WO2012111430A1 - アンテナ装置および通信端末装置 - Google Patents
アンテナ装置および通信端末装置 Download PDFInfo
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- WO2012111430A1 WO2012111430A1 PCT/JP2012/052217 JP2012052217W WO2012111430A1 WO 2012111430 A1 WO2012111430 A1 WO 2012111430A1 JP 2012052217 W JP2012052217 W JP 2012052217W WO 2012111430 A1 WO2012111430 A1 WO 2012111430A1
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- WIPO (PCT)
- Prior art keywords
- antenna
- coil
- conductor
- planar conductor
- planar
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2283—Supports; Mounting means by structural association with other equipment or articles mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/40—Radiating elements coated with or embedded in protective material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- 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
- H01Q7/08—Ferrite rod or like elongated core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
- H01Q9/27—Spiral antennas
Definitions
- the present invention relates to an antenna device and a communication terminal device, and more particularly to an antenna device and a communication terminal device used in an HF band communication system.
- RFID Radio Frequency ⁇ ⁇ Identification
- NFC Near Field Communication
- a magnetic antenna is known as an antenna device for transmitting and receiving an HF band high-frequency signal.
- This magnetic antenna has a structure in which a coil conductor is wound around the surface of a magnetic core, as described in Patent Document 1 and Patent Document 2, for example.
- FIG. 1 is an exploded perspective view of the magnetic antenna disclosed in Patent Document 2.
- FIG. This magnetic antenna includes a plurality of magnetic layers 5 in which a coil 4 formed of an electrode layer 2 and a through-hole 1 is formed, an insulating layer 6 sandwiching the upper and lower surfaces thereof, and a laminated layer including a conductive layer 7 formed on the upper surface of the insulating layer. Is the body.
- the communication distance between antenna devices depends on the magnetic flux passing through the coil antenna. That is, in order to secure a certain communication distance between the antenna devices, it is necessary to increase the size of the coil antenna. However, the enlargement of the coil antenna hinders the miniaturization of the communication terminal device. On the other hand, when the size of the antenna is reduced, the effective area of the antenna is reduced, so that a sufficient communication distance cannot be ensured.
- the present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide an antenna device having a small occupation area and a small communication terminal device while ensuring a predetermined communication distance. .
- the antenna device includes a coil conductor wound around a winding axis, and a magnetic body disposed at least in a winding region of the coil conductor, and a surface through which the winding axis passes.
- a coil antenna mounted with a certain conductor opening surface as a mounting surface; and a booster antenna composed of a planar conductor functioning as a booster coupled to the coil antenna via an electromagnetic field, and a plane from the winding axis direction
- at least a part of the coil conductor and the edge of the planar conductor overlap each other.
- the communication terminal device of the present invention includes a coil conductor having a shape wound around a winding axis, and a magnetic body disposed at least inside a winding region of the coil conductor, and the winding axis is
- the antenna device of the present invention is composed of a coil antenna and a planar conductor, it is possible to realize an antenna device with a small occupied area while ensuring a predetermined communication distance, and thus a small communication terminal device. Can be realized.
- FIG. 1 is an exploded perspective view of a magnetic antenna disclosed in Patent Document 2.
- FIG. 2A is a perspective view of the antenna device 201 according to the first embodiment
- FIG. 2B is a plan view of the antenna device 201
- FIG. 2C is a front view of the antenna device 201.
- FIG. 3A is a perspective view showing respective directions of the current flowing through the coil conductor of the coil antenna 100 of the antenna device 201, the current flowing through the planar conductor 11, the magnetic field by the coil antenna 100, and the magnetic field by the planar conductor 11.
- FIG. 3B and FIG. 3C are diagrams showing the relationship between the current flowing through the planar conductor 11 and the magnetic flux generated thereby.
- FIG. 4A is a cross-sectional view of the communication terminal device 301 including the antenna device 201
- FIG. 4B is a plan perspective view of the communication terminal device 301
- FIG. 5 is an internal perspective view illustrating a usage state of the communication terminal device according to the second embodiment.
- FIG. 6 is an exploded perspective view of the antenna device 203 according to the third embodiment.
- FIG. 7A is a perspective view of the antenna device 204 of the fourth embodiment.
- FIG. 7B is a front view showing a state where the antenna device 204 is incorporated in a communication terminal device.
- FIGS. 8A and 8B are front views of the two antenna devices 205A and 205B of the fifth embodiment.
- FIG. 9A is a perspective view of the resonant booster antenna 110, and FIG.
- FIG. 9B is an exploded perspective view of the resonant booster antenna 110.
- FIG. 9C is a plan view of the resonant booster antenna 110.
- FIG. 10 is an equivalent circuit diagram of the resonant booster antenna 110.
- 11A to 11D are front sectional views of four communication terminal devices 306A, 306B, 306C, and 306D according to the sixth embodiment.
