JP6650641B2 - Director - Google Patents

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JP6650641B2
JP6650641B2 JP2016040745A JP2016040745A JP6650641B2 JP 6650641 B2 JP6650641 B2 JP 6650641B2 JP 2016040745 A JP2016040745 A JP 2016040745A JP 2016040745 A JP2016040745 A JP 2016040745A JP 6650641 B2 JP6650641 B2 JP 6650641B2
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waveguide element
director
waveguide
conductor
tag
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JP2017158073A (en
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詩朗 杉村
詩朗 杉村
達次 庭田
達次 庭田
準登 鍋島
準登 鍋島
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Phoenix Solution Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/02—Coupling devices of the waveguide type with invariable factor of coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • H01Q21/10—Collinear arrangements of substantially straight elongated conductive units
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
    • H04B5/48—Transceivers

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Computer Hardware Design (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Description

本発明は、リーダ・ライタとRFタグの間に導体が存在する場合でも交信可能とする導波器に関する。   The present invention relates to a director that enables communication even when a conductor exists between a reader / writer and an RF tag.

近年、RFID(Radio Frequency Identification)が利用されている。
RFIDシステムで使用するRFタグにはアンテナ及びICチップが格納されており、リーダ・ライタのアンテナから送信された搬送波をRFタグのアンテナで受信し、ICチップに記録されている識別データ等を反射波に乗せてリーダ・ライタへ返送することで非接触で交信する仕組みになっている。 In recent years, RFID (Radio Frequency Identification) has been used.
The RF tag used in the RFID system contains an antenna and an IC chip, and the carrier transmitted from the reader / writer antenna is received by the RF tag antenna and the identification data recorded on the IC chip is reflected. It is a mechanism for contactless communication by returning it to a reader / writer on a wave.

RFIDシステムでは広い読み取り範囲を求められることがあり、例えば特許文献1には反射器や導波器を配置することでアンテナの利得を増大させ、読み取り範囲を増大させる技術が開示されている。
また、特許文献2にはRFタグとリーダ・ライタによる交信を金属製の書庫の内部で行うことを可能にする技術が開示されている。 In the RFID system, a wide reading range may be required. For example, Patent Document 1 discloses a technique of increasing a gain of an antenna and increasing a reading range by arranging a reflector or a director.
Further, Patent Document 2 discloses a technology that enables communication between an RF tag and a reader / writer to be performed inside a metal library.

特表2010−530158号公報JP 2010-530158 Gazette 特開平10-62518号公報JP-A-10-62518

ところが、上記従来技術では以下のような問題がある。
すなわち、リーダ・ライタとRFタグとの間に金属等の導体が存在する場合、上記特許文献1の技術では電波が導体で反射されてしまうため交信不能になる。
また、上記特許文献2の技術はあくまでリーダ・ライタとRFタグの両者が金属で囲まれた書庫の内部に存在する場合に適用し得る技術であり、リーダ・ライタとRFタグとの間に金属等の導体が存在する状況下では交信不能である。 However, the conventional technique has the following problems.
That is, when a conductor such as a metal exists between the reader / writer and the RF tag, communication becomes impossible because the radio wave is reflected by the conductor in the technique of Patent Document 1.
Further, the technology of Patent Document 2 is a technology that can be applied when both the reader / writer and the RF tag are present inside a library surrounded by metal, and the metal between the reader / writer and the RF tag is used. Communication is impossible under the presence of such conductors.

本発明は、このような問題を考慮して、リーダ・ライタとRFタグの間に導体が存在する場合でも交信可能とする導波器を提供することを目的とする。   An object of the present invention is to provide a director that enables communication even when a conductor exists between a reader / writer and an RF tag in consideration of such a problem.

