JP2006237674A - Patch antenna and rfid inlet - Google Patents
Patch antenna and rfid inlet Download PDFInfo
- Publication number
- JP2006237674A JP2006237674A JP2005045088A JP2005045088A JP2006237674A JP 2006237674 A JP2006237674 A JP 2006237674A JP 2005045088 A JP2005045088 A JP 2005045088A JP 2005045088 A JP2005045088 A JP 2005045088A JP 2006237674 A JP2006237674 A JP 2006237674A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- antenna surface
- slit
- pair
- dielectric
- 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.)
- Pending
Links
Landscapes
- Waveguide Aerials (AREA)
Abstract
Description
本発明は、パッチアンテナ、並びに、パッチアンテナ及び送受信素子を有するＲＦＩＤインレットに関する。 The present invention relates to a patch antenna, and an RFID inlet having a patch antenna and a transmission / reception element.
パッチアンテナ及び送受信素子を有するＲＦＩＤインレットは、識別情報の正確且つ効率的な送受信を行えるものとして、物流管理や人の入出退管理等の種々の分野において非常に注目されている。 An RFID inlet having a patch antenna and a transmission / reception element has attracted a great deal of attention in various fields such as distribution management and human entry / exit management as being capable of transmitting and receiving identification information accurately and efficiently.
しかしながら、従来のＲＦＩＤインレットは、省サイズ化や、パッチアンテナと送受信素子との接続作業性に関して、十分な考慮がなされていなかった。
図８は、従来のＲＦＩＤインレットにおけるパッチアンテナの一例を示す斜視図である。
However, the conventional RFID inlet has not been sufficiently considered in terms of size reduction and connection workability between the patch antenna and the transmission / reception element.
FIG. 8 is a perspective view showing an example of a patch antenna in a conventional RFID inlet.
前記パッチアンテナ１００は、導体によって形成されるグラウンド面１１０と、該グラウンド面１１０上に載置された誘電体１２０と、導体によって形成されたアンテナ面１３０であって、前記誘電体１２０上に載置されたアンテナ面１３０とを有している。
そして、前記送受信素子（図示せず）は、一対の接続端子の一方が給電点１４１において前記グラウンド面に接続され、且つ、他方が給電点１４２において整合回路１５０を介して前記アンテナ面１３０に接続されている。
The patch antenna 100 includes a ground surface 110 formed of a conductor, a dielectric 120 placed on the ground surface 110, and an antenna surface 130 formed of a conductor, and is mounted on the dielectric 120. And an antenna surface 130 placed thereon.
The transmitting / receiving element (not shown) has one of a pair of connection terminals connected to the ground plane at a feeding point 141 and the other connected to the antenna plane 130 via a matching circuit 150 at a feeding point 142. Has been.
詳しくは、図８に示すように、従来のＲＦＩＤインレットにおいては、前記整合回路１５０が前記アンテナ面１３０の外部に設けられている。
従って、ＲＦＩＤインレット全体の縮小化を十分には図ることができなかった。
Specifically, as shown in FIG. 8, in the conventional RFID inlet, the matching circuit 150 is provided outside the antenna surface 130.
Therefore, the entire RFID inlet cannot be sufficiently reduced.
さらに、図８に示す従来例においては、前記送受信素子は、一対の接続端子の一方が前記誘電体１２０上に設けられた整合回路１５０を介して前記アンテナ面１３０に接続され、且つ、他方が前記誘電体１２０の下方に配置された前記グラウンド面１１０に接続されている。
即ち、従来の構成においては、前記送受信素子は、前記誘電体１２０の厚みに相当する段差が生じた状態で、前記アンテナ面及び前記グラウンド面に接続されており、かかる接続作業が極めて困難であった。
Further, in the conventional example shown in FIG. 8, the transmission / reception element has one of a pair of connection terminals connected to the antenna surface 130 via a matching circuit 150 provided on the dielectric 120, and the other is connected to the antenna surface 130. The dielectric 120 is connected to the ground plane 110 disposed below the dielectric 120.
That is, in the conventional configuration, the transmitting / receiving element is connected to the antenna surface and the ground surface in a state where a step corresponding to the thickness of the dielectric 120 is generated, and such connection work is extremely difficult. It was.
本発明は、前記従来技術に鑑みなされたものであり、可及的な小型化を図り得るパッチアンテナ及びＲＦＩＤインレットの提供を、一の目的とする。
又、本発明は、送受信素子とパッチアンテナとの接続作業の簡略化を図り得るパッチアンテナ及びＲＦＩＤの提供を、他の目的とする。
The present invention has been made in view of the above prior art, and an object thereof is to provide a patch antenna and an RFID inlet that can be made as small as possible.
Another object of the present invention is to provide a patch antenna and an RFID capable of simplifying the connection work between the transmitting / receiving element and the patch antenna.
本発明は、前記目的を達成するために、誘電体が介挿されたグラウンド面及びアンテナ面を有するパッチアンテナであって、前記アンテナ面には、前記誘電体を露出させる開口が設けられており、前記開口は、前記アンテナ面のうち該開口を介して露出する誘電体によって画される領域が送受信素子に対する整合回路を形成するように構成されたパッチアンテナを提供する。 In order to achieve the above object, the present invention provides a patch antenna having a ground surface and an antenna surface through which a dielectric is interposed, and the antenna surface is provided with an opening for exposing the dielectric. The opening provides a patch antenna configured such that a region defined by a dielectric exposed through the opening on the antenna surface forms a matching circuit for a transmitting / receiving element.
好ましくは、前記アンテナ面における前記領域は、一端部が前記アンテナ面のうち高周波電圧の低い部位に近接される。
前記開口が、互いに対向するように平行に延びる一対の第１スリットと、該一対の第１スリットを連通する第２スリットとを有する態様においては、前記第２スリットを挟んだ一方側及び他方側が、前記送受信素子の一対の接続端子にそれぞれ接続される。
Preferably, one end of the region on the antenna surface is close to a portion of the antenna surface where the high-frequency voltage is low.
In an aspect in which the opening includes a pair of first slits extending in parallel so as to face each other and a second slit communicating the pair of first slits, one side and the other side sandwiching the second slit are , And a pair of connection terminals of the transmission / reception element, respectively.
又、本発明は、誘電体が介挿されたグラウンド面及びアンテナ面を有するパッチアンテナと、一対の接続端子を有する送受信素子とを備えたＲＦＩＤインレットであって、前記アンテナ面には、前記誘電体を露出させる開口であって、互いに対向するように平行に延びる一対の第１スリットと、該一対の第１スリットを連通する第２スリットとを有する開口が形成され、前記アンテナ面のうち前記開口を介して露出する誘電体によって画される領域は、一端部が前記アンテナ面のうち高周波電圧の低い部位に近接されており、前記送受信素子は、前記一対の接続端子が前記第２スリットを挟んだ一方側及び他方側において前記アンテナ面に接続されているＲＦＩＤインレットを提供する。 The present invention also provides an RFID inlet comprising a patch antenna having a ground surface and an antenna surface through which a dielectric is inserted, and a transmission / reception element having a pair of connection terminals. An opening that exposes the body and has a pair of first slits extending in parallel so as to face each other and a second slit that communicates with the pair of first slits; One end of the region defined by the dielectric exposed through the opening is close to a portion of the antenna surface where the high-frequency voltage is low, and the transmitting / receiving element includes the pair of connection terminals that pass through the second slit. An RFID inlet is provided that is connected to the antenna surface on one side and the other side of the sandwich.
好ましくは、前記第２スリットが、前記高周波電圧の低い部位に近接される。
前記アンテナ面が、前記第１スリットと平行な長さ方向の距離がＬで、且つ、前記第１スリットと直交する幅方向の距離がＷの矩形とされた場合においては、例えば、前記アンテナ面における前記領域は、一端部が、長さ方向に関し、Ｌ／２を基準にして±Ｌ×０．１の範囲内に位置するように形成される。
これに代えて、前記アンテナ面が、前記第１スリットと平行な長さ方向の距離がＬの円形又は楕円形とされる場合においては、例えば、前記アンテナ面における前記領域は、一端部が、長さ方向に関し、Ｌ／２を基準にして±Ｌ×０．１の範囲内に位置するように形成される。
Preferably, the second slit is close to a portion where the high-frequency voltage is low.