- FIG. 12A is an exploded perspective view of the resonant booster antenna 120 of the seventh embodiment
- FIG. 12B is a plan view of the resonant booster antenna 120.
- FIG. 13 is an equivalent circuit diagram of the resonant booster antenna 120.
- the antenna device and communication terminal device of each embodiment described below are used in an HF band RFID system such as NFC (Near Field Communication).
- NFC Near Field Communication
- FIG. 2A is a perspective view of the antenna device 201 of the first embodiment
- FIG. 2B is a plan view thereof
- FIG. 2C is a front view thereof.
- the antenna device 201 has a booster antenna and a coil antenna 100 made of a planar conductor 11.
- the coil antenna 100 has a structure in which a coil conductor 21 is wound around a magnetic core 20.
- the coil antenna 100 is surface-mounted on a substrate 10 made of a printed wiring board made of epoxy resin or the like with a conductor opening surface AP (see FIG. 2B) that is a surface through which the winding axis of the coil conductor 21 passes as a mounting surface. Has been.
- the coil antenna 100 has a structure in which a coil conductor 21 such as silver or copper is wound around a magnetic core 20 such as ferrite.
- the coil conductor 21 is wound around four side surfaces (peripheral surfaces) orthogonal to the two main surfaces (surfaces to be the conductor opening surfaces AP) of the rectangular parallelepiped magnetic core 20. That is, the winding axis of the coil conductor 21 extends in a direction perpendicular to the main surface of the magnetic core 20.
- the magnetic core 20 in the coil antenna 100 is composed of a resin body obtained by dispersing a ferrite sintered body or a ferrite material in a resin.
- the surface of the coil conductor 21 may further have a protective film made of an insulating material having a low magnetic permeability.
- the coil antenna 100 is configured as a so-called surface mount type coil antenna (chip type coil antenna), and two mounting terminals respectively connected to one end and the other end of the coil conductor 21 are provided on the back surface of the coil antenna 100. Electrodes (not shown) are provided. That is, the coil antenna 100 is configured to be surface-mountable on various substrates such as a printed wiring board.
- the planar conductor 11 is formed in a rectangular shape by a metal foil such as copper, silver, or aluminum, and is provided on the surface of the substrate 10 made of a printed wiring board.
- the base material 10 is not limited to a rigid printed wiring board, You may be comprised with flexible resin.
- the planar shape of the planar conductor is not limited to a rectangular shape, and may be any shape such as a circle or a rhombus.
- the planar conductor is not limited to a planar thin metal film, and may be a part of a metal article.
- the coil antenna 100 is disposed so that a part of the coil conductor 21 and the edge of the planar conductor 11 overlap in a plan view from the winding axis direction.
- a part of the coil conductor 21 of the coil antenna 100 protrudes by a dimension G1 in the area where the planar conductor 11 is formed.
- an interval from the outer surface of the planar conductor 11 to the lower end portion of the coil conductor 21 is spaced by a height G2.
- the smaller these dimensions G1 and G2 the higher the degree of coupling between the coil antenna 100 and the booster antenna, which is preferable.
- the booster antenna made of the planar conductor 11 is coupled to the coil antenna 100 via an electromagnetic field.
- FIG. 3A is a perspective view showing respective directions of the current flowing in the coil conductor 21 of the coil antenna 100 of the antenna device 201 and the current flowing in the planar conductor 11.
- FIGS. 3B and 3C are diagrams schematically showing the current flowing through the coil conductor 21 of the coil antenna 100, the current flowing through the planar conductor 11, and the state of magnetic flux generated by them.
- a magnetic flux ⁇ a ′ shown in FIG. 3B represents a magnetic flux passing through a position avoiding the planar conductor 11.
- FIG. 3C is a more equivalent view of the magnetic flux in FIG.
- a magnetic flux indicated by an arrow ⁇ c is a magnetic flux generated by combining the magnetic flux B generated around the planar conductor 11 and the magnetic flux ⁇ a ′ generated in the coil antenna 100.
- the reverse phenomenon occurs. That is, when the magnetic flux of the coil antenna on the communication partner side passes around the planar conductor 11 and links with the coil antenna 100, the current b flows through the planar conductor 11 and the current a flows through the coil conductor 21.
- FIG. 4A is a cross-sectional view of the communication terminal device 301 including the antenna device 201
- FIG. 4B is a plan perspective view thereof.
- the base material 10 is a printed wiring board, and the planar conductor 11 is formed on the surface of the base material 10.
- the coil antenna 100 is surface-mounted on the base material 10.
- the magnetic flux generated by the coil antenna 100 and the magnetic flux generated by the planar conductor 11 are combined to form a large magnetic flux in the direction of the arrow shown in FIG.
- the directivity of the antenna device 201 is directed in the direction of the arrow shown in FIG. That is, the antenna device 201 can obtain a high gain in the direction from the vicinity of the front end FE of the terminal housing 320 of the communication terminal device 301 to the back surface BS. Therefore, it is possible to communicate with high gain by holding the hand portion HP of the communication terminal device 301 and holding the tip portion over the communication partner.
