JP2008067131A - Antenna module and capsule endoscope system using the same, and method for manufacturing antenna module - Google Patents

Antenna module and capsule endoscope system using the same, and method for manufacturing antenna module Download PDF

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JP2008067131A
JP2008067131A JP2006243699A JP2006243699A JP2008067131A JP 2008067131 A JP2008067131 A JP 2008067131A JP 2006243699 A JP2006243699 A JP 2006243699A JP 2006243699 A JP2006243699 A JP 2006243699A JP 2008067131 A JP2008067131 A JP 2008067131A
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substrate
antenna module
antenna element
antenna
disposed
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JP4819626B2 (en
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Susumu Fukushima
奨 福島
Naoki Yuda
直毅 湯田
Junichi Kimura
潤一 木村
Nobuyuki Sakuma
信行 佐久間
Yasuteru Asakawa
恭輝 浅川
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To miniaturize an antenna module. <P>SOLUTION: To achieve the above task, the antenna module 5 has a substrate 6 and a coil-like antenna element 7 arranged on the substrate 6, wherein a part of the antenna element 7 is exposed to the upper surface of the substrate 6 and the other part of the antenna element 7 is arranged on the lower surface or inside of the substrate 6. By this configuration, the antenna module 5 is miniaturized since a part of the antenna element 7 is embedded inside the substrate 6. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、信号を送信または受信するアンテナモジュールとこれを用いたカプセル内視鏡システム及びアンテナモジュールの製造方法に関するものである。   The present invention relates to an antenna module for transmitting or receiving a signal, a capsule endoscope system using the antenna module, and a method for manufacturing the antenna module.

カプセル内視鏡システムにおいて生体内に留置されるカプセルのアンテナモジュールとして、生体の影響を受けにくい磁流型のアンテナ素子が用いられている。   As a capsule antenna module placed in a living body in a capsule endoscope system, a magnetic current type antenna element that is hardly affected by a living body is used.

以下、従来のアンテナモジュールについて図５を用いて説明する。   Hereinafter, a conventional antenna module will be described with reference to FIG.

図５において、従来のアンテナモジュール１は、カプセル２の内部に設けられ、基板３と基板３の上面に配置されたアンテナ素子４とを有していた。   In FIG. 5, the conventional antenna module 1 has a substrate 3 and an antenna element 4 disposed on the upper surface of the substrate 3 provided inside the capsule 2.

尚、この出願の発明に関連する先行技術文献の情報としては、例えば、特許文献１が知られている。
特開２００５−２７８８１５号公報 As information on prior art documents related to the invention of this application, for example, Patent Document 1 is known.
JP 2005-278815 A

上記従来のアンテナモジュールにおいて、アンテナ素子４の全体が基板３の上面に完全に露出していたので、アンテナモジュール１が大型になってしまい、その結果、カプセル２が大型になるという問題があった。   In the conventional antenna module, since the entire antenna element 4 is completely exposed on the upper surface of the substrate 3, the antenna module 1 becomes large, and as a result, the capsule 2 becomes large. .

そこで、本発明はアンテナモジュールを小型化することを目的とする。   Accordingly, an object of the present invention is to reduce the size of an antenna module.

上記目的を達成するために、本発明のアンテナモジュールは、基板と、この基板に配置されたアンテナ素子とを備え、このアンテナ素子の一部は、基板の上面に露出し、アンテナ素子の他の一部は、基板の下面又は内部に配置されている。   In order to achieve the above object, an antenna module of the present invention includes a substrate and an antenna element disposed on the substrate, and a part of the antenna element is exposed on the upper surface of the substrate, and other antenna elements are provided. A part is disposed on the lower surface or inside of the substrate.

上記構成により、アンテナ素子の一部が基板内部に埋設されているので、アンテナモジュールを小型化することができる。   With the above configuration, a part of the antenna element is embedded in the substrate, so that the antenna module can be reduced in size.

（実施の形態１）
以下、本発明における実施の形態１のアンテナモジュールについて図１を用いて説明する。図１（ａ）は、実施の形態１におけるアンテナモジュールの上面斜視図、図１（ｂ）は、同アンテナモジュールの下面斜視図である。 (Embodiment 1)
The antenna module according to Embodiment 1 of the present invention will be described below with reference to FIG. FIG. 1A is a top perspective view of the antenna module according to Embodiment 1, and FIG. 1B is a bottom perspective view of the antenna module.