When the antenna surface is a rectangle whose length in the length direction parallel to the first slit is L and whose distance in the width direction perpendicular to the first slit is W, for example, the antenna surface The region is formed so that one end thereof is located within a range of ± L × 0.1 with respect to L / 2 with respect to the length direction.
Instead, in the case where the antenna surface is circular or elliptical with a length in the length direction parallel to the first slit, for example, the region of the antenna surface has one end portion, With respect to the length direction, it is formed so as to be located within a range of ± L × 0.1 with reference to L / 2.
本発明に係るパッチアンテナによれば、アンテナ面に、誘電体を露出させる開口を設け、前記アンテナ面のうち該開口を介して露出する誘電体によって画される領域が送受信素子に対する整合回路を形成するように構成したので、整合回路がアンテナ面の外部に設けられていた従来構成に比して、可及的な小型化を図ることができる。 According to the patch antenna of the present invention, an opening for exposing a dielectric is provided on the antenna surface, and a region defined by the dielectric exposed through the opening of the antenna surface forms a matching circuit for a transmitting / receiving element. Thus, as compared with the conventional configuration in which the matching circuit is provided outside the antenna surface, the size can be reduced as much as possible.
又、本発明に係るＲＦＩＤインレットによれば、アンテナ面に、誘電体を露出させる開口であって、互いに対向するように平行に延びる一対の第１スリットと、該一対の第１スリットを連通する第２スリットとを有する開口を形成し、前記アンテナ面のうち前記開口を介して露出する誘電体によって画される領域を、一端部が前記アンテナ面のうち高周波電圧の低い部位に近接させ、送受信素子の一対の接続端子を前記第２スリットを挟んだ一方側及び他方側において前記アンテナ面に接続させたので、整合回路がアンテナ面の外部に設けられていた従来構成に比して、可及的な小型化が図れると共に、前記送受信素子の一対の接続端子を同一平面内で接続させることができ、該送受信素子の接続作業を極めて効率化することができる。 In addition, according to the RFID inlet of the present invention, a pair of first slits, which are openings for exposing a dielectric on the antenna surface and extend in parallel so as to face each other, communicate with the pair of first slits. An opening having a second slit is formed, and a region defined by a dielectric exposed through the opening in the antenna surface is made close to a portion of the antenna surface where the high-frequency voltage is low, to transmit and receive Since the pair of connection terminals of the element are connected to the antenna surface on one side and the other side across the second slit, the matching circuit is possible as compared with the conventional configuration in which the matching circuit is provided outside the antenna surface. Thus, the pair of connection terminals of the transmission / reception element can be connected in the same plane, and the connection work of the transmission / reception element can be made extremely efficient.
以下に、本発明に係るパッチアンテナの好ましい実施の形態につき、添付図面を参照しつつ説明する。
図１は、本実施の形態に係るパッチアンテナ１の斜視図である。
又、図２は、図１におけるII部拡大平面図である。
Hereinafter, a preferred embodiment of a patch antenna according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a perspective view of a patch antenna 1 according to the present embodiment.
FIG. 2 is an enlarged plan view of a portion II in FIG.
前記パッチアンテナ１は、電気的に接続されるＩＣチップ等の送受信素子（図示せず）と共働して、外部に対して信号を送受信するＲＦＩＤインレットを形成する。 The patch antenna 1 forms an RFID inlet for transmitting / receiving a signal to / from the outside in cooperation with a transmitting / receiving element (not shown) such as an IC chip that is electrically connected.
詳しくは、前記パッチアンテナ１は、導体によって形成されるグラウンド面１０と、該グラウンド面１０上に載置された誘電体２０と、該誘電体２０を挟んで前記グラウンド面１０に対して略平行に配置されたアンテナ面３０とを備えている。 Specifically, the patch antenna 1 includes a ground plane 10 formed of a conductor, a dielectric 20 placed on the ground plane 10, and substantially parallel to the ground plane 10 with the dielectric 20 interposed therebetween. The antenna surface 30 is provided.
前記グラウンド面１０は、例えば、前記誘電体２０中の電磁波の波長をλとした場合に、１λ以上の矩形より大きな面積を有するＡｌ又はＣｕ等の導体（好ましくは金属）によって形成される。
前記アンテナ面３０は、例えば、前記誘電体２０中の電磁波の波長をλとした場合に、０．５λ〜１．５λ×０．５λ〜１．５λの矩形状、若しくは、円形状又は楕円形状等の非矩形状に形成された厚さ０．００１ｍｍ〜１ｍｍのＡＬ又はＣｕ等の導体（好ましくは金属）によって形成される。
又、前記誘電体２０は、例えば、厚さ０．１ｍｍ〜３ｍｍのＦＲ−４（比誘電率εr＝４．２〜４．８）等の絶縁物によって形成される。
For example, when the wavelength of the electromagnetic wave in the dielectric 20 is λ, the ground surface 10 is formed of a conductor (preferably metal) such as Al or Cu having an area larger than a rectangle of 1λ or more.
The antenna surface 30 is, for example, a rectangular shape of 0.5λ to 1.5λ × 0.5λ to 1.5λ, or a circular shape or an elliptical shape when the wavelength of the electromagnetic wave in the dielectric 20 is λ. It is formed by a conductor (preferably metal) such as AL or Cu having a thickness of 0.001 mm to 1 mm formed in a non-rectangular shape.
The dielectric 20 is formed of an insulator such as FR-4 (relative permittivity εr = 4.2 to 4.8) having a thickness of 0.1 mm to 3 mm.
本実施の形態においては、図２に示すように、前記アンテナ面３０には、前記誘電体２０の一部を露出させる開口３１が形成されている。
該開口３１は、前記アンテナ面３０のうち該開口３１を介して露出する誘電体２０によって画される領域（以下、整合領域３５という）が、前記送受信素子に対する整合回路を形成するように構成されている。
詳しくは、図２に示すように、前記開口は、互いに対向するように平行に延びる一対の第１スリット３１ａと、該一対のスリット３１ａを連通する第２スリット３１ｂとを有している。
In the present embodiment, as shown in FIG. 2, an opening 31 for exposing a part of the dielectric 20 is formed in the antenna surface 30.
The opening 31 is configured such that a region defined by the dielectric 20 exposed through the opening 31 in the antenna surface 30 (hereinafter referred to as a matching region 35) forms a matching circuit for the transmitting / receiving element. ing.
Specifically, as shown in FIG. 2, the opening includes a pair of first slits 31a extending in parallel so as to face each other, and a second slit 31b communicating with the pair of slits 31a.
前記開口３１は、前記整合領域３５の一端部が前記アンテナ面３０のうち高周波電圧の低い部位（以下、低電圧部位という）に近接するように形成され、これにより、該整合領域３５が前記整合回路を構成するようになっている。
前記低電圧部位は、例えば、前記アンテナ面３０における高周波電圧の最大値をＶmaxとし、且つ、最小値Ｖminとした場合に、電圧Ｖが、
Ｖmin≦Ｖ≦Ｖmin＋（Ｖmax−Ｖmin）×α（但し、０＜α＜１）
の条件を満たす部位と定義することができる。
前記αはＲＦＩＤインレットに求められる性能に応じて決定されるが、０．２、より好ましくは、０．１とされる。
The opening 31 is formed so that one end portion of the matching region 35 is close to a portion of the antenna surface 30 where the high-frequency voltage is low (hereinafter, referred to as a low-voltage portion). A circuit is configured.
For example, when the maximum value of the high-frequency voltage on the antenna surface 30 is Vmax and the minimum value Vmin is used as the low voltage portion, the voltage V is
Vmin ≦ V ≦ Vmin + (Vmax−Vmin) × α (where 0 <α <1)
It can be defined as a part satisfying the condition.
The α is determined according to the performance required for the RFID inlet, but is preferably 0.2, more preferably 0.1.
