WO2013115147A1 - 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
- Publication number
- WO2013115147A1 WO2013115147A1 PCT/JP2013/051810 JP2013051810W WO2013115147A1 WO 2013115147 A1 WO2013115147 A1 WO 2013115147A1 JP 2013051810 W JP2013051810 W JP 2013051810W WO 2013115147 A1 WO2013115147 A1 WO 2013115147A1
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- WO
- WIPO (PCT)
- Prior art keywords
- ground conductor
- coil
- printed wiring
- wiring board
- feeding coil
- 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.)
- Ceased
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
-
- 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
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
- G06K19/07777—Antenna details the antenna being of the inductive type
- G06K19/07779—Antenna details the antenna being of the inductive type the inductive antenna being a coil
-
- 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
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
- G06K19/07794—Antenna details the record carrier comprising a booster or auxiliary antenna in addition to the antenna connected directly to the integrated circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2216—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in interrogator/reader equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
Definitions
- the present invention relates to an antenna device and a communication terminal device used in a communication system of HF band or UHF band.
- RFID Radio Frequency Identification
- a reader / writer and an RFID tag are wirelessly communicated in a non-contact manner, and a high-frequency signal is transmitted and received between these devices.
- Each of the reader / writer and the RFID tag includes a wireless IC chip for processing a high-frequency signal and an antenna element for transmitting and receiving the high-frequency signal.
- an antenna element for example, in the case of an HF band RFID system using the 13.56 MHz band, a coiled antenna is used, and the antenna coil on the reader / writer side and the antenna coil on the tag side are coupled via an induction magnetic field.
- FIG. 6 is a longitudinal sectional view of the reader / writer 1 for a non-contact IC card described in Patent Document 1.
- the non-contact IC card reader / writer 1 includes an antenna substrate having a loop antenna and a capacitor provided on the upper surface, a control substrate 6 having a transmission / reception circuit and a chip-type coil 5 provided on the upper surface, an antenna substrate 4 and a control substrate 6. And a magnetic material sheet 10 and an insulating case 15.
- the magnetic sheet 10 is disposed away from the top of the chip coil 5 in order to form the opening 11 above the chip coil 5 provided on the control board 6.
- the chip type coil (feeding coil) 5 is coupled to the loop antenna of the antenna substrate 4 via an induction magnetic field as indicated by a magnetic flux ⁇ 1.
- the antenna substrate 4 is magnetically coupled to the IC card 20 as indicated by the magnetic flux ⁇ 2.
- An object of the present invention is to provide a small antenna device that can obtain stable communication characteristics and can be accommodated in a limited space, and a communication terminal device including the antenna device.
- the antenna device of the present invention A printed wiring board having a ground conductor provided on a surface layer or an inner layer of the insulating base material, with an insulating base material as a base body; A power supply coil patterned in a coil shape on a surface layer or an inner layer of the printed wiring board, The ground conductor has, in part, a loop coupling portion having a first end and a second end, The feeding coil is coupled to the loop coupling portion of the ground conductor via an electromagnetic field.
- the ground conductor of the printed wiring board is used as a radiator for transmitting and receiving radio signals, and the feeding coil is provided on the printed wiring board, the distance between the feeding coil and the radiator is large. There is no variation, and variations in the degree of electromagnetic field coupling between the feeding coil and the radiation plate are reduced.
- a capacitive element is provided between the first end and the second end.
- a resonance circuit is formed by the inductance component of the loop-shaped coupling portion of the ground conductor and the capacitance component of the chip capacitor, and the loop-shaped coupling portion acts as a resonator, and the resonance frequency is within the use frequency band (for example, HF).
- the efficiency can be improved and the maximum readable distance can be increased.
- the loop-shaped coupling portion is formed by a notch provided in the ground conductor. With this configuration, it is not necessary to independently provide a loop-shaped coupling portion with a special conductor pattern, and the size can be easily reduced.
- the coil opening of the feeding coil overlaps with the opening of the loop coupling portion.
- the feeding coil is a laminated coil formed by laminating a plurality of loop patterns, and the first end surface and the second end surface of the laminated coil are the first main surface side and the second end surface of the ground conductor. It is preferably located on the main surface side.