本発明の導波器は、リーダ・ライタとRFタグとの間に電波を遮蔽する遮蔽導体が存在する場合に使用する導波器において、前記電波の波長をλとした場合に、電気長がそれぞれλ/4の第1導波素子及び第2導波素子と、前記第1導波素子と第2導波素子の一方の端部同士を連結する伝送線路とを備えることを特徴とする。
また、前記第1導波素子と第2導波素子の少なくとも一方が絶縁材で被覆されていることを特徴とする。
また、前記第1導波素子と第2導波素子の一方に絶縁材から成る持ち手を備えることを特徴とする。
また、前記第1導波素子と第2導波素子の電気長がλ／4ではなく、λ／2、3λ／4、5λ／8のうちのいずれかであることを特徴とする。
また、前記遮蔽導体が備える貫通孔の内部に前記伝送線路を位置させると共に、前記遮蔽導体によって区切られる2つの空間のうち、リーダ・ライタが存在する側の空間に前記第1導波素子を露出させ、RFタグが存在する側の空間に前記第2導波素子を露出させた状態で使用することを特徴とする。 The director of the present invention is a director used when a shielding conductor for shielding a radio wave exists between a reader / writer and an RF tag. It is characterized by comprising a first waveguide element and a second waveguide element of λ / 4, respectively, and a transmission line connecting one ends of the first waveguide element and the second waveguide element.
Further, at least one of the first waveguide element and the second waveguide element is covered with an insulating material.
In addition, one of the first waveguide element and the second waveguide element is provided with a handle made of an insulating material.
Further, the electric length of the first waveguide element and the second waveguide element is not λ / 4, but one of λ / 2, 3λ / 4, and 5λ / 8.
In addition, the transmission line is positioned inside the through-hole provided in the shield conductor, and the first waveguide element is exposed in a space on the side where the reader / writer exists, of the two spaces separated by the shield conductor. And the second waveguide element is used in a state where the second waveguide element is exposed in a space where the RF tag exists.

本発明では遮蔽導体の貫通孔に導波器を挿入し、遮蔽導体で区切られた2つの空間に第1導波素子と第2導波素子を配置する。リーダ・ライタから送信された電波は第1導波素子で受信され、第2導波素子で発信されるため、従来のように全ての電波が遮蔽導体で反射されることがなくなり、リーダ・ライタとRFタグとを交信させることができる。
第1導波素子や第2導波素子を絶縁材で被覆することにすれば、導波素子の周囲にある金属等の導体の悪影響を受けることなく交信することができる。
第1導波素子と第2導波素子の電気長をλ／4、λ／2、3λ／4、5λ／8のうちのいずれかにすることで交信の精度を向上させることができる。 In the present invention, a director is inserted into a through hole of a shield conductor, and a first waveguide element and a second waveguide element are arranged in two spaces separated by the shield conductor. Radio waves transmitted from the reader / writer are received by the first waveguide element and transmitted by the second waveguide element, so that all radio waves are no longer reflected by the shield conductor as in the past, and the reader / writer And the RF tag can be communicated.
If the first waveguide element and the second waveguide element are covered with an insulating material, communication can be performed without being adversely affected by a conductor such as a metal around the waveguide element.
By setting the electrical length of the first waveguide element and the second waveguide element to any one of λ / 4, λ / 2, 3λ / 4, and 5λ / 8, communication accuracy can be improved.

第1の実施の形態の導波器、RFIDシステム及び遮蔽導体の配置を模式的に示す斜視図(a)及び遮蔽導体の貫通孔に導波器を挿入した状態を示す縦断面図(b)A perspective view schematically showing the arrangement of the director, the RFID system and the shield conductor of the first embodiment (a) and a longitudinal sectional view showing a state where the director is inserted into a through hole of the shield conductor (b). 導波器の変形例を示す縦断面図Longitudinal sectional view showing a modification of the director 導波器の変形例を示す縦断面図Longitudinal sectional view showing a modification of the director 導波器の変形例を示す側面図Side view showing modified example of director 第2の実施の形態の導波器、RFIDシステム及び遮蔽導体の配置を模式的に示す縦断面図Longitudinal sectional view schematically showing the arrangement of the director, the RFID system, and the shielding conductor of the second embodiment.