- FIG. 5 is an internal perspective view illustrating a usage state of the communication terminal device according to the second embodiment.
- the communication terminal device 302 is a mobile phone terminal, for example.
- the terminal housing 320 of the communication terminal device 302 contains the main board 111 and the base material 10 as a sub board.
- the antenna device 202 is configured on the surface of the base material 10.
- the antenna device 202 is disposed on the back surface BS side of the terminal housing 320 together with the battery pack 112.
- the main board 111 is a large printed wiring board made of a hard resin board such as an epoxy resin, on which circuit elements constituting a drive circuit for a display device, a control circuit for a battery, and the like are mounted.
- the substrate 10 as a sub-substrate is made of a flexible resin substrate such as polyimide or liquid crystal polymer.
- circuit elements constituting a communication circuit (RF circuit) and the like are formed on the substrate 10. It is installed. Note that these circuit elements may be mounted on the main substrate 111 side.
- the communication circuit is composed of a wireless IC chip, for example, and is connected (powered) to the antenna device 202.
- the wireless IC chip and the antenna element 202 constitute an RFID.
- the communication terminal device 302 is held over a coil antenna 400 on the communication partner side such as a reader / writer, so that the antenna device 202 and the coil antenna 400 on the communication partner side are coupled mainly via an induction magnetic field, Predetermined information is transmitted and received and functions as an RFID.
- a coil antenna 400 on the communication partner side such as a reader / writer
- FIG. 6 is an exploded perspective view of the antenna device 203 according to the third embodiment.
- the antenna device 203 is configured by a laminated substrate in which base material layers 10a, 10b, 10c, 10d, and 10e made of a magnetic material are laminated.
- the base material layers 10a to 10d are provided with loop-shaped conductor patterns 21a to 21d, and input / output terminals 22a and 22d connected to the power feeding circuit are formed on one main surface of the base material layer 10e, respectively.
- a via conductor 21v is formed in the base material layers 10a to 10e, and one coil conductor is constituted by the conductor patterns 21a to 21d and the via conductor 21v.
- the planar conductor 11 is formed on the other main surface of the base material layer 10a.
- the planar conductor 11 is formed such that the edge thereof is disposed close to the coil opening of the coil conductor. This constitutes an antenna device in which the coil antenna and the planar conductor are integrated on the multilayer substrate.
- the base material layer 10a may be a nonmagnetic layer. If the base material layer 10a is a non-magnetic layer, the degree of coupling between the coil conductor and the planar conductor 11 (booster antenna) can be increased.
- FIG. 7A is a perspective view of the antenna device 204 of the fourth embodiment.
- FIG. 7B is a front view showing a state in which the antenna device 204 is incorporated in the communication terminal device 304.
- the antenna device 204 is disposed at a position near the tip FE of the terminal housing 320 of the communication terminal device 304. Therefore, stable communication can be performed by bringing the front end FE of the communication terminal device 304 close to (holding over) a communication partner such as an antenna of a reader / writer.
- the coil antenna 100 is disposed at the edge of the first planar conductor region 11A.
- the first planar conductor region 11A and the second planar conductor region 11B are each formed on a plane that intersects with a predetermined angle ⁇ .
- the directivity of the antenna device 204 is generated in an intermediate direction between the normal direction of the first planar conductor region 11A and the normal direction of the second planar conductor region 11B, and the communication distance in this direction can be increased.
- this antenna device 204 is arranged such that the second planar conductor region 11B of the antenna device 204 is on the front end FE side of the terminal housing 320 of the communication terminal device. Therefore, the antenna device 204 can obtain high sensitivity in a range from the front end FE direction of the terminal housing 320 to the back surface BS direction.
- the angle ⁇ formed by the first planar conductor region 11A and the second planar conductor region 11B is greater than 90 ° and greater than 135 °. Is preferably small.
- FIGS. 8A and 8B are front views of the two antenna devices 205A and 205B of the fifth embodiment. These antenna devices 205A and 205B according to the fifth embodiment are obtained by further including a resonant booster antenna 110 in addition to the antenna device 201 shown in the first embodiment.
- This resonant booster antenna corresponds to a “planar coil antenna” according to the present invention. The detailed configuration of the resonant booster antenna 110 will be described later.
- the resonant booster antenna 110 is magnetically coupled to the coil antenna 100 and functions as a booster antenna. In the example of FIG.
- the resonant booster antenna 110 is arranged in parallel to the planar conductor 11 and at a position closer to the coil antenna 100 than the center of the planar conductor 11. Therefore, as shown in FIG. 8 (A), it acts as an antenna device that is magnetically coupled to the magnetic flux ⁇ c by the coil antenna 100 and is directed in the direction of arrow A.