- the communication terminal device of the present invention A printed wiring board having a ground conductor provided on a surface layer or an inner layer of the insulating base material, with an insulating base material as a base body; On the surface layer or inner layer of the printed wiring board, a feeding coil patterned in a coil shape, A power feeding element mounted on the printed wiring board and connected to the power feeding coil; A housing for storing the printed wiring board, The ground conductor has, in part, a loop coupling portion having a first end and a second end, The feeding coil is coupled to the loop coupling portion of the ground conductor via an electromagnetic field.
- a small communication terminal device having a stable communication characteristic with a small variation in the degree of electromagnetic coupling between the feeding coil and the radiation plate is configured.
- the ground conductor of the printed wiring board is used as a radiator for transmitting and receiving radio signals, and the feeding coil is provided on the printed wiring board, so that the distance between the feeding coil and the radiator is large. There is no variation, and variation in the electromagnetic field coupling between the feeding coil and the radiator is small. Therefore, it is possible to realize a small antenna device and a communication terminal device having stable communication characteristics.
- FIG. 1A is a plan view of the antenna device and the communication terminal device of the first embodiment.
- FIG. 1B is a cross-sectional view of the antenna device and the communication terminal device of the first embodiment.
- FIG. 2 is a schematic perspective view of the antenna device according to the first embodiment.
- FIG. 3 is a schematic plan view of the antenna device according to the first embodiment.
- FIG. 4 is a diagram illustrating a state of current flowing through the power feeding coil 112 and the ground conductor 111 due to the coupling between the power feeding coil 112 and the loop-shaped coupling portion of the opening AP of the ground conductor 111.
- FIG. 5A is a plan view of the antenna device of the second embodiment, and FIG. 5B is a sectional view thereof.
- FIG. 6 is a longitudinal sectional view of the reader / writer 1 for a non-contact IC card described in Patent Document 1.
- FIG. 1A is a plan view of the antenna device and the communication terminal device of the first embodiment.
- FIG. 1B
- the communication terminal device of the first embodiment is a mobile communication terminal equipped with an NFC (Near Field Communication) system as an HF band RFID system.
- NFC Near Field Communication
- FIG. 1A is a plan view of the antenna device 206 and the communication terminal device 306 of the first embodiment
- FIG. 1B is a cross-sectional view thereof.
- FIG. 2 is a schematic perspective view of the antenna device 206 according to the first embodiment.
- FIG. 3 is a schematic plan view of the antenna device 206.
- the communication terminal device has a first printed wiring board 71, a second printed wiring board 81, a battery pack 83, and the like mounted in a casing (exterior) thereof.
- the first printed wiring board 71 and the second printed wiring board 81 are mounted with various functional elements and functional circuits such as a cellular antenna 72, a liquid crystal display element drive circuit, and a power supply control circuit. These functional elements and functional circuits are configured as surface mount components.
- wiring patterns for connecting these functional elements and functional circuits are three-dimensionally formed.
- the first printed wiring board 71 and the second printed wiring board 81 are made of a flame-retardant insulating base material such as an epoxy resin. These printed wiring boards 71 and 81 have a multilayer structure, and a ground conductor is provided in the inner layer over almost the entire area of the printed wiring boards 71 and 81. The ground conductor is used as a ground conductor for the various functional elements and functional circuits described above.
- An opening is provided in the vicinity of the end of the ground conductor 111 of the first printed wiring board 71, and further, a slit SL that connects the opening AP and the end of the ground conductor is formed.
- the slit SL connects the opening AP of the ground conductor 111 and the adjacent side of the opening AP.
- the opening AP and the slit SL provided in the ground conductor 111 are defined by a notch CP formed in the planar ground conductor 111.
- the portions facing each other across the slit SL are used as the first end and the second end, and the inner periphery of the opening AP is used as the loop coupling portion.
- a feeding coil 112 is provided in the inner layer of the first printed wiring board 71.
- the feeding coil 112 is patterned simultaneously with other various wirings formed on the first printed wiring board 71, and is patterned into a single-layer coil shape of a plurality of turns.
- the first end and the second end of the power feeding coil 112 are respectively connected to two input / output terminals of the NFC IC chip 73 which is a power feeding element.
- the coil opening of the feeding coil 112 has the same shape and size as the opening AP of the ground conductor 111. That is, the coil pattern of the feeding coil 112 overlaps with the periphery of the opening of the ground conductor 111.
- the NFC IC chip 73 may be a bare chip or a package IC.