［第1の実施の形態］
図1(a)及び(b)に示すように、本発明の導波器10は、リーダ・ライタ100とRFタグ101との間に、電波Wを遮蔽する遮蔽導体102が存在する状況下で使用するものである。
遮蔽導体102としては例えばトラックのステンレス製の荷箱103が挙げられる。この場合、荷箱103内の複数の荷物104それぞれにRFタグ101を貼付しておき、荷箱103の外からリーダ・ライタ100を使用して各RFタグ101と交信することになる。RFタグ101の種類としてはパッシブ型とアクティブ型の両方に適用できる。
リーダ・ライタ100及びRFタグ101は周知のRFIDシステムで用いられているものと同じものを使用すればよいため説明は省略し、以下、本発明の特徴である導波器10について主に説明する。 [First Embodiment]
As shown in FIGS.1 (a) and (b), the director 10 of the present invention is used under a situation where a shielding conductor 102 for shielding the radio wave W exists between the reader / writer 100 and the RF tag 101. To use.
As the shielding conductor 102, for example, a packing box 103 made of stainless steel of a truck is cited. In this case, an RF tag 101 is attached to each of a plurality of packages 104 in the packing box 103, and communication with each of the RF tags 101 is performed using the reader / writer 100 from outside the packing box 103. The RF tag 101 can be applied to both passive type and active type.
The reader / writer 100 and the RF tag 101 may be the same as those used in a well-known RFID system, so that the description thereof will be omitted, and the following mainly describes the director 10 which is a feature of the present invention. .

本発明の導波器10は第1導波素子20、第2導波素子30及び伝送線路40から概略構成される。
第1導波素子20は棒状の部材である。RFIDシステムで使用する電波Wの波長をλとした場合に、第1導波素子20の電気長がλ/4になるように調節している。
第2導波素子30も棒状の部材であり、その電気長がλ/4になるように調節している。
伝送線路40は第1導波素子20と第2導波素子30の一方の端部同士を連結する部材である。本実施の形態では伝送線路40として同軸ケーブルを使用している。同軸ケーブルは銅線等から成る内部導体の周囲をポリエチレン等から成る絶縁体で覆い、更に絶縁体の周囲を網組み銅線等から成る外部導体で覆い、外部導体の周囲をポリ塩化ビニル等の保護層で被覆した構造である。伝送線路40として同軸ケーブル以外に例えばストリップライン、マイクロストリップライン、平行2導体線路等の周知のものを利用できる。 The director 10 of the present invention is roughly composed of a first waveguide element 20, a second waveguide element 30, and a transmission line 40.
The first waveguide element 20 is a rod-shaped member. When the wavelength of the radio wave W used in the RFID system is λ, the electric length of the first waveguide element 20 is adjusted to be λ / 4.
The second waveguide element 30 is also a rod-shaped member, and its electric length is adjusted to be λ / 4.
The transmission line 40 is a member for connecting one ends of the first waveguide element 20 and the second waveguide element 30 to each other. In the present embodiment, a coaxial cable is used as the transmission line 40. The coaxial cable covers the inner conductor made of copper wire etc. with an insulator made of polyethylene, etc., further covers the insulator around with an outer conductor made of braided copper wire, etc., and the outer conductor made of polyvinyl chloride etc. It is a structure covered with a protective layer. As the transmission line 40, a well-known transmission line such as a stripline, a microstripline, and a parallel two-conductor line can be used other than the coaxial cable.

第1導波素子20及び第2導波素子30は伝送線路40と電気的に繋がっている。
本実施の形態では第1導波素子20と第2導波素子30のそれぞれを絶縁材50で被覆している。各導波素子20,30を絶縁材50で被覆することで、金属等の遮蔽導体102が各導波素子20,30に接触したり、各導波素子20,30の近傍に位置する場合でも安定的に交信することが可能になる。なお、第1導波素子20と第2導波素子30のうちいずれか一方のみを絶縁材50で被覆してもよく、或いは両方を絶縁材50で被覆しないことにしてもよい。 The first waveguide element 20 and the second waveguide element 30 are electrically connected to the transmission line 40.
In the present embodiment, each of first waveguide element 20 and second waveguide element 30 is covered with insulating material 50. By covering each of the waveguide elements 20 and 30 with the insulating material 50, even when the shielding conductor 102 such as a metal contacts each of the waveguide elements 20 and 30, or is located near each of the waveguide elements 20 and 30, It is possible to communicate stably. Note that only one of the first waveguide element 20 and the second waveguide element 30 may be covered with the insulating material 50, or both may not be covered with the insulating material 50.

