JP6555791B1 - ケーブルアンテナ - Google Patents
ケーブルアンテナ Download PDFInfo
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- JP6555791B1 JP6555791B1 JP2019044963A JP2019044963A JP6555791B1 JP 6555791 B1 JP6555791 B1 JP 6555791B1 JP 2019044963 A JP2019044963 A JP 2019044963A JP 2019044963 A JP2019044963 A JP 2019044963A JP 6555791 B1 JP6555791 B1 JP 6555791B1
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- 239000004814 polyurethane Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/28—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium using the near field of leaky cables, e.g. of leaky coaxial cables
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/203—Leaky coaxial lines
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
- G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
- G06K7/10346—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the far field type, e.g. HF types or dipoles
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10366—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications
- G06K7/10415—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM
- G06K7/10425—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM the interrogation device being arranged for interrogation of record carriers passing by the interrogation device
- G06K7/10435—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM the interrogation device being arranged for interrogation of record carriers passing by the interrogation device the interrogation device being positioned close to a conveyor belt or the like on which moving record carriers are passing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
- H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
- H01Q11/04—Non-resonant antennas, e.g. travelling-wave antenna with parts bent, folded, shaped, screened or electrically loaded to obtain desired phase relation of radiation from selected sections of the antenna
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
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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
- H01Q1/2208—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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/77—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for interrogation
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Near-Field Transmission Systems (AREA)
- Waveguide Aerials (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
Description
このような無線通信システムとして、下記特許文献1には、ハンディタイプの無線通信用リーダ装置から、電磁波を無線通信タグに向けて放出するとともに、無線通信タグから放出された電磁波を、無線通信用リーダ装置で読み取る構成が開示されている。
λ/20≦G<L・・・(1)
λ:高周波電流の波長(mm)、L:ケーブルアンテナの先端部と、露出部における先端部側の端部と、の間の距離L(mm)
図1に示すように、本実施形態に係るケーブルアンテナ1は、無線通信タグ2に搭載された無線ICチップ3と、電磁波の授受による無線通信を行う通信リーダの一部を構成する。図1は、本実施形態に係るケーブルアンテナ1の外観図である。
無線ICチップ3としては、RFIDシステムにおいて一般的に用いられるものを採用することができる。
ケーブルアンテナ1は、複数の屈曲点1Aが形成されながら、屈曲点1Aを挟む両側が互いに並行とならないように屈曲している。図示の例では、ケーブルアンテナ1は、いわゆる九十九折状態となっている。
図1では、ケーブルアンテナ1の周囲に、複数の無線通信タグ2が、無作為な向きに配置されている。
図示の例では、露出部15において、外側導体13とともに絶縁層12が除去され、内側導体11が露出している。すなわち、露出部25とは、外側導体13よりも径方向の内側にある部分が露出している部分という意味である。