- the resonant booster antenna 110 is disposed in parallel to the planar conductor 11 and at a position away from the coil antenna 100 from the center of the planar conductor 11.
- the resonant booster antenna 110 is disposed at a position near the other side facing the one side of the planar conductor to which the coil antenna 100 is close. Therefore, as shown in FIG. 8 (B), it acts as an antenna device that is magnetically coupled to the magnetic flux ⁇ c by the coil antenna 100 and is directed in the direction of arrow A.
- FIG. 9A is a perspective view of the resonant booster antenna 110
- FIG. 9B is an exploded perspective view of the resonant booster antenna 110
- FIG. FIG. 9C is a plan view of the resonant booster antenna 110.
- the resonant booster antenna 110 includes a base material 30 and rectangular spiral coil conductors L1 and L2 formed on the base material 30.
- the rectangular spiral coil conductor L1 formed on the upper surface of the substrate 30 and the rectangular spiral coil L2 formed on the lower surface of the substrate 30 are formed so that the coil conductors face each other, and the winding direction Are formed in the opposite direction (the same direction in plan view from one side).
- FIG. 10 is an equivalent circuit diagram of the resonant booster antenna 110.
- inductors L1 and L2 correspond to the rectangular spiral coils L1 and L2. Since the rectangular spiral coils L1 and L2 face each other through the base material 30, a capacitance is generated between them.
- Capacitors C1 and C2 in FIG. 10 represent the capacitances.
- the resonant booster antenna 110 acts as an LC resonant circuit by the inductors L1 and L2 and the capacitors C1 and C2. This resonance frequency matches or is close to the carrier frequency of the communication signal.
- the resonant booster antenna improves communication sensitivity in the desired direction regardless of the mounting position of the coil antenna without newly providing a conductor plate. Can be made.
- 11A to 11D are front sectional views of four communication terminal devices 306A, 306B, 306C, and 306D according to the sixth embodiment.
- the main substrate 111, the coil antenna 100, the resonant booster antenna 110, and the like are built in the terminal housing 320 of the communication terminal apparatuses 306A, 306B, 306C, and 306D.
- the upper side of the figure of the terminal housing 320 is the bottom surface of the terminal housing, and the lower side is the top surface of the terminal housing (the surface with the display panel and the operation unit).
- a planar conductor 11 as a ground conductor is formed inside the main substrate 111.
- the coil antenna 100 and many other chip components are mounted on the main board 111.
- the resonant booster antenna 110 is attached to the inner surface of the terminal housing 320 or arranged along the inner surface.
- the resonant booster antenna 110 is disposed parallel to the planar conductor 11 and at a position away from the coil antenna 100 from the center of the planar conductor 11.
- the resonant booster antenna 110 is disposed on the mounting surface side of the coil antenna 100 with respect to the main substrate 111.
- the resonant booster antenna 110 is disposed on the opposite side of the main substrate 111 from the mounting surface of the coil antenna 100.
- resonance booster antenna 110 ⁇ / b> F is disposed on the mounting surface side of coil antenna 100 with respect to main substrate 111, and resonance is performed on the opposite side of coil antenna 100 mounting surface with respect to main substrate 111.
- a booster antenna 110B is arranged.
- resonant booster antenna 110 is arranged along two surfaces of terminal casing 320 (on the edge).
- the planar conductor 11 acts as a radiator
- the resonant booster antenna 110 also acts as a radiator. Since the resonance booster antenna 110 has high directivity in the direction of arrow A, the maximum communicable distance in the direction of arrow A can be increased.
- the resonant booster antenna 110 has high directivity in the direction of arrow B, so that the maximum communicable distance in the direction of arrow B can be increased. Further, since the planar conductor 11 also acts as a radiator, a gain in the direction opposite to the arrow B direction can be ensured.
- the planar conductor 11 acts as a radiator
- the resonant booster antennas 110F and 110B also act as a radiator.
- the resonant booster antenna 110F has high directivity in the direction of arrow A
- the resonant booster antenna 110B has high directivity in the direction of arrow B. Therefore, the maximum communicable distance in the direction of arrow A and B can be increased.
- the planar conductor 11 acts as a radiator
- the resonant booster antenna 110 also acts as a radiator. Since the resonance booster antenna 110 has high directivity in the direction of arrow C (direction of 45 degrees), the maximum communicable distance in the direction of arrow C can be increased.
- the seventh embodiment shows another example of a resonant booster antenna.
- 12A is an exploded perspective view of the resonant booster antenna 120 of the seventh embodiment
- FIG. 12B is a plan view of the resonant booster antenna 120
- FIG. 13 is an equivalent circuit diagram of the resonant booster antenna 120.
- the resonant booster antenna 120 includes a base material 30 and rectangular spiral coil conductors L1 and L2 formed on the base material 30.
- the rectangular spiral coil conductor L1 formed on the upper surface of the base material 30 and the rectangular spiral coil L2 formed on the lower surface of the base material 30 are formed so that the coil conductors face each other and are wound.