これに代えて、本実施の形態におけるように、前記アンテナ面３０が、前記第１スリット３１ａと平行な長さ方向Ｌに沿って延びる長さａの辺ａ１，ａ２と、前記第１スリット３１ａに直交する幅方向Ｗに沿って延びる長さｂの辺ｂ１，ｂ２とを有する矩形状とされている場合には、前記低電圧部位は、長さ方向Ｌに関する中心線Ｃ（辺ｂ１からａ／２だけ離間され、且つ、該辺ｂ１に平行な仮想線）を基準にして、長さａの±２０％、より好ましくは、±１０％の領域と、擬制することができる。
即ち、辺ｂ１からの長手方向の距離Ｐが、
（ａ／２）−ａ×０．２≦Ｐ≦（ａ／２）＋ａ×０．２
より好ましくは、
（ａ／２）−ａ×０．１≦Ｐ≦（ａ／２）＋ａ×０．１
によって画される領域を、前記低電圧部位と擬制することができる。
Instead, as in the present embodiment, the antenna surface 30 has sides a1 and a2 having a length a extending along the length direction L parallel to the first slit 31a, and the first slit 31a. In the case of a rectangular shape having sides b1 and b2 having a length b extending along the width direction W orthogonal to the low-voltage portion, the low-voltage portion has a center line C (from the sides b1 to a in the length direction L). (An imaginary line separated by / 2 and parallel to the side b1) as a reference) can be assumed to be an area of ± 20%, more preferably ± 10% of the length a.
That is, the longitudinal distance P from the side b1 is
(A / 2) −a × 0.2 ≦ P ≦ (a / 2) + a × 0.2
More preferably,
(A / 2) −a × 0.1 ≦ P ≦ (a / 2) + a × 0.1
The region defined by the above can be simulated as the low voltage portion.
図示の形態においては、前記第２スリット３１ｂは、前記一対の第１スリット３１ａの一端部に配置されている。
斯かる形態においては、前記一対の第１スリット３１ａの他端部と前記第２スリット３１ｂとの間において、該一対の第１スリット３１ａに挟まれる領域が前記整合領域３５を構成している。
In the illustrated form, the second slit 31b is disposed at one end of the pair of first slits 31a.
In such a form, a region sandwiched between the pair of first slits 31 a between the other end of the pair of first slits 31 a and the second slit 31 b constitutes the matching region 35.
なお、本実施の形態においては、前述の通り、前記アンテナ面３０を矩形状としたが、当然ながら、該アンテナ面３０は斯かる形態に限定されるものではない。
例えば、該アンテナ面３０を円形状又は楕円形状とすることも可能である。
斯かる場合には、第１スリット３１ａと平行な長さ方向に関する中心線（円形又は楕円形の中心を通り、且つ、第１スリット３１ａと直交する直線）を基準にして、長さ方向の距離ａの±２０％（より好ましくは、±１０％）の範囲内を、前記低電圧部位と擬制することができる。
In the present embodiment, as described above, the antenna surface 30 has a rectangular shape, but the antenna surface 30 is naturally not limited to such a form.
For example, the antenna surface 30 can be circular or elliptical.
In such a case, the distance in the length direction with reference to the center line (the straight line passing through the center of the circle or ellipse and perpendicular to the first slit 31a) in the length direction parallel to the first slit 31a. The range of ± 20% of a (more preferably ± 10%) can be assumed as the low voltage region.
前記送受信素子は、前記整合回路を介して前記アンテナ面３０に接続される。
具体的には、前記送受信素子は、一対の接続端子が、前記第２スリット３１ｂを挟んで一方側及び他方側にそれぞれ位置する第１給電点４１及び第２給電点４２（図２参照）において、前記アンテナ面３０に接続されている。
The transmitting / receiving element is connected to the antenna surface 30 through the matching circuit.
Specifically, the transmission / reception element includes a pair of connection terminals at a first feeding point 41 and a second feeding point 42 (see FIG. 2), which are located on one side and the other side, respectively, across the second slit 31b. , Connected to the antenna surface 30.
このように本実施の形態に係るパッチアンテナ１においては、前記アンテナ面３０に前記誘電体２０を露出させる開口３１を設け、該開口によって露出する誘電体２０によって画される前記整合領域３５を、送受信素子に対する整合回路として用いており、従って、整合回路がアンテナ面の外部に設けられた従来構成（図８参照）に比して、可及的な小型化を図ることができる。 Thus, in the patch antenna 1 according to the present embodiment, the antenna surface 30 is provided with the opening 31 for exposing the dielectric 20, and the matching region 35 defined by the dielectric 20 exposed by the opening is As a matching circuit for the transmission / reception element, the matching circuit can be miniaturized as much as possible as compared with the conventional configuration (see FIG. 8) in which the matching circuit is provided outside the antenna surface.
又、本実施の形態においては、前述の通り、前記第２スリット３１ｂを挟んで一方側及び他方側にそれぞれ位置する第１及び第２給電点４１，４２において、前記送受信素子の一対の接続端子を前記アンテナ面３０に接続可能としており、該送受信素子の一対の接続端子が同一平面内において接続されるようになっている。
従って、一対の接続端子が、それぞれ、誘電体の厚みに相当する距離だけ上下に離間されたグラウンド面及びアンテナ面に接続される従来構成（図８参照）に比して、送受信素子の接続作業を極めて簡略化及び効率化することができる。
Further, in the present embodiment, as described above, a pair of connection terminals of the transmitting / receiving element at the first and second feeding points 41 and 42 respectively located on one side and the other side across the second slit 31b. Can be connected to the antenna surface 30 and a pair of connection terminals of the transmitting and receiving elements are connected in the same plane.
Therefore, compared to the conventional configuration (see FIG. 8) in which the pair of connection terminals are connected to the ground plane and the antenna plane that are separated from each other by a distance corresponding to the thickness of the dielectric, the transmission / reception element connection operation is performed. Can be greatly simplified and made efficient.
さらに、本実施の形態においては、図２に示すように、前記第２スリット３１ｂが、前記低電圧部位に近接するように、前記開口３１を形成している。
斯かる構成によれば、前記第１給電点４１が前記低電圧部位に位置することになり、該第１給電点４１に接続される前記送受信素子における一方の接続端子が、グラウンド電圧に近い状態とされる。
従って、本実施の形態に係るパッチアンテナ１の性能を、従来のパッチアンテナが持つ性能と同等とすることができる。
Further, in the present embodiment, as shown in FIG. 2, the opening 31 is formed so that the second slit 31b is close to the low voltage region.
According to such a configuration, the first feeding point 41 is located in the low voltage region, and one connection terminal of the transmitting / receiving element connected to the first feeding point 41 is close to the ground voltage. It is said.
Therefore, the performance of the patch antenna 1 according to the present embodiment can be made equal to the performance of the conventional patch antenna.
なお、本実施の形態においては、前述の通り、前記第２スリット３１ｂが前記低電圧部位に近接するように、該第２スリット３１ｂをアンテナ面３０の長手方向中心線Ｃの近傍に位置させたが（図２参照）、これに代えて、前記第２スリット３１ｂを前記第一対の第１スリットの他端部（アンテナ面３０の長手方向中心線Ｃから離間された側の端部）に位置させたり（図３参照）、前記第２スリット３１ｂを前記一対の第１スリット３１ａの中間部に位置させることも可能である（図４参照）。 In the present embodiment, as described above, the second slit 31b is positioned in the vicinity of the longitudinal center line C of the antenna surface 30 so that the second slit 31b is close to the low voltage portion. (Refer to FIG. 2) Instead, the second slit 31b is connected to the other end of the first pair of first slits (the end on the side separated from the longitudinal center line C of the antenna surface 30). Alternatively, the second slit 31b can be positioned in the middle of the pair of first slits 31a (see FIG. 4).