図１において、アンテナモジュール５は、例えば、カプセル内視鏡システムにおけるカプセルの内部に配置され、基板６と、この基板６に配置されたコイル状のアンテナ素子７とを備える。尚、このアンテナ素子は、コイル状のアンテナ素子に限らず、生体の影響を受けにくい磁流型のアンテナ素子であれば何でも構わない。このアンテナ素子７の一部は、基板６の上面に露出し、アンテナ素子７の他の一部は、基板６の下面に配置されたパターン８により形成されている。また、基板６の上面に露出したアンテナ素子７の一部は、アンテナ素子７を覆う樹脂１８によって支持されている。尚、アンテナ素子７の中心軸９は、基板６の上面に対し略平行である。   In FIG. 1, the antenna module 5 is disposed, for example, inside a capsule in a capsule endoscope system, and includes a substrate 6 and a coiled antenna element 7 disposed on the substrate 6. The antenna element is not limited to a coiled antenna element, and any antenna element may be used as long as it is a magnetic current type antenna element that is hardly affected by a living body. A part of the antenna element 7 is exposed on the upper surface of the substrate 6, and the other part of the antenna element 7 is formed by a pattern 8 disposed on the lower surface of the substrate 6. A part of the antenna element 7 exposed on the upper surface of the substrate 6 is supported by a resin 18 that covers the antenna element 7. The central axis 9 of the antenna element 7 is substantially parallel to the upper surface of the substrate 6.

上記構成により、アンテナ素子７の一部が基板６の内部に埋設されているので、アンテナモジュール５を小型化することができる。   With the above configuration, part of the antenna element 7 is embedded in the substrate 6, so that the antenna module 5 can be downsized.

また、基板６の上面にはアンテナ素子７に接続されたコンデンサやコイル等の電子部品１０が実装されているが、基板６の下面には電子部品が実装されていない。これにより、基板６の下面を実装面として、アンテナモジュール５を他のマザー基板等にリフロー実装可能となる。又、アンテナモジュールの低背化も可能となる。   In addition, an electronic component 10 such as a capacitor or a coil connected to the antenna element 7 is mounted on the upper surface of the substrate 6, but no electronic component is mounted on the lower surface of the substrate 6. As a result, the antenna module 5 can be reflow mounted on another mother board or the like with the lower surface of the substrate 6 as the mounting surface. In addition, the height of the antenna module can be reduced.

さらに、基板６の下面に、アンテナモジュール５の品質を検査する為の検査用ランド１１が設けられていても良い。これにより、アンテナモジュール５のみで品質検査が可能となり、その結果、アンテナモジュール５の品質信頼性を高めることができる。また、基板６の下面に検査用ランド１１が配置されていることにより、アンテナモジュール５の品質を容易に検査することができる。具体的な検査方法としては、検査用ランド１１にコンタクトピンを押し当て、当該コンタクトピンを介して検査を行う方法が考えられる。   Furthermore, an inspection land 11 for inspecting the quality of the antenna module 5 may be provided on the lower surface of the substrate 6. Thereby, quality inspection becomes possible only with the antenna module 5, and as a result, the quality reliability of the antenna module 5 can be improved. Further, since the inspection land 11 is disposed on the lower surface of the substrate 6, the quality of the antenna module 5 can be easily inspected. As a specific inspection method, a method in which a contact pin is pressed against the inspection land 11 and the inspection is performed through the contact pin can be considered.

さらに、基板６の下面に検査用ランド１１が配置されることによって、検査用ランド１１を実装用ランドとして兼用することができる。これにより、基板６の下面に検査用ランド１１と実装用ランドが個々に存在する場合より、基板６の下面の面積を縮小することができる。その結果、アンテナモジュール５を小型化することができる。   Further, the inspection land 11 is disposed on the lower surface of the substrate 6 so that the inspection land 11 can be used as a mounting land. Thereby, the area of the lower surface of the substrate 6 can be reduced as compared with the case where the inspection land 11 and the mounting land are individually present on the lower surface of the substrate 6. As a result, the antenna module 5 can be reduced in size.

アンテナモジュール５が配置されたカプセルのブロック図を図２に示す。図２において、アンテナモジュール５、電池１３、及び内視鏡部品１４は、カプセル１２の内側空間に効率的に収納するために、カプセル１２の軸１５方向に積み重ねて配置されている。ここで、アンテナモジュール５を構成するコイル状のアンテナ素子７によって発生する磁界により電池１３に渦電流が発生しにくいように、コイル状のアンテナ素子７の中心軸は電池１３の表面と略平行にすることが望ましい。つまり、電池１３表面と略平行な基板６の上面に対し略平行にコイル状のアンテナ素子７の中心軸を配置することにより、電池１３表面に渦電流が発生しにくくなるため、コイル状のアンテナ素子７の放射効率を向上させることが出来る。   A block diagram of the capsule in which the antenna module 5 is arranged is shown in FIG. In FIG. 2, the antenna module 5, the battery 13, and the endoscope component 14 are arranged so as to be stacked in the direction of the axis 15 of the capsule 12 in order to be efficiently stored in the inner space of the capsule 12. Here, the central axis of the coiled antenna element 7 is substantially parallel to the surface of the battery 13 so that an eddy current is not easily generated in the battery 13 due to the magnetic field generated by the coiled antenna element 7 constituting the antenna module 5. It is desirable to do. That is, by arranging the central axis of the coiled antenna element 7 substantially parallel to the upper surface of the substrate 6 that is substantially parallel to the surface of the battery 13, eddy currents are less likely to be generated on the surface of the battery 13. The radiation efficiency of the element 7 can be improved.