- the direction is formed in the opposite direction (the same direction in plan view from one side).
- the inner peripheral end of the coil conductor L1 is electrically connected to the inner peripheral end of the coil conductor L2 through a via conductor.
- a capacitor C1 (not shown) is connected between the outer peripheral end of the coil conductor L1 and the outer peripheral end of the coil conductor L2.
- the resonant booster antenna 120 functions as an LC resonant circuit by the inductors L1 and L2 and the capacitor C1. This resonance frequency matches or is close to the carrier frequency of the communication signal.
- planar conductor 11 may be provided inside the printed wiring board, for example.
- the winding axis of the coil conductor (reference numeral 21 (hereinafter the same) 21 shown in the first embodiment) is not necessarily perpendicular to the planar conductor (11).
- the coil antenna (100) only needs to be mounted using the conductor opening surface AP, which is a surface through which the winding axis of the coil conductor (21) passes, as a mounting surface.
- the booster antenna which consists of a planar conductor (11), and the coil antenna (100) should just couple
- the directivity of the antenna device (201) can be improved.
- good directivity and gain can be obtained if the winding axis of the coil conductor (21) and the normal line of the planar conductor (11) are within a range of ⁇ 45 degrees.
- the antenna device of the present invention is not limited to the HF band antenna device, but can be applied to antenna devices in other frequency bands such as the LF band and the UHF band.
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Abstract
Description
図2(A)は第1の実施形態のアンテナ装置201の斜視図、図2(B)はその平面図、図2(C)はその正面図である。
図5は第2の実施形態の通信端末装置の使用状態を示す内部透視斜視図である。この通信端末装置302はたとえば携帯電話端末である。通信端末装置302の端末筐体320にはメイン基板111と、サブ基板としての基材10が内蔵されている。アンテナ装置202は基材10の表面に構成されている。このアンテナ装置202はバッテリーパック112とともに端末筐体320の裏面BS側に配置されている。メイン基板111は、エポキシ樹脂等の硬質樹脂基板で構成された大型のプリント配線板であり、表示装置の駆動回路、バッテリーの制御回路等を構成する回路素子が搭載されている。サブ基板としての基材10は、ポリイミドや液晶ポリマ等の可撓性樹脂基板で構成されていて、アンテナ装置202の他、通信回路(RF回路)等を構成する回路素子が基材10上に搭載されている。なお、これらの回路素子はメイン基板111側に搭載されていてもよい。
図6は第3の実施形態のアンテナ装置203の分解斜視図である。磁性体からなる基材層10a,10b,10c,10d,10eが積層された積層基板によりアンテナ装置203が構成されている。基材層10a~10dにはループ状の導体パターン21a~21d、基材層10eの一方主面には給電回路に接続される入出力端子22a,22dがそれぞれ形成されている。基材層10a~10eにはビア導体21vが形成されていて、導体パターン21a~21dおよびビア導体21vによって一つのコイル導体が構成されている。
図7(A)は第4の実施形態のアンテナ装置204の斜視図である。図7(B)はそのアンテナ装置204を通信端末装置304に組み込んだ状態を示す正面図である。
図8(A)、図8(B)は第5の実施形態の二つのアンテナ装置205A,205Bの正面図である。これらの第5の実施形態のアンテナ装置205A,205Bは第1の実施形態で示したアンテナ装置201にさらに共振ブースターアンテナ110を備えたものである。この共振ブースターアンテナは、本発明に係る「平面コイルアンテナ」に相当する。共振ブースターアンテナ110の詳細な構成は後に示すが、この共振ブースターアンテナ110はコイルアンテナ100と磁界結合してブースターアンテナとして作用する。図8(A)の例では、共振ブースターアンテナ110は平面導体11に平行で、且つ平面導体11の中央よりコイルアンテナ100寄りの位置に配置されている。そのため、図8(A)に示すように、コイルアンテナ100による磁束φcと磁界結合して矢印A方向へ指向するアンテナ装置として作用する。
図11(A)~(D)は何れも第6の実施形態に係る4つの通信端末装置306A,306B,306C,306Dの正面断面図である。これらの図において、通信端末装置306A,306B,306C,306Dの端末筐体320には、メイン基板111、コイルアンテナ100、共振ブースターアンテナ110等が内蔵されている。端末筐体320の図の上方が端末筐体の底面、下方が端末筐体の天面(表示パネルや操作部のある面)である。