図３に示す形態においては、前記一対の第１スリット３１ａの一端部と前記第２スリット３１ｂとの間において、該一対の第１スリット３１ａによって挟まれる領域が、前記整合回路として作用する前記整合領域３５となる。
又、図４に示す形態においては、前記一対の第１スリット３１ａの他端部と前記第２スリット３１ｂとの間において、該一対の第１スリット３１ａによって挟まれる領域３６と、前記一対の第１スリット３１ａの一端部と前記第２スリット３１ｂとの間において、該一対の第１スリット３１ａによって挟まれる領域３７とが、前記整合回路として作用する前記整合領域３５となる。
なお、図３及び図４に示す何れの形態においても、前記第１及び第２給電点４１，４２は、前記第２スリット３１ｂを挟んで両側に配置される。
In the form shown in FIG. 3, a region sandwiched between the pair of first slits 31a between the one end of the pair of first slits 31a and the second slit 31b functions as the matching circuit. Region 35 is formed.
In the embodiment shown in FIG. 4, the region 36 sandwiched between the pair of first slits 31a and the pair of first slits 31a between the other end of the pair of first slits 31a and the second slit 31b. Between one end of one slit 31a and the second slit 31b, a region 37 sandwiched between the pair of first slits 31a is the matching region 35 that functions as the matching circuit.
3 and 4, the first and second feeding points 41 and 42 are arranged on both sides of the second slit 31b.
ここで、本実施の形態に係るパッチアンテナ１の一実施例に関して電磁界シミュレータを用いて行った解析結果について説明する。
図５に、本解析に用いたアンテナ面３０の平面寸法を示す。
該アンテナ面３０は、ＡＬによって形成されるものとし、長手方向Ｌに沿った辺ａ１及び辺ａ２の長さａ及び幅方向Ｗに沿った辺ｂ１及び辺ｂ２の長さｂは共に２６．４ｍｍとした。
又、前記一対の第１スリット３１ａは長さｍが７．２ｍｍで、該一対の第１スリット３１ａの間隔は、それぞれの外側のエッジ間の間隔ｄを４ｍｍとした。
そして、前記第２スリット３１ｂの幅を０．４ｍｍとすると共に、該第２スリット３１ｂをアンテナ面３０の長手方向中心線Ｃに整列させた。
Here, the analysis result performed using the electromagnetic field simulator regarding one example of the patch antenna 1 according to the present embodiment will be described.
FIG. 5 shows the planar dimensions of the antenna surface 30 used in this analysis.
The antenna surface 30 is formed by AL, and the length a of the side a1 and the side a2 along the longitudinal direction L and the length b of the side b1 and the side b2 along the width direction W are both 26.4 mm. It was.
The pair of first slits 31a has a length m of 7.2 mm, and the distance between the pair of first slits 31a is 4 mm between the outer edges.
The width of the second slit 31b was set to 0.4 mm, and the second slit 31b was aligned with the longitudinal center line C of the antenna surface 30.
前記誘電体２０の材質はＦＲ−４（比誘電率εr＝４．７）で、送受信素子５０のインピーダンスは9.5−j56（Ω）とし、上部が自由空間とされた金属ボックス内に、前記アンテナ面３０及び前記送受信素子５０を配置させた。 The material of the dielectric 20 is FR-4 (relative permittivity εr = 4.7), the impedance of the transmitting / receiving element 50 is 9.5-j56 (Ω), and the antenna is placed in a metal box whose upper part is free space. The surface 30 and the transmitting / receiving element 50 were disposed.
図６に、前記アンテナ面における電流密度分布を示す。
前記アンテナ面３０の長手方向Ｌに沿って、辺ｂ１から辺ｂ２へ向かって電流の波が生じており、長手方向Ｌに関する中心線Ｃ近傍で電流が最大（即ち、高周波電圧が最小）となっている。
斯かる中心線Ｃ近傍が前記低電位部位である。
なお、辺ｂ１及び辺ｂ２において、高周波電圧が最大となるが、その極性は逆である。
FIG. 6 shows a current density distribution on the antenna surface.
A wave of current is generated from the side b1 to the side b2 along the longitudinal direction L of the antenna surface 30, and the current becomes maximum (that is, the high-frequency voltage is minimum) in the vicinity of the center line C with respect to the longitudinal direction L. ing.
The vicinity of the center line C is the low potential portion.
In addition, in the side b1 and the side b2, the high frequency voltage becomes maximum, but the polarity is reversed.
又、図７に、本解析に用いたアンテナ面３０及び送受信素子５０の放射特性を示す。
図７は、far field と呼ばれるもので、前記アンテナ面３０及び送受信素子５０によって構成されるＲＦＩＤインレットから、上方へ離間された場所における電界強度を角度別にプロットしたものである。
図７中のプロット○は、辺ａ１及び辺ａ２に接離する方向に沿った角度別の値であり、プロット□は、辺ｂ１及び辺ｂ２に接離する方向に沿った角度別の値である。
FIG. 7 shows the radiation characteristics of the antenna surface 30 and the transmitting / receiving element 50 used in this analysis.
FIG. 7 is a field called a far field, in which the electric field strength at a location spaced upward from the RFID inlet constituted by the antenna surface 30 and the transmitting / receiving element 50 is plotted by angle.
Plot ◯ in FIG. 7 is a value for each angle along the direction contacting / separating the sides a1 and a2, and a plot □ is a value for each angle along the direction contacting / separating the sides b1 and b2. is there.
図７から明らかなように、本実施の形態に係るパッチアンテナ１は、ほぼ３〜６ｄＢiの利得があり、良好な放射特性が得られることが確認できる。
グラウンド面に対して垂直方向に特に良好な利得が得られると共に、かなり低い打ち上げ角においても十分な利得が得られている。
As is apparent from FIG. 7, the patch antenna 1 according to the present embodiment has a gain of approximately 3 to 6 dBi, and it can be confirmed that good radiation characteristics can be obtained.
A particularly good gain is obtained in a direction perpendicular to the ground surface, and a sufficient gain is obtained even at a considerably low launch angle.
１ パッチアンテナ
１０ グラウンド面
２０ 誘電体
３０ アンテナ面
３１ 開口
３１ａ 一対の第１スリット
３１ｂ 第２スリット
４１，４２ 給電点（送受信素子とパッチアンテナとの接続点）
DESCRIPTION OF SYMBOLS 1 Patch antenna 10 Ground surface 20 Dielectric 30 Antenna surface 31 Opening 31a A pair of 1st slit 31b 2nd slits 41 and 42 Feeding point (connection point of a transmission / reception element and a patch antenna)
Claims (7)
前記アンテナ面には、前記誘電体を露出させる開口が設けられており、
前記開口は、前記アンテナ面のうち該開口を介して露出する誘電体によって画される領域が送受信素子に対する整合回路を形成するように構成されていることを特徴とするパッチアンテナ。 A patch antenna having a ground surface and an antenna surface with a dielectric interposed therebetween,
The antenna surface is provided with an opening for exposing the dielectric,
The patch antenna is configured so that a region defined by a dielectric exposed through the opening on the antenna surface forms a matching circuit for a transmission / reception element.
前記第２スリットを挟んだ一方側及び他方側が、前記送受信素子の一対の接続端子にそれぞれ接続されることを特徴とする請求項１又は２に記載のパッチアンテナ。 The opening has a pair of first slits extending in parallel so as to face each other, and a second slit communicating the pair of first slits,
3. The patch antenna according to claim 1, wherein one side and the other side across the second slit are connected to a pair of connection terminals of the transmission / reception element, respectively.
前記アンテナ面には、前記誘電体を露出させる開口であって、互いに対向するように平行に延びる一対の第１スリットと、該一対の第１スリットを連通する第２スリットとを有する開口が形成され、
前記アンテナ面のうち前記開口を介して露出する誘電体によって画される領域は、一端部が前記アンテナ面のうち高周波電圧の低い部位に近接されており、
前記送受信素子は、前記一対の接続端子が前記第２スリットを挟んだ一方側及び他方側において前記アンテナ面に接続されていることを特徴とするＲＦＩＤインレット。 An RFID inlet comprising a patch antenna having a ground surface and an antenna surface through which a dielectric is inserted, and a transmitting / receiving element having a pair of connection terminals,
An opening that exposes the dielectric and has a pair of first slits extending in parallel to face each other and a second slit that communicates with the pair of first slits is formed on the antenna surface. And
The region defined by the dielectric exposed through the opening in the antenna surface has one end close to a portion of the antenna surface where the high-frequency voltage is low,
The RFID inlet, wherein the transmitting / receiving element has the pair of connection terminals connected to the antenna surface on one side and the other side across the second slit.