- a chip capacitor 74 is connected in parallel to the power supply coil 112 between the NFC IC chip 73 and the power supply coil 112, and a resonance circuit is configured by the power supply coil 112 and the chip capacitor 74.
- the resonance frequency of this resonance circuit is set to be substantially equal to the frequency of the transmission / reception signal.
- a filter element and a matching element may be further provided between the NFC IC chip 73 and the feeding coil 112.
- FIG. 4 is a diagram illustrating a state of a current flowing through the power feeding coil 112 and the ground conductor 111 due to the coupling between the power feeding coil 112 and the loop-shaped coupling portion of the opening AP of the ground conductor 111.
- a chip capacitor 74 is connected to the loop-shaped coupling portion of the ground conductor.
- the first end of the slit SL of the ground conductor 111 is connected to the first terminal of the chip capacitor, and the second end of the slit SL is connected to the second terminal of the chip capacitor.
- a resonance circuit is formed by the inductance component of the loop-shaped coupling portion of the ground conductor and the capacitance component of the chip capacitor 74, and the ground conductor acts as a part of the resonator, and the resonance frequency is the HF that is the use frequency.
- the directivity direction of the NFC antenna device is It is the back surface S1 side.
- the communication distance in the side surface direction where the feeding coil 112 and the slit SL are provided is increased. Therefore, the feeding coil 112 is preferably disposed in the vicinity of the end of the casing 91 on the side where the directivity is provided, and the slit SL is also preferably extended toward the end of the casing 91.
- the ground conductor 111 of the first printed wiring board 71 is used as the radiator that transmits and receives the high-frequency signal, and the first feeding coil 112 is the same. Since it is provided on the printed wiring board 71, the distance between the feeding coil 112 and the ground conductor (radiating body) 111 is substantially determined when the first printed wiring board 71 is manufactured, and the assembly accuracy and the casing of the communication terminal device are determined. Due to the warp and deformation, the distance between the feeding coil and the ground conductor (radiating body) is unlikely to vary. Therefore, the electromagnetic field coupling degree between the feeding coil 112 and the loop coupling portion is not likely to vary, and stable communication characteristics can be obtained.
- both the feeding coil 112 and the ground conductor (radiating body) 111 are provided on the first printed wiring board 71, in other words, the feeding coil separate from the printed wiring board and the radiation separate from the printed wiring board. Since it is not the structure which provides a body, it is not necessary to ensure a big space for an antenna apparatus in a housing, and it contributes greatly to size reduction of an antenna apparatus and by extension, a communication terminal device.
- the flowing out solder, processing waste or the like is not undesirably sandwiched between the feeding coil and the loop-shaped coupling portion of the ground conductor, the communication characteristics can be further stabilized.
- the feeding coil 112 and the ground conductor 111 are not connected in direct current, even if surge noise such as ESD is applied to the ground conductor 111, it is difficult for surge noise to enter the NFC IC chip 73, and for NFC.
- the surge resistance of the IC chip 73 is improved. Further, even if noise enters the ground conductor 111 from various functional circuits, the characteristics of the NFC IC chip 73 are not greatly affected by the noise.
- the feeding coil 112 is provided on the front surface S2 side of the housing 91 when viewed from the ground conductor 111, and the NFC IC chip 73 is mounted on the back surface S1 side of the housing 91 when viewed from the ground conductor 111. . Therefore, the NFC IC chip 73 and the power feeding coil 112 are connected without passing through the layer of the ground conductor 111.
- FIG. 5A is a plan view of the antenna device according to the second embodiment, and FIG. 5B is a sectional view thereof.
- the feeding coil 112 is a laminated coil formed by laminating a plurality of loop patterns.
- the first end surface of the multilayer coil is located on the first main surface side of the ground conductor 111, and the second end surface of the multilayer coil is located on the second main surface side of the ground conductor 111.
- the communication terminal device may be various devices having a wireless communication function, such as a tablet-type terminal and a notebook PC, in addition to a mobile communication terminal.
- Various elements such as a liquid crystal display element may be mounted on the terminal housing in addition to the printed wiring board and the battery pack.
- the ground conductor may be provided not on the inner layer of the printed wiring board but on the surface layer.
- each ground conductor layer may be used as a radiator, or only the outermost or lowermost ground conductor may be used as a radiator. .
- the outer shape of the ground conductor is not limited to a rectangular shape, and can take various shapes according to the shape of the printed wiring board and the wiring patterns of various functional elements and functional circuits.