第7の実施形態では共振ブースターアンテナの別の例を示す。図12(A)は第7の実施形態の共振ブースターアンテナ120の分解斜視図、図12(B)は共振ブースターアンテナ120の平面図、図13は共振ブースターアンテナ120の等価回路図である。
以上に示した各実施形態では、平面導体11が基材10の外面に露出している例を示したが、平面導体11はたとえばプリント配線板の内部に設けられていてもよい。
FE…先端
HP…手元部
10…基材
10a,10b,10c,10d,10e…基材層
11…平面導体
11A…第1平面導体領域
11B…第2平面導体領域
20…磁性体コア
21…コイル導体
21a…導体パターン
21v…ビア導体
22a,22d…入出力端子接続用電極
30…基材
100…コイルアンテナ
110,120…共振ブースターアンテナ(平面コイルアンテナ)
111…メイン基板
112…バッテリーパック
201~204…アンテナ装置
301,302,304…通信端末装置
320…端末筐体
400…通信相手側のコイルアンテナ
Claims (5)
- 巻回軸回りに巻回された形状のコイル導体、および該コイル導体の巻回領域の少なくとも内部に配置された磁性体を有し、前記巻回軸が通る面である導体開口面を実装面として実装されたコイルアンテナと、
前記コイルアンテナと電磁界を介して結合するブースターとして機能する平面導体からなるブースターアンテナと、を有し、
前記巻回軸方向からの平面視で、前記コイル導体の一部と前記平面導体の縁端部とが少なくとも一部重なっている、アンテナ装置。 - 前記平面導体の少なくとも一方主面側に平面状コイル導体を有し、かつ前記平面導体と電磁界を介して結合する平面コイルアンテナをさらに有する、請求項1に記載のアンテナ装置。
- 前記平面導体はプリント配線板の外面または内部に設けられ、前記コイルアンテナは前記プリント配線板に表面実装されている、請求項1または2に記載のアンテナ装置。
- 巻回軸回りに巻回された形状のコイル導体、および該コイル導体の巻回領域の少なくとも内部に配置された磁性体を有し、前記巻回軸が通る面である導体開口面を実装面として実装されたコイルアンテナと、前記コイルアンテナと電磁界を介して結合するブースターとして機能する平面導体からなるブースターアンテナと、を有し、前記巻回軸方向からの平面視で、前記コイル導体の一部と前記平面導体の縁端部とが少なくとも一部重なっているアンテナ装置と、
前記アンテナ装置に接続された通信回路と、を備えた通信端末装置。 - 前記通信回路を収納する長手形状の筐体を備え、当該筐体の端部側に前記平面導体が位置するように前記アンテナ装置が配置された、請求項4に記載の通信端末装置。
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| CN2012900000716U CN203056103U (zh) | 2011-02-15 | 2012-02-01 | 天线装置以及通信终端装置 |
| JP2012534170A JP5131413B2 (ja) | 2011-02-15 | 2012-02-01 | アンテナ装置および通信端末装置 |
| KR1020127022384A KR101374302B1 (ko) | 2011-02-15 | 2012-02-01 | 안테나 장치 및 통신단말장치 |
| EP12742772.2A EP2523255B1 (en) | 2011-02-15 | 2012-02-01 | Antenna device and communication terminal device |
| US13/599,108 US9917366B2 (en) | 2011-02-15 | 2012-08-30 | Antenna device and communication terminal apparatus |
| US15/878,554 US9997834B1 (en) | 2011-02-15 | 2018-01-24 | Antenna device and communication terminal apparatus |
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| JP2011029315 | 2011-02-15 | ||
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| US13/599,108 Continuation US9917366B2 (en) | 2011-02-15 | 2012-08-30 | Antenna device and communication terminal apparatus |
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| WO2012111430A1 true WO2012111430A1 (ja) | 2012-08-23 |
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| US (2) | US9917366B2 (ja) |
| EP (1) | EP2523255B1 (ja) |
| JP (2) | JP5131413B2 (ja) |
| KR (1) | KR101374302B1 (ja) |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013055684A (ja) * | 2011-02-15 | 2013-03-21 | Murata Mfg Co Ltd | アンテナ装置および通信端末装置 |
| WO2014058072A1 (ja) * | 2012-10-12 | 2014-04-17 | 株式会社村田製作所 | Hf帯無線通信デバイス |
| JP5505571B2 (ja) * | 2012-04-27 | 2014-05-28 | 株式会社村田製作所 | コイルアンテナおよび通信端末装置 |
| JP2014107607A (ja) * | 2012-11-26 | 2014-06-09 | Murata Mfg Co Ltd | アンテナ装置およびこれを備えた通信端末装置 |
| WO2015182638A1 (ja) * | 2014-05-30 | 2015-12-03 | 株式会社村田製作所 | アンテナ装置および電子機器 |
| JP2016226033A (ja) * | 2016-08-29 | 2016-12-28 | 株式会社村田製作所 | アンテナ装置およびこれを備えた通信端末装置 |
| WO2017187862A1 (ja) * | 2016-04-28 | 2017-11-02 | 株式会社村田製作所 | アンテナ装置および電子機器 |
| WO2018088444A1 (ja) * | 2016-11-10 | 2018-05-17 | 株式会社村田製作所 | 通信端末 |