前記アンテナ面における前記領域は、一端部が、長さ方向に関し、Ｌ／２を基準にして±Ｌ×０．１の範囲内に位置することを特徴とする請求項４又は５に記載のＲＦＩＤインレット。 The antenna surface is a rectangle whose length in the length direction parallel to the first slit is L and whose distance in the width direction perpendicular to the first slit is W,
6. The RFID according to claim 4, wherein one end of the region on the antenna surface is located within a range of ± L × 0.1 with respect to L / 2 with respect to the length direction. Inlet.
前記アンテナ面における前記領域は、一端部が、長さ方向に関し、Ｌ／２を基準にして±Ｌ×０．１の範囲内に位置することを特徴とする請求項４又は５に記載のＲＦＩＤインレット。
The antenna surface has a circular or elliptical shape with a distance L in the length direction parallel to the first slit,
6. The RFID according to claim 4, wherein one end of the region on the antenna surface is located within a range of ± L × 0.1 with respect to L / 2 with respect to the length direction. Inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005045088A JP2006237674A (en) | 2005-02-22 | 2005-02-22 | Patch antenna and rfid inlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005045088A JP2006237674A (en) | 2005-02-22 | 2005-02-22 | Patch antenna and rfid inlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2006237674A true JP2006237674A (en) | 2006-09-07 |
Family
ID=37044895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005045088A Pending JP2006237674A (en) | 2005-02-22 | 2005-02-22 | Patch antenna and rfid inlet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2006237674A (en) |
Cited By (85)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007102360A1 (en) | 2006-03-06 | 2007-09-13 | Mitsubishi Electric Corporation | Rfid tag, method for manufacturing rfid tag and method for arranging rfid tag |
| EP2031698A1 (en) | 2007-08-30 | 2009-03-04 | Fujitsu Limited | Tag antenna and tag |
| WO2009031267A1 (en) | 2007-09-04 | 2009-03-12 | Mitsubishi Electric Corporation | Rfid tag |
| JP2009059287A (en) * | 2007-09-03 | 2009-03-19 | Mitsubishi Electric Corp | Method for manufacturing rfid tag |
| JP2009071882A (en) * | 2009-01-05 | 2009-04-02 | Mitsubishi Electric Corp | Rfid tag |
| JP2009231870A (en) * | 2008-02-27 | 2009-10-08 | Mitsubishi Electric Corp | Rfid tag and method of manufacturing the same |
| JP2010109692A (en) * | 2008-10-30 | 2010-05-13 | Mitsubishi Electric Corp | Rfid tag |
| US7857230B2 (en) | 2007-07-18 | 2010-12-28 | Murata Manufacturing Co., Ltd. | Wireless IC device and manufacturing method thereof |
| US7967216B2 (en) | 2008-05-22 | 2011-06-28 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| JP2011142681A (en) * | 2011-04-04 | 2011-07-21 | Mitsubishi Electric Corp | Rfid tag |
| US8011589B2 (en) | 2008-06-25 | 2011-09-06 | Murata Manufacturing Co., Ltd. | Wireless IC device and manufacturing method thereof |
| US8177138B2 (en) | 2008-10-29 | 2012-05-15 | Murata Manufacturing Co., Ltd. | Radio IC device |
| US8179329B2 (en) | 2008-03-03 | 2012-05-15 | Murata Manufacturing Co., Ltd. | Composite antenna |
| US8191791B2 (en) | 2007-07-17 | 2012-06-05 | Murata Manufacturing Co., Ltd. | Wireless IC device and electronic apparatus |
| US8228765B2 (en) | 2006-06-30 | 2012-07-24 | Murata Manufacturing Co., Ltd. | Optical disc |
| US8299929B2 (en) | 2006-09-26 | 2012-10-30 | Murata Manufacturing Co., Ltd. | Inductively coupled module and item with inductively coupled module |
| US8326223B2 (en) | 2006-01-19 | 2012-12-04 | Murata Manufacturing Co., Ltd. | Wireless IC device and component for wireless IC device |
| US8336786B2 (en) | 2010-03-12 | 2012-12-25 | Murata Manufacturing Co., Ltd. | Wireless communication device and metal article |
| US8342416B2 (en) | 2009-01-09 | 2013-01-01 | Murata Manufacturing Co., Ltd. | Wireless IC device, wireless IC module and method of manufacturing wireless IC module |
| US8360330B2 (en) | 2007-12-26 | 2013-01-29 | Murata Manufacturing Co., Ltd. | Antenna device and radio frequency IC device |
| US8360325B2 (en) | 2008-04-14 | 2013-01-29 | Murata Manufacturing Co., Ltd. | Wireless IC device, electronic apparatus, and method for adjusting resonant frequency of wireless IC device |
| US8360324B2 (en) | 2007-04-09 | 2013-01-29 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8381997B2 (en) | 2009-06-03 | 2013-02-26 | Murata Manufacturing Co., Ltd. | Radio frequency IC device and method of manufacturing the same |
| US8400307B2 (en) | 2007-07-18 | 2013-03-19 | Murata Manufacturing Co., Ltd. | Radio frequency IC device and electronic apparatus |
| US8400365B2 (en) | 2009-11-20 | 2013-03-19 | Murata Manufacturing Co., Ltd. | Antenna device and mobile communication terminal |
| US8418928B2 (en) | 2009-04-14 | 2013-04-16 | Murata Manufacturing Co., Ltd. | Wireless IC device component and wireless IC device |
| US8424769B2 (en) | 2010-07-08 | 2013-04-23 | Murata Manufacturing Co., Ltd. | Antenna and RFID device |
| US8424762B2 (en) | 2007-04-14 | 2013-04-23 | Murata Manufacturing Co., Ltd. | Wireless IC device and component for wireless IC device |
| US8531346B2 (en) | 2007-04-26 | 2013-09-10 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8546927B2 (en) | 2010-09-03 | 2013-10-01 | Murata Manufacturing Co., Ltd. | RFIC chip mounting structure |
| US8552870B2 (en) | 2007-07-09 | 2013-10-08 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8583043B2 (en) | 2009-01-16 | 2013-11-12 | Murata Manufacturing Co., Ltd. | High-frequency device and wireless IC device |
| US8590797B2 (en) | 2008-05-21 | 2013-11-26 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8596545B2 (en) | 2008-05-28 | 2013-12-03 | Murata Manufacturing Co., Ltd. | Component of wireless IC device and wireless IC device |
| US8602310B2 (en) | 2010-03-03 | 2013-12-10 | Murata Manufacturing Co., Ltd. | Radio communication device and radio communication terminal |
| US8610636B2 (en) | 2007-12-20 | 2013-12-17 | Murata Manufacturing Co., Ltd. | Radio frequency IC device |
| US8613395B2 (en) | 2011-02-28 | 2013-12-24 | Murata Manufacturing Co., Ltd. | Wireless communication device |
| US8668151B2 (en) | 2008-03-26 | 2014-03-11 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8680971B2 (en) | 2009-09-28 | 2014-03-25 | Murata Manufacturing Co., Ltd. | Wireless IC device and method of detecting environmental state using the device |
| US8692718B2 (en) | 2008-11-17 | 2014-04-08 | Murata Manufacturing Co., Ltd. | Antenna and wireless IC device |
| US8718727B2 (en) | 2009-12-24 | 2014-05-06 | Murata Manufacturing Co., Ltd. | Antenna having structure for multi-angled reception and mobile terminal including the antenna |
| US8720789B2 (en) | 2012-01-30 | 2014-05-13 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8740093B2 (en) | 2011-04-13 | 2014-06-03 | Murata Manufacturing Co., Ltd. | Radio IC device and radio communication terminal |
| US8757500B2 (en) | 2007-05-11 | 2014-06-24 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8770489B2 (en) | 2011-07-15 | 2014-07-08 | Murata Manufacturing Co., Ltd. | Radio communication device |