次に導波器10の使用方法及び動作を説明する。
遮蔽導体102の貫通孔102aに、第2導波素子30の端部側から挿入していき、貫通孔102aの内部に伝送線路40が位置した時点で停止させる。伝送線路40の表面は保護層で覆われているので、伝送線路40が貫通孔102aの内面と接触していても交信に悪影響を及ぼさない。
リーダ・ライタ100から送信された電波Wは、まず第1導波素子20で受信され、伝送線路40内を通って第2導波素子30から送信される。なお、第1導波素子20と第2導波素子30の間に遮蔽導体102が存在するため、リーダ・ライタ100から送信された電波Wを第2導波素子30が直接受信することはない。
第2導波素子30から送信された電波WはRFタグ101で受信され、RFタグ101は反射波として電波Wを送信する。
第2導波素子30から送信された電波Wは、まず第2導波素子30で受信され、伝送線路40内を通って第1導波素子20から送信される。この際も遮蔽導体102が存在するため、RFタグ101から送信された電波Wを第1導波素子20が直接受信することはない。
第1導波素子20から送信された電波Wはリーダ・ライタ100で受信され、これで交信が完了する。 Next, how to use and operate the director 10 will be described.
The second waveguide element 30 is inserted into the through hole 102a of the shield conductor 102 from the end side, and stopped when the transmission line 40 is positioned inside the through hole 102a. Since the surface of the transmission line 40 is covered with the protective layer, even if the transmission line 40 is in contact with the inner surface of the through-hole 102a, the communication is not adversely affected.
The radio wave W transmitted from the reader / writer 100 is first received by the first waveguide element 20, passes through the transmission line 40, and is transmitted from the second waveguide element 30. Since the shield conductor 102 exists between the first waveguide element 20 and the second waveguide element 30, the second waveguide element 30 does not directly receive the radio wave W transmitted from the reader / writer 100. .
The radio wave W transmitted from the second waveguide element 30 is received by the RF tag 101, and the RF tag 101 transmits the radio wave W as a reflected wave.
The radio wave W transmitted from the second waveguide element 30 is first received by the second waveguide element 30, passes through the transmission line 40, and is transmitted from the first waveguide element 20. Also at this time, since the shield conductor 102 is present, the first waveguide element 20 does not directly receive the radio wave W transmitted from the RF tag 101.
The radio wave W transmitted from the first waveguide element 20 is received by the reader / writer 100, thereby completing the communication.

なお、遮蔽導体102が予め貫通孔102aを備えている場合には、当該貫通孔102aに導波器10を挿入すればよく、遮蔽導体102が貫通孔102aを備えていない場合には別途貫通孔102aを形成しておく必要がある。
なお、第1導波素子20及び第2導波素子30の電気長をλ/4としたが、これに限らずλ／2、3λ／4、5λ／8のうちのいずれかであってもよい。
また、第1導波素子20は必ずしも棒状でなくてもよく、例えば面形状、コイル形状、メアンダ形状でもよい。
第2導波素子20は貫通孔102aに挿入できる範囲内で棒状以外に例えば面形状、コイル形状、メアンダ形状でもよい。 When the shielding conductor 102 has the through-hole 102a in advance, the waveguide 10 may be inserted into the through-hole 102a, and when the shielding conductor 102 does not have the through-hole 102a, the through-hole 102a is separately provided. It is necessary to form 102a.
Although the electrical length of the first waveguide element 20 and the second waveguide element 30 is λ / 4, the invention is not limited thereto, and any one of λ / 2, 3λ / 4, and 5λ / 8 may be used. Good.
Further, the first waveguide element 20 does not necessarily have to have a rod shape, and may have, for example, a plane shape, a coil shape, or a meander shape.
The second waveguide element 20 may have, for example, a plane shape, a coil shape, or a meander shape other than the rod shape as long as it can be inserted into the through hole 102a.