- the feeding coil may also be provided on the surface layer instead of the inner layer of the printed wiring board.
- the number of layers and the number of turns of the feeding coil can be appropriately designed according to the required inductance value.
- the loop-shaped coupling portion provided in the ground conductor is not limited to the one constituted by the opening portion and the slit portion.
- a concave portion is provided in the edge portion of the ground conductor, and the peripheral surface of the concave portion is used as the loop-shaped coupling portion. May be used.
- a loop-shaped conductor may be added to the edge of the ground conductor, and this may be used as a loop-shaped coupling portion.
- the widths of the opening and the slit may be the same.
- the shape and size of the coil opening of the feeding coil 112 are not necessarily the opening AP of the ground conductor 111. Need not be the same shape or size.
- the coil opening of the feeding coil 112 may be larger than the opening AP of the ground conductor 111, or the coil opening of the feeding coil 112 may be smaller than the opening AP of the ground conductor 111.
- the feeding coil 112 may be formed in the same layer as the ground conductor 111 (inside the opening AP).
- the arrangement position of the feeding coil 112 with respect to the ground conductor 111 may be on the back surface S1 side of the casing 91 when viewed from the ground conductor 111.
- the NFC IC chip 73 is also preferably mounted on the rear surface S1 side of the housing.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Near-Field Transmission Systems (AREA)
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Description
絶縁性基材を素体とし、前記絶縁性基材の表層または内層に設けられたグランド導体を有するプリント配線板と、
前記プリント配線板の表層または内層に、コイル状にパターニングされた給電コイルと、を備え、
前記グランド導体は、その一部に、第1端部および第2端部を有したループ状結合部を有し、
前記給電コイルは、前記グランド導体の前記ループ状結合部に電磁界を介して結合することを特徴とする。
絶縁性基材を素体とし、前記絶縁性基材の表層または内層に設けられたグランド導体を有するプリント配線板と、
前記プリント配線板の表層または内層に、コイル状にパターニングされた給電コイルと、
前記プリント配線板に実装され、前記給電コイルに接続された給電素子と、
前記プリント配線板を収納する筐体と、を備え、
前記グランド導体は、その一部に、第1端部および第2端部を有したループ状結合部を有し、
前記給電コイルは、前記グランド導体の前記ループ状結合部に電磁界を介して結合することを特徴とする。
第1の実施形態の通信端末装置は、HF帯RFIDシステムとしてのNFC(Near Field Communication)システムを搭載した移動体通信端末である。
図5(A)は第2の実施形態に係るアンテナ装置の平面図、図5(B)はその断面図である。
以上、本発明を具体的な実施形態に基づいて説明したが、本発明は上記の実施形態に限定されるものではない。
CP…切り欠き
S1…裏面
S2…表面
SL…スリット
71…第1プリント配線板
72…セルラーアンテナ
73…NFC用ICチップ
74…チップコンデンサ
81…第2プリント配線板
83…バッテリーパック
91…筺体
110…プリント配線板
111…グランド導体
112…給電コイル
206…アンテナ装置
306…通信端末装置
Claims (6)
- 絶縁性基材を素体とし、前記絶縁性基材の表層または内層に設けられたグランド導体を有するプリント配線板と、
前記プリント配線板の表層または内層に、コイル状にパターニングされた給電コイルと、を備え、
前記グランド導体は、その一部に、第1端部および第2端部を有したループ状結合部を有し、
前記給電コイルは、前記グランド導体の前記ループ状結合部に電磁界を介して結合することを特徴とするアンテナ装置。 - 前記第1端部と前記第2端部との間に容量素子が設けられている、請求項1に記載のアンテナ装置。
- 前記ループ状結合部は前記グランド導体に設けられた切り欠きによって形成されている、請求項1に記載のアンテナ装置。
- 前記給電コイルは、そのコイル開口が前記ループ状結合部の開口と重なっている、請求項1~3のいずれかに記載のアンテナ装置。
- 前記給電コイルは、複数のループパターンを積層してなる積層型コイルであって、前記積層型コイルの第1端面および第2端面は、前記グランド導体の第1主面側および第2主面側に位置している、請求項1~4のいずれかに記載のアンテナ装置。
- 絶縁性基材を素体とし、前記絶縁性基材の表層または内層に設けられたグランド導体を有するプリント配線板と、
前記プリント配線板の表層または内層に、コイル状にパターニングされた給電コイルと、
前記プリント配線板に実装され、前記給電コイルに接続された給電素子と、
前記プリント配線板を収納する筐体と、を備え、
前記グランド導体は、その一部に、第1端部および第2端部を有したループ状結合部を有し、