| US8797148B2 (en) | 2008-03-03 | 2014-08-05 | Murata Manufacturing Co., Ltd. | Radio frequency IC device and radio communication system |
| US8797225B2 (en) | 2011-03-08 | 2014-08-05 | Murata Manufacturing Co., Ltd. | Antenna device and communication terminal apparatus |
| US8810456B2 (en) | 2009-06-19 | 2014-08-19 | Murata Manufacturing Co., Ltd. | Wireless IC device and coupling method for power feeding circuit and radiation plate |
| US8814056B2 (en) | 2011-07-19 | 2014-08-26 | Murata Manufacturing Co., Ltd. | Antenna device, RFID tag, and communication terminal apparatus |
| US8853549B2 (en) | 2009-09-30 | 2014-10-07 | Murata Manufacturing Co., Ltd. | Circuit substrate and method of manufacturing same |
| US8870077B2 (en) | 2008-08-19 | 2014-10-28 | Murata Manufacturing Co., Ltd. | Wireless IC device and method for manufacturing same |
| US8878739B2 (en) | 2011-07-14 | 2014-11-04 | Murata Manufacturing Co., Ltd. | Wireless communication device |
| US8905296B2 (en) | 2011-12-01 | 2014-12-09 | Murata Manufacturing Co., Ltd. | Wireless integrated circuit device and method of manufacturing the same |
| US8905316B2 (en) | 2010-05-14 | 2014-12-09 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8937576B2 (en) | 2011-04-05 | 2015-01-20 | Murata Manufacturing Co., Ltd. | Wireless communication device |
| US8944335B2 (en) | 2010-09-30 | 2015-02-03 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| KR101495606B1 (en) | 2013-09-02 | 2015-02-26 | 주식회사 애니알에프 | High linearity micro-strip antenna |
| US8976075B2 (en) | 2009-04-21 | 2015-03-10 | Murata Manufacturing Co., Ltd. | Antenna device and method of setting resonant frequency of antenna device |
| US8981906B2 (en) | 2010-08-10 | 2015-03-17 | Murata Manufacturing Co., Ltd. | Printed wiring board and wireless communication system |
| US8991713B2 (en) | 2011-01-14 | 2015-03-31 | Murata Manufacturing Co., Ltd. | RFID chip package and RFID tag |
| US8994605B2 (en) | 2009-10-02 | 2015-03-31 | Murata Manufacturing Co., Ltd. | Wireless IC device and electromagnetic coupling module |
| US9024725B2 (en) | 2009-11-04 | 2015-05-05 | Murata Manufacturing Co., Ltd. | Communication terminal and information processing system |
| US9024837B2 (en) | 2010-03-31 | 2015-05-05 | Murata Manufacturing Co., Ltd. | Antenna and wireless communication device |
| US9077067B2 (en) | 2008-07-04 | 2015-07-07 | Murata Manufacturing Co., Ltd. | Radio IC device |
| US9104950B2 (en) | 2009-01-30 | 2015-08-11 | Murata Manufacturing Co., Ltd. | Antenna and wireless IC device |
| US9123996B2 (en) | 2010-05-14 | 2015-09-01 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US9166291B2 (en) | 2010-10-12 | 2015-10-20 | Murata Manufacturing Co., Ltd. | Antenna device and communication terminal apparatus |
| US9165239B2 (en) | 2006-04-26 | 2015-10-20 | Murata Manufacturing Co., Ltd. | Electromagnetic-coupling-module-attached article |
| US9178279B2 (en) | 2009-11-04 | 2015-11-03 | Murata Manufacturing Co., Ltd. | Wireless IC tag, reader-writer, and information processing system |
| US9231305B2 (en) | 2008-10-24 | 2016-01-05 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US9236651B2 (en) | 2010-10-21 | 2016-01-12 | Murata Manufacturing Co., Ltd. | Communication terminal device |
| US9281873B2 (en) | 2008-05-26 | 2016-03-08 | Murata Manufacturing Co., Ltd. | Wireless IC device system and method of determining authenticity of wireless IC device |
| US9378452B2 (en) | 2011-05-16 | 2016-06-28 | Murata Manufacturing Co., Ltd. | Radio IC device |
| US9444143B2 (en) | 2009-10-16 | 2016-09-13 | Murata Manufacturing Co., Ltd. | Antenna and wireless IC device |
| US9461363B2 (en) | 2009-11-04 | 2016-10-04 | Murata Manufacturing Co., Ltd. | Communication terminal and information processing system |
| US9460376B2 (en) | 2007-07-18 | 2016-10-04 | Murata Manufacturing Co., Ltd. | Radio IC device |
| US9460320B2 (en) | 2009-10-27 | 2016-10-04 | Murata Manufacturing Co., Ltd. | Transceiver and radio frequency identification tag reader |
| US9543642B2 (en) | 2011-09-09 | 2017-01-10 | Murata Manufacturing Co., Ltd. | Antenna device and wireless device |
| US9558384B2 (en) | 2010-07-28 | 2017-01-31 | Murata Manufacturing Co., Ltd. | Antenna apparatus and communication terminal instrument |
| US9692128B2 (en) | 2012-02-24 | 2017-06-27 | Murata Manufacturing Co., Ltd. | Antenna device and wireless communication device |
| US9727765B2 (en) | 2010-03-24 | 2017-08-08 | Murata Manufacturing Co., Ltd. | RFID system including a reader/writer and RFID tag |
| US9761923B2 (en) | 2011-01-05 | 2017-09-12 | Murata Manufacturing Co., Ltd. | Wireless communication device |
| US10013650B2 (en) | 2010-03-03 | 2018-07-03 | Murata Manufacturing Co., Ltd. | Wireless communication module and wireless communication device |
| US10235544B2 (en) | 2012-04-13 | 2019-03-19 | Murata Manufacturing Co., Ltd. | Inspection method and inspection device for RFID tag |
| US11354558B2 (en) | 2013-01-18 | 2022-06-07 | Amatech Group Limited | Contactless smartcards with coupling frames |
-
2005
- 2005-02-22 JP JP2005045088A patent/JP2006237674A/en active Pending
Cited By (111)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8326223B2 (en) | 2006-01-19 | 2012-12-04 | Murata Manufacturing Co., Ltd. | Wireless IC device and component for wireless IC device |
| US8676117B2 (en) | 2006-01-19 | 2014-03-18 | Murata Manufacturing Co., Ltd. | Wireless IC device and component for wireless IC device |
| US8725071B2 (en) | 2006-01-19 | 2014-05-13 | Murata Manufacturing Co., Ltd. | Wireless IC device and component for wireless IC device |
| WO2007102360A1 (en) | 2006-03-06 | 2007-09-13 | Mitsubishi Electric Corporation | Rfid tag, method for manufacturing rfid tag and method for arranging rfid tag |
| US8368512B2 (en) | 2006-03-06 | 2013-02-05 | Mitsubishi Electric Corporation | RFID tag, method of manufacturing the RFID tag, and method of mounting the RFID tag |
| US9165239B2 (en) | 2006-04-26 | 2015-10-20 | Murata Manufacturing Co., Ltd. | Electromagnetic-coupling-module-attached article |
| US8228765B2 (en) | 2006-06-30 | 2012-07-24 | Murata Manufacturing Co., Ltd. | Optical disc |
| US8299929B2 (en) | 2006-09-26 | 2012-10-30 | Murata Manufacturing Co., Ltd. | Inductively coupled module and item with inductively coupled module |
| US8360324B2 (en) | 2007-04-09 | 2013-01-29 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8424762B2 (en) | 2007-04-14 | 2013-04-23 | Murata Manufacturing Co., Ltd. | Wireless IC device and component for wireless IC device |
| US8531346B2 (en) | 2007-04-26 | 2013-09-10 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8757500B2 (en) | 2007-05-11 | 2014-06-24 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8662403B2 (en) | 2007-07-04 | 2014-03-04 | Murata Manufacturing Co., Ltd. | Wireless IC device and component for wireless IC device |
