１０の異なる面に設けるとともに、端子１１ａ、１１ｂ、１２ａ、１２ｂを一方のコイルと重畳する位置に形成してもよい。例えば、図１７に示すように、プリント基板１０の第１の面１０ａに第１のコイル１１を形成し、第２の面１０ｂに第２のコイル１２を形成する。 In the antenna module 1a, the first coil 11 and the second coil 12 are provided on different surfaces of the printed circuit board 10, and the terminals 11a, 11b, 12a, and 12b are formed at positions that overlap with one coil. May be. For example, as shown in FIG. 17, the first coil 11 is formed on the first surface 10a of the printed circuit board 10, and the second coil 12 is formed on the second surface 10b.
　第１のコイル１１は、外周側端部から形成された引出コイル２３を介して、第１の面１０ａに端子１１ａが形成される。また第１のコイル１１は、内周側端部にスルーホール２２を設け、当該スルーホール２２から第２の面１０ｂに引出コイル２３を形成し、さらに引出コイル２３の端部からスルーホール２２を形成して、第１の面１０ａに、端子１１ｂが形成される。各端子１１ａ、１１ｂは、いずれも第２の面１０ｂに形成された第２のコイル１２と重畳する位置に形成される。 The terminal 11a is formed in the 1st surface 10a of the 1st coil 11 via the extraction coil 23 formed from the outer peripheral side edge part. The first coil 11 is provided with a through hole 22 at an inner peripheral end, a lead coil 23 is formed from the through hole 22 to the second surface 10 b, and the through hole 22 is formed from the end of the lead coil 23. Thus, the terminal 11b is formed on the first surface 10a. Each of the terminals 11a and 11b is formed at a position overlapping the second coil 12 formed on the second surface 10b.
　また、第２のコイル１２の端子１２ａ、１２ｂは、スルーホール２２及び引出コイル２３によって第１の面１０ａに、第２のコイル１２と重畳する位置に形成される。また、各端子１１ａ、１１ｂ、１２ａ、１２ｂは、プリント基板１０の外側縁に沿って並列して設けられている。 Further, the terminals 12 a and 12 b of the second coil 12 are formed at positions where the second coil 12 is superimposed on the first surface 10 a by the through hole 22 and the extraction coil 23. Further, the terminals 11 a, 11 b, 12 a, 12 b are provided in parallel along the outer edge of the printed circuit board 10.
　図１７に示すアンテナモジュール１ａにおいても、端子１１ａ、１１ｂが第１のコイル１１と重畳する位置から除かれた位置に形成されることにより、第１のコイル１１と端子１１ａ、１１ｂとが重畳することによる通信特性の劣化を防ぐことができる。 In the antenna module 1a shown in FIG. 17 as well, the terminals 11a and 11b are formed at positions removed from the positions where they overlap with the first coil 11, so that the first coil 11 and the terminals 11a and 11b overlap. It is possible to prevent deterioration of communication characteristics due to the above.
　なお、上述した図１１～図１７に示すアンテナモジュール１ａにおいても、磁性シート１５が第１の開口部１３及び第２の開口部１４に差し込むようにしてもよい。 In the antenna module 1a shown in FIGS. 11 to 17 described above, the magnetic sheet 15 may be inserted into the first opening 13 and the second opening 14.