図3に示すように、ケーブルアンテナ1のうち、露出部15よりも先端部側にある部分は、露出部15から真っすぐ延びている。露出部15は、ケーブルアンテナ1に一つだけ設けられている。
同軸ケーブルは、図2に示す内部構造をしており、同軸ケーブルの外側導体を所定の幅寸法Gだけ除去することで、本発明のケーブルアンテナ1を得ることができる。
例えば、同軸ケーブルから外被14を所定の幅寸法だけ除去し、その後に外側導体13を同じ幅寸法だけ除去する。最後に絶縁層12を同じ幅寸法だけ除去することで、ケーブルアンテナ1が得られる。なおここで、幅寸法とは長手方向の寸法を指す。
これにより、露出部15では内側導体11の周辺の周回磁界が相殺されず、ケーブルアンテナ1全体としては、露出部15にのみ、円環状の磁界が発生したのと同じ状態となる。
λ/20≦G<L・・・(1)
この式において、λは高周波電流の波長(mm)を示し、Lは、前述の通り、ケーブルアンテナ1の先端部と、露出部15における先端部側の端部と、の間の距離L(mm)を指している。
露出部15の幅寸法Gが微小である場合には、物理的には外側導体13が除去されていても、露出部15を長手方向に挟む外側導体13同士の間が、電気的には導通している状態となるためである。このため、式(1)のλ/20≦Gが要求される。
次に、本実施形態に係るケーブルアンテナ1におけるアンテナ入力特性の評価結果について説明する。この試験では、ケーブルアンテナ1における先端部から露出部15までの距離Lを変更した場合におけるアンテナ特性の変化を評価した。
ここで、反射損失S11とは、ケーブルへの入力電力に対するケーブルから電源への反射電力の比をデシベル表示した値であり、下記式(2)により算出され、その値が小さいほど、ケーブルアンテナ1の効率が良いとされる値である。
また、露出部15の長手方向の幅寸法Gが、式(1)を満たしているので、露出部15から実効的に電磁波を放出させることができる。
そこで、このような特性を持つケーブルアンテナ1を、例えば商品棚などに配置し、商品棚に陳列された商品に無線通信タグ2を付した場合には、効率的な商品管理に供することが期待される。
ケーブルアンテナ1を、例えば平面視で円形状をなすループ状に配置してもよいし、並行する2辺が一定の距離を置くように、平面視で矩形状をなすように配置してもよい。
また、ケーブルアンテナ1をらせん状に配置した場合には、立体的に配置した無線通信タグ2に対して、効率的に無線通信を行うことができる。
1A 屈曲点
2 無線通信タグ
3 無線ICチップ
4 発振器
11 内側導体
12 絶縁層
13 外側導体
15 露出部
Claims (3)
- 高周波電流を供給する発振器が一端部に接続されるケーブルアンテナであって、
ケーブル状に延びる内側導体と、
前記内側導体を被覆する絶縁層と、
前記絶縁層を被覆する外側導体と、を有し、
前記ケーブルアンテナの長手方向における中間部には、少なくとも外側導体が除去された露出部が1つだけ形成され、
前記ケーブルアンテナの先端部と、前記露出部における先端部側の端部と、の間の距離Lは、前記高周波電流の波長λの1/4の3以上の奇数倍であり、
前記露出部の長手方向の幅寸法Gは、下記式(1)を満たしていることを特徴とするケーブルアンテナ。
λ/20≦G<λ/4・・・(1)
λ:高周波電流の波長(mm) - 内側導体、絶縁層、外側導体、および外被を有する同軸ケーブルから、外被、外側導体、および絶縁層が同じ幅寸法だけ除去されている請求項1に記載のケーブルアンテナ。
- 複数の屈曲点が形成されながら、屈曲点を挟む両側が互いに並行とならないように屈曲していることを特徴とする請求項1又は2に記載のケーブルアンテナ。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019044963A JP6555791B1 (ja) | 2019-03-12 | 2019-03-12 | ケーブルアンテナ |
PCT/JP2020/010671 WO2020184639A1 (ja) | 2019-03-12 | 2020-03-11 | ケーブルアンテナ、ゲートアンテナ、アンテナユニット、自動搬送棚、および無人レジ |
CN202080098289.9A CN115280680B (zh) | 2019-03-12 | 2020-03-11 | 线缆天线、栅极天线、天线单元、自动搬送架以及无人收银机 |
EP20770378.6A EP4120577A4 (en) | 2019-03-12 | 2020-03-11 | CABLE ANTENNA, GATE ANTENNA, ANTENNA UNIT, AUTOMATIC CONVEYOR AND UNMANNED REGISTER |
JP2021505116A JP7154651B2 (ja) | 2019-03-12 | 2020-03-11 | ケーブルアンテナ、ゲートアンテナ、アンテナユニット、自動搬送棚、および無人レジ |
TW109108234A TWI841700B (zh) | 2019-03-12 | 2020-03-12 | 電纜天線、閘天線、天線單元、自動運送架、和無人收銀機 |
US17/941,244 US11862852B2 (en) | 2019-03-12 | 2022-09-09 | Cable antenna, gate antenna, antenna unit, automatic conveyor shelf and unmanned cash register |
JP2022154564A JP2022173416A (ja) | 2019-03-12 | 2022-09-28 | ケーブルアンテナ、ゲートアンテナ、アンテナユニット、自動搬送棚、および無人レジ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019044963A JP6555791B1 (ja) | 2019-03-12 | 2019-03-12 | ケーブルアンテナ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP6555791B1 true JP6555791B1 (ja) | 2019-08-07 |
JP2020150367A JP2020150367A (ja) | 2020-09-17 |
Family
ID=67539797
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019044963A Active JP6555791B1 (ja) | 2019-03-12 | 2019-03-12 | ケーブルアンテナ |
JP2021505116A Active JP7154651B2 (ja) | 2019-03-12 | 2020-03-11 | ケーブルアンテナ、ゲートアンテナ、アンテナユニット、自動搬送棚、および無人レジ |
JP2022154564A Pending JP2022173416A (ja) | 2019-03-12 | 2022-09-28 | ケーブルアンテナ、ゲートアンテナ、アンテナユニット、自動搬送棚、および無人レジ |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