前記給電コイルは、前記グランド導体の前記ループ状結合部に電磁界を介して結合することを特徴とする通信端末装置。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201390000067.4U CN203674401U (zh) | 2012-02-01 | 2013-01-29 | 天线装置及通信终端装置 |
| JP2013556393A JP5720807B2 (ja) | 2012-02-01 | 2013-01-29 | アンテナ装置および通信端末装置 |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-019832 | 2012-02-01 | ||
| JP2012019832 | 2012-02-01 | ||
| JP2012185596 | 2012-08-24 | ||
| JP2012-185596 | 2012-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013115147A1 true WO2013115147A1 (ja) | 2013-08-08 |
Family
ID=48905186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2013/051810 Ceased WO2013115147A1 (ja) | 2012-02-01 | 2013-01-29 | アンテナ装置および通信端末装置 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5720807B2 (ja) |
| CN (1) | CN203674401U (ja) |
| WO (1) | WO2013115147A1 (ja) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466353A (zh) * | 2013-09-17 | 2015-03-25 | 中国科学院微电子研究所 | 超带宽可集成读写器电路模块的uhf频段rfid读写器天线 |
| CN104752808A (zh) * | 2013-12-31 | 2015-07-01 | 惠州比亚迪实业有限公司 | Nfc天线组件 |
| WO2015101213A1 (en) * | 2013-12-31 | 2015-07-09 | Byd Company Limited | Nfc antenna assembly |
| EP3007195A1 (en) * | 2014-10-10 | 2016-04-13 | Finder S.P.A. | Programmable switch and method for programming the same |
| CN107871930A (zh) * | 2016-09-26 | 2018-04-03 | 上海德门电子科技有限公司 | 一种适用开槽或者开孔金属壳体的nfc天线及其通讯设备 |
| US10147538B2 (en) | 2013-11-08 | 2018-12-04 | Nokia Technologies Oy | Coil arrangement |
| WO2020024232A1 (en) * | 2018-08-02 | 2020-02-06 | Nokia Shanghai Bell Co., Ltd. | Antenna and wireless communication device |
| CN111630711A (zh) * | 2018-01-29 | 2020-09-04 | 法国大陆汽车公司 | 近场以及特高频通信装置 |
| US11354558B2 (en) | 2013-01-18 | 2022-06-07 | Amatech Group Limited | Contactless smartcards with coupling frames |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110120583A (zh) * | 2016-01-14 | 2019-08-13 | 株式会社村田制作所 | 天线装置以及电子设备 |
| CN111430370B (zh) * | 2020-03-31 | 2023-03-21 | 厦门天马微电子有限公司 | 显示面板及显示装置 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004357043A (ja) * | 2003-05-29 | 2004-12-16 | Fuji Electric Holdings Co Ltd | アンテナユニット |
| JP2005198047A (ja) * | 2004-01-07 | 2005-07-21 | Fuji Electric Holdings Co Ltd | 情報処理装置のアンテナ、及び情報処理装置 |
| WO2009142114A1 (ja) * | 2008-05-21 | 2009-11-26 | 株式会社村田製作所 | 無線icデバイス |
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2013
- 2013-01-29 CN CN201390000067.4U patent/CN203674401U/zh not_active Expired - Lifetime
- 2013-01-29 WO PCT/JP2013/051810 patent/WO2013115147A1/ja not_active Ceased
- 2013-01-29 JP JP2013556393A patent/JP5720807B2/ja active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004357043A (ja) * | 2003-05-29 | 2004-12-16 | Fuji Electric Holdings Co Ltd | アンテナユニット |
| JP2005198047A (ja) * | 2004-01-07 | 2005-07-21 | Fuji Electric Holdings Co Ltd | 情報処理装置のアンテナ、及び情報処理装置 |
| WO2009142114A1 (ja) * | 2008-05-21 | 2009-11-26 | 株式会社村田製作所 | 無線icデバイス |
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| Publication number | Publication date |
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| CN203674401U (zh) | 2014-06-25 |
| JP5720807B2 (ja) | 2015-05-20 |
| JPWO2013115147A1 (ja) | 2015-05-11 |
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