　１ａ　アンテナモジュール、１ａ１、１ａ２　面、１０　プリント基板、１１　第１のコイル、１１ａ、１１ｂ、１２ａ、１２ｂ　端子、１２　第２のコイル、１３、１４　開口部、１５　磁性シート、１５ａ、１５ｂ　領域、１６　張出部、１６ａ　第１の張出部、１６ｂ　第２の張出部、２２　スルーホール、２３　引出コイル、１５１、１５２　部分、１００　無線通信システム、１２０　リーダライタ、１２１　アンテナ、１２２　制御基板、１３０　携帯電話機、１３０ａ　外周部、１３１　筐体、１３２　メモリモジュール、１３３　バッテリパック、１３４　外周壁、１５１、１５２　部分、２００　非接触充電システム、２２０　充電装置、２２１　送電コイル、２２２　送電制御基板 1a antenna module, 1a1, 1a2, 10 printed circuit board, 11 first coil, 11a, 11b, 12a, 12b terminal, 12 second coil, 13, 14 opening, 15 magnetic sheet, 15a, 15b region, 16 Overhang part, 16a first overhang part, 16b second overhang part, 22 through hole, 23 lead coil, 151, 152 part, 100 wireless communication system, 120 reader / writer, 121 antenna, 122 control board, 130 Mobile phone, 130a outer peripheral part, 131 housing, 132 memory module, 133 battery pack, 134 outer peripheral wall, 151, 152 part, 200 non-contact charging system, 220 charging device, 221 power transmission coil, 222 power transmission control board

Claims (9)

  1. 　電子機器に組み込まれるアンテナ装置において、
    　第１のコイルと、第２のコイルとが形成されたプリント基板と、
    　上記第１のコイルと上記第２のコイルとに磁界を引き込む磁性シートとを備え、
    　上記第１のコイルは、発信器から発信される磁界を受けて該発信器と誘導結合して、上記電子機器に組み込まれた記憶媒体に信号を供給し、
    　上記第２のコイルは、充電装置の送電コイルから発信される磁界を受け該送電コイルと誘導結合して、上記電子機器に組み込まれたバッテリに充電電流を供給し、
    　上記磁性シートは、上記プリント基板に形成された第１及び第２のコイルに重畳した位置に積層されているアンテナ装置。     In an antenna device incorporated in an electronic device,
    A printed circuit board on which a first coil and a second coil are formed;
    A magnetic sheet for drawing a magnetic field into the first coil and the second coil;
    The first coil receives a magnetic field transmitted from a transmitter, inductively couples with the transmitter, and supplies a signal to a storage medium incorporated in the electronic device,
    The second coil receives a magnetic field transmitted from a power transmission coil of the charging device, inductively couples with the power transmission coil, and supplies a charging current to a battery incorporated in the electronic device,
    The antenna device, wherein the magnetic sheet is laminated at a position superimposed on first and second coils formed on the printed circuit board.
  2. 　上記プリント基板は、上記第１のコイルの中心部分に位置する第１の開口部と、該第１のコイルと上記第２のコイルとの間に位置する第２の開口部とを有し、
    　上記磁性シートを、上記第１の開口部及び上記第２の開口部に差し込むことで、該第１の開口部と該第２の開口部との間においては、該磁性シートが上記第１のコイルより発信器側に配置され、該第１の開口部と該第２の開口部との間以外においては、該第１のコイルが該磁性シートより該発信器側に配置されるとともに上記第２のコイルが上記充電装置側に配置され、
    　上記第１のコイルは、上記電子機器筐体の外周部に近接して配置される請求項１記載のアンテナ装置。     The printed circuit board has a first opening located in a central portion of the first coil, and a second opening located between the first coil and the second coil,
    By inserting the magnetic sheet into the first opening and the second opening, the magnetic sheet is interposed between the first opening and the second opening. The first coil is disposed on the transmitter side of the magnetic sheet except for the area between the first opening and the second opening, and the first coil is disposed on the transmitter side of the magnetic sheet. 2 coils are arranged on the charging device side,
    The antenna device according to claim 1, wherein the first coil is disposed in proximity to an outer peripheral portion of the electronic device casing.
  3. 　上記磁性シートは、該磁性シートの、上記第２のコイルと重畳する部分の厚さが、上記第１のコイルと重畳する部分の厚さよりも層厚である請求項１記載のアンテナ装置。 2. The antenna device according to claim 1, wherein the magnetic sheet has a layer thickness of a portion of the magnetic sheet that overlaps the second coil that is greater than a thickness of the portion that overlaps the first coil.