次に導波器10の変形例について説明する。
図2に示すように、第1導波素子20に絶縁材50から成る持ち手60を形成してもよい。持ち手60にはストラップ取り付け穴61を設けており、持ち手の端面にストッパー60aを設けている。持ち手60を設けることで導波器10の使用者にとって作業性が向上し、ストラップ取り付け穴61を設けることで携帯性が向上する。また、ストッパー60aの寸法を貫通孔102aの寸法よりも大きくしておけば、導波器10を貫通孔102aに挿入する際にストッパー60aを遮蔽導体102の表面に突き当てればよいので利便性が向上する。
図3に示すように、ステッキ状の持ち手62にしてもよい。持ち手62をステッキ状にすることで、遮蔽導体102が使用者の足元にある場合（例えば遮蔽導体102がマンホールの蓋の場合）、使用者は屈まずに立った状態のままで第2導波素子30を貫通孔102aに挿入することができるので、使用者の身体的負担を軽減できる。
図4に示すように、L型の長尺部材63の先端に導波器10を取り付けてもよい。導波器10をL型の長尺部材63に取り付けることで、遮蔽導体102が使用者の頭上や地中等の手が届かない位置にある場合でも梯子等を使用することなく第2導波素子30を貫通孔102aに挿入できる。 Next, a modified example of the director 10 will be described.
As shown in FIG. 2, a handle 60 made of the insulating material 50 may be formed on the first waveguide element 20. The handle 60 is provided with a strap mounting hole 61, and a stopper 60a is provided on the end face of the handle. Providing the handle 60 improves workability for the user of the director 10, and providing the strap mounting hole 61 improves portability. Further, if the size of the stopper 60a is larger than the size of the through hole 102a, the convenience can be obtained because the stopper 60a may be abutted against the surface of the shielding conductor 102 when the waveguide 10 is inserted into the through hole 102a. improves.
As shown in FIG. 3, a stick-shaped handle 62 may be used. By forming the handle 62 into a stick shape, when the shielded conductor 102 is at the user's feet (for example, when the shielded conductor 102 is a manhole cover), the user is allowed to stand on the second guide while standing without bending. Since the wave element 30 can be inserted into the through hole 102a, the physical burden on the user can be reduced.
As shown in FIG. 4, the director 10 may be attached to the tip of the L-shaped long member 63. By attaching the waveguide 10 to the L-shaped long member 63, the second waveguide element can be used without using a ladder or the like even when the shielded conductor 102 is in a position where the user cannot reach, such as above the head or in the ground. 30 can be inserted into the through hole 102a.

［第2の実施の形態］
本発明の導波器10の第2の実施の形態について説明するが、上記第1の実施の形態と同一の構成になる箇所については同一の符号を付してその説明を省略する。
図5に示すように、本実施の形態の導波器70はマンホール200に適用した点に特徴を有する。
具体的には、マンホール200の金属製の蓋201の裏面にRFタグ101を貼り付けてある。そして、当該蓋201に形成されている開閉用の鍵穴202を貫通孔として利用して、鍵穴202に導波器10を挿入している。
RFタグ101を蓋201の裏面に貼り付けた場合、天候の影響を受けたりマンホール200の埋設環境によっては交信できないことがあるが、このように鍵穴202に導波器10を挿入することで電波Wが蓋201の裏面側まで届き、交信可能となる。 [Second embodiment]
A second embodiment of the director 10 of the present invention will be described. Parts having the same configuration as the first embodiment will be denoted by the same reference numerals, and description thereof will be omitted.
As shown in FIG. 5, director 70 of the present embodiment is characterized in that it is applied to manhole 200.
Specifically, the RF tag 101 is attached to the back surface of the metal cover 201 of the manhole 200. The waveguide 10 is inserted into the keyhole 202 using the opening / closing keyhole 202 formed in the lid 201 as a through hole.
When the RF tag 101 is affixed to the back of the lid 201, communication may not be possible depending on the weather or the environment in which the manhole 200 is buried. W reaches the back side of the lid 201, and communication becomes possible.