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JP2021505116A Active JP7154651B2 (ja) | 2019-03-12 | 2020-03-11 | ケーブルアンテナ、ゲートアンテナ、アンテナユニット、自動搬送棚、および無人レジ |
JP2022154564A Pending JP2022173416A (ja) | 2019-03-12 | 2022-09-28 | ケーブルアンテナ、ゲートアンテナ、アンテナユニット、自動搬送棚、および無人レジ |
Country Status (5)
Country | Link |
---|---|
US (1) | US11862852B2 (ja) |
EP (1) | EP4120577A4 (ja) |
JP (3) | JP6555791B1 (ja) |
CN (1) | CN115280680B (ja) |
WO (1) | WO2020184639A1 (ja) |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5758804Y2 (ja) * | 1977-01-18 | 1982-12-16 | ||
US5592183A (en) * | 1988-12-06 | 1997-01-07 | Henf; George | Gap raidated antenna |
DE4331171A1 (de) * | 1993-09-14 | 1995-03-16 | Rheydt Kabelwerk Ag | Abstrahlendes koaxiales Hochfrequenzkabel |
JP3231677B2 (ja) * | 1997-10-16 | 2001-11-26 | 山形日本電気株式会社 | ウェーハ搬送方式 |
JP4067672B2 (ja) * | 1998-12-25 | 2008-03-26 | 松下電器産業株式会社 | アンテナ装置並びにそれを用いた無線装置及び無線中継装置 |
JP2007295395A (ja) * | 2006-04-26 | 2007-11-08 | Fujitsu Ltd | タグ用アンテナ及びそれを用いたタグ |
US8599090B2 (en) | 2008-02-28 | 2013-12-03 | Mitsubishi Electric Corporation | Waveguide slot array antenna apparatus |
JP2012186737A (ja) * | 2011-03-07 | 2012-09-27 | Sony Corp | アンテナ |
AU2012236870A1 (en) | 2011-03-25 | 2013-05-02 | Visa International Service Association | In-person one-tap purchasing apparatuses, methods and systems |
US8844814B2 (en) * | 2012-12-10 | 2014-09-30 | Tai-Hwa Liu | Radio frequency identification automatic detecting system with antenna net |
JP6344528B2 (ja) * | 2015-06-03 | 2018-06-20 | 株式会社村田製作所 | Rfidタグのリーダ用のアンテナ付きトレイ及びrfidシステム |
JP6455629B2 (ja) * | 2016-03-14 | 2019-01-23 | 株式会社村田製作所 | Rfidタグのリーダ装置付きカゴ及び物品管理システム |
GB2552921A (en) * | 2016-04-04 | 2018-02-21 | Creo Medical Ltd | Electrosurgical probe for delivering RF and microwave energy |
KR101699814B1 (ko) | 2016-06-17 | 2017-01-25 | 한미아이티 주식회사 | 물품을 식별하는 통합리딩장치 |
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2019
- 2019-03-12 JP JP2019044963A patent/JP6555791B1/ja active Active
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2020
- 2020-03-11 WO PCT/JP2020/010671 patent/WO2020184639A1/ja unknown
- 2020-03-11 CN CN202080098289.9A patent/CN115280680B/zh active Active
- 2020-03-11 EP EP20770378.6A patent/EP4120577A4/en active Pending
- 2020-03-11 JP JP2021505116A patent/JP7154651B2/ja active Active
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2022
- 2022-09-09 US US17/941,244 patent/US11862852B2/en active Active
- 2022-09-28 JP JP2022154564A patent/JP2022173416A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPWO2020184639A1 (ja) | 2020-09-17 |
US11862852B2 (en) | 2024-01-02 |
WO2020184639A1 (ja) | 2020-09-17 |
CN115280680A (zh) | 2022-11-01 |
CN115280680B (zh) | 2023-06-16 |
US20230021894A1 (en) | 2023-01-26 |
EP4120577A4 (en) | 2023-04-19 |
JP7154651B2 (ja) | 2022-10-18 |
JP2022173416A (ja) | 2022-11-18 |
EP4120577A1 (en) | 2023-01-18 |
JP2020150367A (ja) | 2020-09-17 |
TW202103380A (zh) | 2021-01-16 |
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