| CN115426056A (zh) * | 2022-10-21 | 2022-12-02 | 成都天锐星通科技有限公司 | 一种谐振抑制电路及电子产品 |
Families Citing this family (19)
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|---|---|---|---|---|
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002157559A (ja) * | 2000-11-17 | 2002-05-31 | Hitachi Maxell Ltd | 非接触通信式情報担体 |
| JP2005317674A (ja) | 2004-04-27 | 2005-11-10 | Nec Tokin Corp | アンテナ用コア、コイルアンテナ、時計、携帯電話機、電子装置 |
| JP2007019891A (ja) | 2005-07-07 | 2007-01-25 | Toda Kogyo Corp | 磁性体アンテナ |
| WO2007013338A1 (ja) * | 2005-07-29 | 2007-02-01 | Matsushita Electric Industrial Co., Ltd. | アンテナユニット及び携帯通信機器 |
| JP2009044715A (ja) * | 2007-07-18 | 2009-02-26 | Murata Mfg Co Ltd | 無線icデバイス及び電子機器 |
| JP2009182630A (ja) * | 2008-01-30 | 2009-08-13 | Dainippon Printing Co Ltd | ブースタアンテナ基板、ブースタアンテナ基板シート及び非接触式データキャリア装置 |
| JP2010109674A (ja) * | 2008-10-30 | 2010-05-13 | Panasonic Corp | アンテナ装置 |
| WO2010122888A1 (ja) * | 2009-04-21 | 2010-10-28 | 株式会社村田製作所 | アンテナ装置 |
| JP2011199343A (ja) * | 2010-03-17 | 2011-10-06 | Panasonic Corp | アンテナ装置およびそれを用いた携帯端末装置 |
| JP2011211611A (ja) * | 2010-03-30 | 2011-10-20 | Murata Mfg Co Ltd | アンテナモジュール、アンテナ装置及び移動体通信端末 |
| WO2012033031A1 (ja) * | 2010-09-07 | 2012-03-15 | 株式会社村田製作所 | アンテナ装置および通信端末装置 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03503467A (ja) * | 1988-02-04 | 1991-08-01 | ユニスキャン リミティド | 磁界集中装置 |
| JPH1125244A (ja) * | 1997-06-27 | 1999-01-29 | Toshiba Chem Corp | 非接触データキャリアパッケージ |
| JP3896965B2 (ja) * | 2002-01-17 | 2007-03-22 | 三菱マテリアル株式会社 | リーダ/ライタ用アンテナ及び該アンテナを備えたリーダ/ライタ |
| JP4232474B2 (ja) * | 2002-09-27 | 2009-03-04 | ソニー株式会社 | 通信機能付き電子機器 |
| JP2005005883A (ja) | 2003-06-10 | 2005-01-06 | Murata Mfg Co Ltd | 指向性アンテナ及びそのアンテナを用いた無線通信機並びにアンテナの指向性改善方法 |
| JP2007006123A (ja) | 2005-06-23 | 2007-01-11 | Kourin Giken:Kk | 携帯機器 |
| JP5612238B2 (ja) * | 2006-02-20 | 2014-10-22 | 株式会社スマート | 軸対称垂直磁界センサシステム |
| ATE507538T1 (de) * | 2006-06-01 | 2011-05-15 | Murata Manufacturing Co | Hochfrequenz-ic-anordnung und zusammengesetzte komponente für eine hochfrequenz-ic-anordnung |
| US9136600B2 (en) * | 2010-09-30 | 2015-09-15 | Murata Manufacturing Co., Ltd. | Antenna |
| JP4883125B2 (ja) * | 2009-04-03 | 2012-02-22 | 株式会社村田製作所 | アンテナ |
| JP2012108843A (ja) * | 2010-11-19 | 2012-06-07 | Toppan Printing Co Ltd | Rfidタグ |
| CN203056103U (zh) * | 2011-02-15 | 2013-07-10 | 株式会社村田制作所 | 天线装置以及通信终端装置 |
-
2012
- 2012-02-01 CN CN2012900000716U patent/CN203056103U/zh not_active Expired - Lifetime
- 2012-02-01 WO PCT/JP2012/052217 patent/WO2012111430A1/ja not_active Ceased
- 2012-02-01 KR KR1020127022384A patent/KR101374302B1/ko not_active Expired - Fee Related
- 2012-02-01 EP EP12742772.2A patent/EP2523255B1/en not_active Not-in-force
- 2012-02-01 JP JP2012534170A patent/JP5131413B2/ja active Active
- 2012-08-30 US US13/599,108 patent/US9917366B2/en active Active
- 2012-11-02 JP JP2012242388A patent/JP5234216B2/ja not_active Expired - Fee Related
-
2018
- 2018-01-24 US US15/878,554 patent/US9997834B1/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002157559A (ja) * | 2000-11-17 | 2002-05-31 | Hitachi Maxell Ltd | 非接触通信式情報担体 |