本発明は、リーダ・ライタとRFタグの間に導体が存在する場合でも交信可能とする導波器に関するものであり、産業上の利用可能性を有する。   The present invention relates to a director that enables communication even when a conductor exists between a reader / writer and an RF tag, and has industrial applicability.

W 電波
10 導波器
20 第1導波素子
30 第2導波素子
40 伝送線路
50 絶縁材
60 持ち手
60a ストッパー
61 ストラップ取り付け穴
62 持ち手
63 長尺部材
70 導波器
100 リーダ・ライタ
101 RFタグ
102a 貫通孔
102 遮蔽導体
103 荷箱
104 荷物
200 マンホール
201 蓋
202 鍵穴


W radio wave
10 director
20 1st waveguide element
30 2nd waveguide element
40 transmission line
50 Insulation
60 Possession
60a stopper
61 Strap hole
62 Possession
63 long members
70 director
100 reader / writer
101 RF tag
102a Through hole
102 Shielded conductor
103 packing box
104 luggage
200 manhole
201 lid
202 keyhole


Claims (4)

リーダ・ライタとＲＦタグとの間に電波を遮蔽する遮蔽導体が存在し、前記遮蔽導体に貫通孔が存在する場合に使用する着脱可能な導波器において、
前記電波の波長をλとした場合に、電気長がそれぞれλ／４の第１導波素子及び第２導波素子と、前記第１導波素子と第２導波素子の一方の端部同士を連結する伝送線路とを備え、
前記第１導波素子に絶縁材から成る持ち手が備えられ、前記持ち手の前記第２導波素子側の端面にストッパーが形成されており、
前記第２導波素子は前記貫通孔に貫通することを特徴とする導波器。 There is a shielding conductor for shielding radio waves between the reader / writer and the RF tag, and in a detachable director used when a through hole exists in the shielding conductor ,
Assuming that the wavelength of the radio wave is λ, the first waveguide element and the second waveguide element each having an electrical length of λ / 4, and one end of the first waveguide element and the second waveguide element. and a transmission line for connecting,
A handle made of an insulating material is provided on the first waveguide element, and a stopper is formed on an end face of the handle on the second waveguide element side;
Waveguide and the second waveguide element is characterized that you through the through hole. 前記第２導波素子が絶縁材で被覆されていることを特徴とする請求項１に記載の導波器。 Waveguide according to claim 1, wherein the second Shirubehamoto child is covered with an insulating material. 前記第１導波素子および前記第２導波素子の電気長がλ／４ではなく、λ／２、３λ／４、５λ／８のうちのいずれかであることを特徴とする請求項１または２に記載の導波器。 Rather than electrical length lambda / 4 of the first waveguide element and said second waveguide element, λ / 2,3λ / 4,5λ / 8 claim 1 or, characterized in that any of a 3. The director according to 2 . 前記遮蔽導体が備える貫通孔の内部に前記伝送線路を位置させると共に、前記遮蔽導体によって区切られる２つの空間のうち、リーダ・ライタが存在する側の空間に前記第１導波素子を露出させ、ＲＦタグが存在する側の空間に前記第２導波素子を露出させた状態で使用することを特徴とする請求項１〜３のいずれか一項に記載の導波器。
Positioning the transmission line inside the through-hole provided in the shielded conductor, and exposing the first waveguide element to a space on the side where a reader / writer exists, of the two spaces separated by the shielded conductor, The director according to any one of claims 1 to 3 , wherein the second waveguide element is used in a state where the second waveguide element is exposed in a space where an RF tag is present.
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