  4. 　上記第１のコイルと上記第２のコイルは、それぞれ両端に信号又は電流を入出力する端子を備え、
    　上記端子のうち少なくとも１つは、上記プリント基板の上記第１のコイル及び上記第２のコイルが形成された面と反対側の面に形成されている請求項１～３のいずれか１項に記載のアンテナ装置。     Each of the first coil and the second coil includes terminals for inputting and outputting signals or currents at both ends,
    4. The terminal according to claim 1, wherein at least one of the terminals is formed on a surface of the printed board opposite to a surface on which the first coil and the second coil are formed. The antenna device described.
  5. 　上記端子のうち少なくとも１つが、上記第１のコイル及び上記第２のコイルと重畳しない位置に形成されている請求項４記載のアンテナ装置。 The antenna device according to claim 4, wherein at least one of the terminals is formed at a position not overlapping with the first coil and the second coil.
  6. 　記憶媒体と、
    　バッテリと、
    　第１のコイルと、第２のコイルとが形成されたプリント基板と、
    　上記第１のコイルと上記第２のコイルとに磁界を引き込む磁性シートとを備え、
    　上記第１のコイルは、発信器から発信される磁界を受け該発信器と誘導結合して、上記電子機器に組み込まれた記憶媒体に信号を供給し、
    　上記第２のコイルは、充電装置の送電コイルから発信される磁界を受け該送電コイルと誘導結合して、上記電子機器に組み込まれたバッテリに充電電流を供給し、
    　上記磁性シートは、上記プリント基板に重畳した位置に積層されている電子機器。     A storage medium;
    Battery,
    A printed circuit board on which a first coil and a second coil are formed;
    A magnetic sheet for drawing a magnetic field into the first coil and the second coil;
    The first coil receives a magnetic field transmitted from a transmitter, inductively couples with the transmitter, and supplies a signal to a storage medium incorporated in the electronic device,
    The second coil receives a magnetic field transmitted from a power transmission coil of the charging device, inductively couples with the power transmission coil, and supplies a charging current to a battery incorporated in the electronic device,
    An electronic apparatus in which the magnetic sheet is laminated at a position superimposed on the printed circuit board.
  7. 　上記プリント基板は、上記第１のコイルの中心部分に位置する第１の開口部と、該第１のコイルと上記第２のコイルとの間に位置する第２の開口部とを有し、
    　上記磁性シートを、上記第１の開口部及び上記第２の開口部に差し込むことで、該第１の開口部と該第２の開口部との間においては、該磁性シートが上記第１のコイルより発信器側に配置され、該第１の開口部と該第２の開口部との間以外においては、該第１のコイルが該発信器側に配置されるとともに上記第２のコイルが上記充電装置側に配置され、
    　上記第１のコイルは、上記電子機器筐体の外周部に近接して配置される請求項６記載の電子機器。     The printed circuit board has a first opening located in a central portion of the first coil, and a second opening located between the first coil and the second coil,
    By inserting the magnetic sheet into the first opening and the second opening, the magnetic sheet is interposed between the first opening and the second opening. The first coil is disposed on the transmitter side and the second coil is disposed at a position closer to the transmitter than the coil, except for between the first opening and the second opening. Arranged on the charging device side,
    The electronic device according to claim 6, wherein the first coil is disposed in proximity to an outer peripheral portion of the electronic device casing.
  8. 　上記第１のコイルと上記第２のコイルは、それぞれ両端に信号又は電流を入出力する端子を備え、
    　上記端子のうち少なくとも１つは、上記プリント基板の上記第１のコイル及び上記第２のコイルが形成された面と反対側の面に形成されている請求項６又は請求項７に記載の電子機器。     Each of the first coil and the second coil includes terminals for inputting and outputting signals or currents at both ends,
    8. The electron according to claim 6, wherein at least one of the terminals is formed on a surface of the printed circuit board opposite to a surface on which the first coil and the second coil are formed. machine.
  9. 　上記端子のうち少なくとも１つが、上記第１のコイル及び上記第２のコイルと重畳しない位置に形成されている請求項８記載の電子機器。 9. The electronic apparatus according to claim 8, wherein at least one of the terminals is formed at a position not overlapping with the first coil and the second coil.
PCT/JP2012/079917 2011-12-13 2012-11-19 Antenna device and electronic instrument WO2013088912A1 (en)

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