| US8552870B2 (en) | 2007-07-09 | 2013-10-08 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8413907B2 (en) | 2007-07-17 | 2013-04-09 | Murata Manufacturing Co., Ltd. | Wireless IC device and electronic apparatus |
| US8191791B2 (en) | 2007-07-17 | 2012-06-05 | Murata Manufacturing Co., Ltd. | Wireless IC device and electronic apparatus |
| US9830552B2 (en) | 2007-07-18 | 2017-11-28 | Murata Manufacturing Co., Ltd. | Radio IC device |
| US9460376B2 (en) | 2007-07-18 | 2016-10-04 | Murata Manufacturing Co., Ltd. | Radio IC device |
| US8400307B2 (en) | 2007-07-18 | 2013-03-19 | Murata Manufacturing Co., Ltd. | Radio frequency IC device and electronic apparatus |
| US7857230B2 (en) | 2007-07-18 | 2010-12-28 | Murata Manufacturing Co., Ltd. | Wireless IC device and manufacturing method thereof |
| US7859414B2 (en) | 2007-08-30 | 2010-12-28 | Fujitsu Limited | Tag antenna and tag |
| EP2031698A1 (en) | 2007-08-30 | 2009-03-04 | Fujitsu Limited | Tag antenna and tag |
| JP2009059287A (en) * | 2007-09-03 | 2009-03-19 | Mitsubishi Electric Corp | Method for manufacturing rfid tag |
| JP4706677B2 (en) * | 2007-09-03 | 2011-06-22 | 三菱電機株式会社 | RFID tag manufacturing method |
| KR101108940B1 (en) | 2007-09-04 | 2012-02-09 | 미쓰비시덴키 가부시키가이샤 | Rfid tag |
| US8672230B2 (en) | 2007-09-04 | 2014-03-18 | Mitsubishi Electric Corporation | RFID tag |
| WO2009031267A1 (en) | 2007-09-04 | 2009-03-12 | Mitsubishi Electric Corporation | Rfid tag |
| US8610636B2 (en) | 2007-12-20 | 2013-12-17 | Murata Manufacturing Co., Ltd. | Radio frequency IC device |
| US8360330B2 (en) | 2007-12-26 | 2013-01-29 | Murata Manufacturing Co., Ltd. | Antenna device and radio frequency IC device |
| US8915448B2 (en) | 2007-12-26 | 2014-12-23 | Murata Manufacturing Co., Ltd. | Antenna device and radio frequency IC device |
| JP2009231870A (en) * | 2008-02-27 | 2009-10-08 | Mitsubishi Electric Corp | Rfid tag and method of manufacturing the same |
| US8179329B2 (en) | 2008-03-03 | 2012-05-15 | Murata Manufacturing Co., Ltd. | Composite antenna |
| US8797148B2 (en) | 2008-03-03 | 2014-08-05 | Murata Manufacturing Co., Ltd. | Radio frequency IC device and radio communication system |
| US8668151B2 (en) | 2008-03-26 | 2014-03-11 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8360325B2 (en) | 2008-04-14 | 2013-01-29 | Murata Manufacturing Co., Ltd. | Wireless IC device, electronic apparatus, and method for adjusting resonant frequency of wireless IC device |
| US8590797B2 (en) | 2008-05-21 | 2013-11-26 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8960557B2 (en) | 2008-05-21 | 2015-02-24 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8973841B2 (en) | 2008-05-21 | 2015-03-10 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US9022295B2 (en) | 2008-05-21 | 2015-05-05 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8047445B2 (en) | 2008-05-22 | 2011-11-01 | Murata Manufacturing Co., Ltd. | Wireless IC device and method of manufacturing the same |
| US7967216B2 (en) | 2008-05-22 | 2011-06-28 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US9281873B2 (en) | 2008-05-26 | 2016-03-08 | Murata Manufacturing Co., Ltd. | Wireless IC device system and method of determining authenticity of wireless IC device |
| US8596545B2 (en) | 2008-05-28 | 2013-12-03 | Murata Manufacturing Co., Ltd. | Component of wireless IC device and wireless IC device |
| US8011589B2 (en) | 2008-06-25 | 2011-09-06 | Murata Manufacturing Co., Ltd. | Wireless IC device and manufacturing method thereof |
| US9077067B2 (en) | 2008-07-04 | 2015-07-07 | Murata Manufacturing Co., Ltd. | Radio IC device |
| US8870077B2 (en) | 2008-08-19 | 2014-10-28 | Murata Manufacturing Co., Ltd. | Wireless IC device and method for manufacturing same |
| US9231305B2 (en) | 2008-10-24 | 2016-01-05 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8177138B2 (en) | 2008-10-29 | 2012-05-15 | Murata Manufacturing Co., Ltd. | Radio IC device |
| JP2010109692A (en) * | 2008-10-30 | 2010-05-13 | Mitsubishi Electric Corp | Rfid tag |
| US8692718B2 (en) | 2008-11-17 | 2014-04-08 | Murata Manufacturing Co., Ltd. | Antenna and wireless IC device |
| US8917211B2 (en) | 2008-11-17 | 2014-12-23 | Murata Manufacturing Co., Ltd. | Antenna and wireless IC device |
| JP2009071882A (en) * | 2009-01-05 | 2009-04-02 | Mitsubishi Electric Corp | Rfid tag |
| US8544759B2 (en) | 2009-01-09 | 2013-10-01 | Murata Manufacturing., Ltd. | Wireless IC device, wireless IC module and method of manufacturing wireless IC module |
| US8342416B2 (en) | 2009-01-09 | 2013-01-01 | Murata Manufacturing Co., Ltd. | Wireless IC device, wireless IC module and method of manufacturing wireless IC module |
| US8583043B2 (en) | 2009-01-16 | 2013-11-12 | Murata Manufacturing Co., Ltd. | High-frequency device and wireless IC device |
| US9104950B2 (en) | 2009-01-30 | 2015-08-11 | Murata Manufacturing Co., Ltd. | Antenna and wireless IC device |
| US8690070B2 (en) | 2009-04-14 | 2014-04-08 | Murata Manufacturing Co., Ltd. | Wireless IC device component and wireless IC device |
| US8876010B2 (en) | 2009-04-14 | 2014-11-04 | Murata Manufacturing Co., Ltd | Wireless IC device component and wireless IC device |
| US8418928B2 (en) | 2009-04-14 | 2013-04-16 | Murata Manufacturing Co., Ltd. | Wireless IC device component and wireless IC device |
| US9203157B2 (en) | 2009-04-21 | 2015-12-01 | Murata Manufacturing Co., Ltd. | Antenna device and method of setting resonant frequency of antenna device |
| US8976075B2 (en) | 2009-04-21 | 2015-03-10 | Murata Manufacturing Co., Ltd. | Antenna device and method of setting resonant frequency of antenna device |
| US9564678B2 (en) | 2009-04-21 | 2017-02-07 | Murata Manufacturing Co., Ltd. | Antenna device and method of setting resonant frequency of antenna device |
| US8381997B2 (en) | 2009-06-03 | 2013-02-26 | Murata Manufacturing Co., Ltd. | Radio frequency IC device and method of manufacturing the same |
| US8810456B2 (en) | 2009-06-19 | 2014-08-19 | Murata Manufacturing Co., Ltd. | Wireless IC device and coupling method for power feeding circuit and radiation plate |
| US8680971B2 (en) | 2009-09-28 | 2014-03-25 | Murata Manufacturing Co., Ltd. | Wireless IC device and method of detecting environmental state using the device |
| US8853549B2 (en) | 2009-09-30 | 2014-10-07 | Murata Manufacturing Co., Ltd. | Circuit substrate and method of manufacturing same |
| US8994605B2 (en) | 2009-10-02 | 2015-03-31 | Murata Manufacturing Co., Ltd. | Wireless IC device and electromagnetic coupling module |
| US9117157B2 (en) | 2009-10-02 | 2015-08-25 | Murata Manufacturing Co., Ltd. | Wireless IC device and electromagnetic coupling module |
| US9444143B2 (en) | 2009-10-16 | 2016-09-13 | Murata Manufacturing Co., Ltd. | Antenna and wireless IC device |
| US9460320B2 (en) | 2009-10-27 | 2016-10-04 | Murata Manufacturing Co., Ltd. | Transceiver and radio frequency identification tag reader |
| US9178279B2 (en) | 2009-11-04 | 2015-11-03 | Murata Manufacturing Co., Ltd. | Wireless IC tag, reader-writer, and information processing system |