| JP2005317674A (ja) | 2004-04-27 | 2005-11-10 | Nec Tokin Corp | アンテナ用コア、コイルアンテナ、時計、携帯電話機、電子装置 |
| JP2007019891A (ja) | 2005-07-07 | 2007-01-25 | Toda Kogyo Corp | 磁性体アンテナ |
| WO2007013338A1 (ja) * | 2005-07-29 | 2007-02-01 | Matsushita Electric Industrial Co., Ltd. | アンテナユニット及び携帯通信機器 |
| JP2009044715A (ja) * | 2007-07-18 | 2009-02-26 | Murata Mfg Co Ltd | 無線icデバイス及び電子機器 |
| JP2009182630A (ja) * | 2008-01-30 | 2009-08-13 | Dainippon Printing Co Ltd | ブースタアンテナ基板、ブースタアンテナ基板シート及び非接触式データキャリア装置 |
| JP2010109674A (ja) * | 2008-10-30 | 2010-05-13 | Panasonic Corp | アンテナ装置 |
| WO2010122888A1 (ja) * | 2009-04-21 | 2010-10-28 | 株式会社村田製作所 | アンテナ装置 |
| JP2011199343A (ja) * | 2010-03-17 | 2011-10-06 | Panasonic Corp | アンテナ装置およびそれを用いた携帯端末装置 |
| JP2011211611A (ja) * | 2010-03-30 | 2011-10-20 | Murata Mfg Co Ltd | アンテナモジュール、アンテナ装置及び移動体通信端末 |
| WO2012033031A1 (ja) * | 2010-09-07 | 2012-03-15 | 株式会社村田製作所 | アンテナ装置および通信端末装置 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP2523255A4 |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013055684A (ja) * | 2011-02-15 | 2013-03-21 | Murata Mfg Co Ltd | アンテナ装置および通信端末装置 |
| JP5505571B2 (ja) * | 2012-04-27 | 2014-05-28 | 株式会社村田製作所 | コイルアンテナおよび通信端末装置 |
| WO2014058072A1 (ja) * | 2012-10-12 | 2014-04-17 | 株式会社村田製作所 | Hf帯無線通信デバイス |
| JP5672414B2 (ja) * | 2012-10-12 | 2015-02-18 | 株式会社村田製作所 | Hf帯無線通信デバイス |
| US9634714B2 (en) | 2012-10-12 | 2017-04-25 | Murata Manufacturing Co., Ltd. | HF-band wireless communication device |
| JP2014107607A (ja) * | 2012-11-26 | 2014-06-09 | Murata Mfg Co Ltd | アンテナ装置およびこれを備えた通信端末装置 |
| WO2015182638A1 (ja) * | 2014-05-30 | 2015-12-03 | 株式会社村田製作所 | アンテナ装置および電子機器 |
| US10164336B2 (en) | 2014-05-30 | 2018-12-25 | Murata Manufacturing Co., Ltd. | Antenna device and electronic apparatus |
| JP6075511B2 (ja) * | 2014-05-30 | 2017-02-08 | 株式会社村田製作所 | アンテナ装置および電子機器 |
| WO2017187862A1 (ja) * | 2016-04-28 | 2017-11-02 | 株式会社村田製作所 | アンテナ装置および電子機器 |
| JPWO2017187862A1 (ja) * | 2016-04-28 | 2018-07-05 | 株式会社村田製作所 | アンテナ装置および電子機器 |
| US10511350B2 (en) | 2016-04-28 | 2019-12-17 | Murata Manufacturing Co., Ltd. | Antenna device and electronic device |
| JP2016226033A (ja) * | 2016-08-29 | 2016-12-28 | 株式会社村田製作所 | アンテナ装置およびこれを備えた通信端末装置 |
| WO2018088444A1 (ja) * | 2016-11-10 | 2018-05-17 | 株式会社村田製作所 | 通信端末 |
| CN115426056A (zh) * | 2022-10-21 | 2022-12-02 | 成都天锐星通科技有限公司 | 一种谐振抑制电路及电子产品 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20180151954A1 (en) | 2018-05-31 |
| CN203056103U (zh) | 2013-07-10 |
| JP5131413B2 (ja) | 2013-01-30 |
| US9917366B2 (en) | 2018-03-13 |
| JP2013055684A (ja) | 2013-03-21 |
| JP5234216B2 (ja) | 2013-07-10 |
| JPWO2012111430A1 (ja) | 2014-07-03 |
| US20130229319A1 (en) | 2013-09-05 |
| KR101374302B1 (ko) | 2014-03-14 |
| EP2523255B1 (en) | 2014-12-31 |
| KR20120123486A (ko) | 2012-11-08 |
| EP2523255A1 (en) | 2012-11-14 |
| US9997834B1 (en) | 2018-06-12 |
| EP2523255A4 (en) | 2013-10-30 |
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