| US9024725B2 (en) | 2009-11-04 | 2015-05-05 | Murata Manufacturing Co., Ltd. | Communication terminal and information processing system |
| US9461363B2 (en) | 2009-11-04 | 2016-10-04 | Murata Manufacturing Co., Ltd. | Communication terminal and information processing system |
| US8400365B2 (en) | 2009-11-20 | 2013-03-19 | Murata Manufacturing Co., Ltd. | Antenna device and mobile communication terminal |
| US8704716B2 (en) | 2009-11-20 | 2014-04-22 | Murata Manufacturing Co., Ltd. | Antenna device and mobile communication terminal |
| US8718727B2 (en) | 2009-12-24 | 2014-05-06 | Murata Manufacturing Co., Ltd. | Antenna having structure for multi-angled reception and mobile terminal including the antenna |
| US10013650B2 (en) | 2010-03-03 | 2018-07-03 | Murata Manufacturing Co., Ltd. | Wireless communication module and wireless communication device |
| US8602310B2 (en) | 2010-03-03 | 2013-12-10 | Murata Manufacturing Co., Ltd. | Radio communication device and radio communication terminal |
| US8528829B2 (en) | 2010-03-12 | 2013-09-10 | Murata Manufacturing Co., Ltd. | Wireless communication device and metal article |
| US8336786B2 (en) | 2010-03-12 | 2012-12-25 | Murata Manufacturing Co., Ltd. | Wireless communication device and metal article |
| US9727765B2 (en) | 2010-03-24 | 2017-08-08 | Murata Manufacturing Co., Ltd. | RFID system including a reader/writer and RFID tag |
| US9024837B2 (en) | 2010-03-31 | 2015-05-05 | Murata Manufacturing Co., Ltd. | Antenna and wireless communication device |
| US8905316B2 (en) | 2010-05-14 | 2014-12-09 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US9123996B2 (en) | 2010-05-14 | 2015-09-01 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US8424769B2 (en) | 2010-07-08 | 2013-04-23 | Murata Manufacturing Co., Ltd. | Antenna and RFID device |
| US9558384B2 (en) | 2010-07-28 | 2017-01-31 | Murata Manufacturing Co., Ltd. | Antenna apparatus and communication terminal instrument |
| US8981906B2 (en) | 2010-08-10 | 2015-03-17 | Murata Manufacturing Co., Ltd. | Printed wiring board and wireless communication system |
| US8546927B2 (en) | 2010-09-03 | 2013-10-01 | Murata Manufacturing Co., Ltd. | RFIC chip mounting structure |
| US8944335B2 (en) | 2010-09-30 | 2015-02-03 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US9166291B2 (en) | 2010-10-12 | 2015-10-20 | Murata Manufacturing Co., Ltd. | Antenna device and communication terminal apparatus |
| US9236651B2 (en) | 2010-10-21 | 2016-01-12 | Murata Manufacturing Co., Ltd. | Communication terminal device |
| US9761923B2 (en) | 2011-01-05 | 2017-09-12 | Murata Manufacturing Co., Ltd. | Wireless communication device |
| US8991713B2 (en) | 2011-01-14 | 2015-03-31 | Murata Manufacturing Co., Ltd. | RFID chip package and RFID tag |
| US8613395B2 (en) | 2011-02-28 | 2013-12-24 | Murata Manufacturing Co., Ltd. | Wireless communication device |
| US8757502B2 (en) | 2011-02-28 | 2014-06-24 | Murata Manufacturing Co., Ltd. | Wireless communication device |
| US8960561B2 (en) | 2011-02-28 | 2015-02-24 | Murata Manufacturing Co., Ltd. | Wireless communication device |
| US8797225B2 (en) | 2011-03-08 | 2014-08-05 | Murata Manufacturing Co., Ltd. | Antenna device and communication terminal apparatus |
| JP2011142681A (en) * | 2011-04-04 | 2011-07-21 | Mitsubishi Electric Corp | Rfid tag |
| US8937576B2 (en) | 2011-04-05 | 2015-01-20 | Murata Manufacturing Co., Ltd. | Wireless communication device |
| US8740093B2 (en) | 2011-04-13 | 2014-06-03 | Murata Manufacturing Co., Ltd. | Radio IC device and radio communication terminal |
| US9378452B2 (en) | 2011-05-16 | 2016-06-28 | Murata Manufacturing Co., Ltd. | Radio IC device |
| US8878739B2 (en) | 2011-07-14 | 2014-11-04 | Murata Manufacturing Co., Ltd. | Wireless communication device |
| US8770489B2 (en) | 2011-07-15 | 2014-07-08 | Murata Manufacturing Co., Ltd. | Radio communication device |
| US8814056B2 (en) | 2011-07-19 | 2014-08-26 | Murata Manufacturing Co., Ltd. | Antenna device, RFID tag, and communication terminal apparatus |
| US9543642B2 (en) | 2011-09-09 | 2017-01-10 | Murata Manufacturing Co., Ltd. | Antenna device and wireless device |
| US8905296B2 (en) | 2011-12-01 | 2014-12-09 | Murata Manufacturing Co., Ltd. | Wireless integrated circuit device and method of manufacturing the same |
| US8720789B2 (en) | 2012-01-30 | 2014-05-13 | Murata Manufacturing Co., Ltd. | Wireless IC device |
| US9692128B2 (en) | 2012-02-24 | 2017-06-27 | Murata Manufacturing Co., Ltd. | Antenna device and wireless communication device |
| US10235544B2 (en) | 2012-04-13 | 2019-03-19 | Murata Manufacturing Co., Ltd. | Inspection method and inspection device for RFID tag |
| US11354558B2 (en) | 2013-01-18 | 2022-06-07 | Amatech Group Limited | Contactless smartcards with coupling frames |
| KR101495606B1 (en) | 2013-09-02 | 2015-02-26 | 주식회사 애니알에프 | High linearity micro-strip antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2006237674A (en) | Patch antenna and rfid inlet | |
| KR100836213B1 (en) | Antenna, radio device, method of designing antenna, and method of measuring operating frequency of antenna | |
| US20080316110A1 (en) | Patch Antenna and RFID Inlet | |
| JP4831440B2 (en) | Planar antenna, communication device using the same, and card-type terminal | |
| EP1594187B1 (en) | Folded laminar antenna | |
| EP1533867A1 (en) | Circular polarization slot antenna apparatus capable of being easily miniaturized | |
| US20050057401A1 (en) | Small-size, low-height antenna device capable of easily ensuring predetermined bandwidth | |
| EP1653396A2 (en) | RFID tag | |
| WO2009048428A1 (en) | Antennas for diversity applications | |
| JP2006211040A (en) | Antenna device | |
| CN109219906A (en) | Antenna assembly | |
| KR101003014B1 (en) | Pcb layout structure for chip antenna and antenna device including that | |
| JP2002100915A (en) | Dielectric antenna | |
| JP2011077608A (en) | Antenna device | |
| JP2006245751A (en) | Patch antenna and rfid inlet | |
| RU2359377C1 (en) | Antenna of triple polarisation with dipoles of cloverleaf type | |
| JP2008113336A (en) | Wide-band omnidirectional antenna | |
| JPH11340726A (en) | Antenna device | |
| CN108140952B (en) | Antenna device | |
| US6765537B1 (en) | Dual uncoupled mode box antenna | |
| JP4053144B2 (en) | Dual-polarized antenna | |
| JPS60134605A (en) | Microstrip antenna | |
| TWI704723B (en) | Circularly-polarized small antenna for rfid reader | |
| WO2006028212A1 (en) | Surface implementation type antenna and wireless communication apparatus having the same | |
| EP1450437A1 (en) | Ring-shaped embedded antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20060919 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080704 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080818 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080905 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20090105 |