次に、図３（ａ）（ｂ）から図４（ａ）（ｂ）を用いて、アンテナ素子７の製造工程の一例を説明する。図３（ａ）は、導体板１６を打ち抜き加工することで略平行な複数のスリット１７を形成するスリット形成工程を示している。このスリット形成工程の後に、図３（ｂ）に示すようにスリット１７に対し略垂直方向に導体板１６の一部を屈曲させる屈曲工程が行われる。この屈曲工程の後に、図４（ａ）に示すように、屈曲された導体板１６の位置が相互にばらつかないように、樹脂１８により導体板１６の一部が固定される樹脂固定工程が行われる。この樹脂固定工程の後に、図４（ｂ）に示すように、導体板１６の一部が切削され、この切削された導体板１６と基板６の下面又は内部に配置されたパターン８とを連結させることによりアンテナ素子７を形成する連結工程が行われる。このような工程を通じてアンテナ素子７を製造する事で、アンテナ素子７の寸法バラツキを低く抑える事が出来、アンテナモジュール５の特性バラツキを低減する事が可能となる。   Next, an example of the manufacturing process of the antenna element 7 will be described with reference to FIGS. 3 (a) and 3 (b) to FIGS. 4 (a) and 4 (b). FIG. 3A shows a slit forming step of forming a plurality of substantially parallel slits 17 by punching the conductor plate 16. After this slit forming step, a bending step of bending a part of the conductor plate 16 in a direction substantially perpendicular to the slit 17 as shown in FIG. After this bending step, as shown in FIG. 4A, there is a resin fixing step in which a part of the conductor plate 16 is fixed by the resin 18 so that the positions of the bent conductor plates 16 do not vary from each other. Done. After this resin fixing step, as shown in FIG. 4B, a part of the conductor plate 16 is cut, and the cut conductor plate 16 and the pattern 8 disposed on the lower surface or inside of the substrate 6 are connected. As a result, a connecting step for forming the antenna element 7 is performed. By manufacturing the antenna element 7 through such a process, the dimensional variation of the antenna element 7 can be suppressed, and the characteristic variation of the antenna module 5 can be reduced.

本発明のアンテナモジュールは小型化されているので、カプセル内視鏡システムのカプセルに有用である。   Since the antenna module of the present invention is miniaturized, it is useful as a capsule for a capsule endoscope system.

（ａ）は、本発明の実施の形態１におけるアンテナモジュールの上面斜視図、（ｂ）は、同アンテナモジュールの下面斜視図(A) is a top perspective view of the antenna module according to Embodiment 1 of the present invention, and (b) is a bottom perspective view of the antenna module. 同アンテナモジュールをカプセル内に配置した場合のブロック図Block diagram when the antenna module is placed in a capsule （ａ）（ｂ）は、同アンテナモジュールの製造方法を示す図(A) (b) is a figure which shows the manufacturing method of the antenna module （ａ）（ｂ）は、同アンテナモジュールの製造方法を示す図(A) (b) is a figure which shows the manufacturing method of the antenna module 従来のアンテナモジュールとこれを用いたカプセルのブロック図Block diagram of a conventional antenna module and a capsule using the same

符号の説明Explanation of symbols

５ アンテナモジュール
６ 基板
７ アンテナ素子
８ パターン
９ 中心軸
１０ 電子部品
１１ 検査用ランド
１２ カプセル
１３ 電池
１４ 内視鏡部品
１５ 軸
１６ 導体板
１７ スリット
１８ 樹脂 DESCRIPTION OF SYMBOLS 5 Antenna module 6 Board | substrate 7 Antenna element 8 Pattern 9 Central axis 10 Electronic component 11 Inspection land 12 Capsule 13 Battery 14 Endoscopic component 15 Axis 16 Conductor plate 17 Slit 18 Resin

Claims (8)

基板と、
この基板に配置されたアンテナ素子とを備え、
このアンテナ素子の一部は、前記基板の上面に露出し、
前記アンテナ素子の他の一部は、前記基板の下面又は内部に配置されたアンテナモジュール。 A substrate,
An antenna element disposed on the substrate,
A part of this antenna element is exposed on the upper surface of the substrate,
Another part of the antenna element is an antenna module disposed on the lower surface or inside of the substrate. 前記アンテナ素子はコイル状であり、前記アンテナ素子の中心軸は、前記基板の上面に対し略平行である請求項１に記載のアンテナモジュール。 The antenna module according to claim 1, wherein the antenna element has a coil shape, and a central axis of the antenna element is substantially parallel to an upper surface of the substrate. 前記基板の上面には電子部品が実装された請求項１に記載のアンテナモジュール。 The antenna module according to claim 1, wherein an electronic component is mounted on the upper surface of the substrate. 前記基板の下面には電子部品が実装されていない請求項１に記載のアンテナモジュール。 The antenna module according to claim 1, wherein no electronic component is mounted on the lower surface of the substrate. 前記基板の下面に検査用ランドが設けられた請求項１に記載のアンテナモジュール。 The antenna module according to claim 1, wherein an inspection land is provided on a lower surface of the substrate. 前記検査用ランドを実装用ランドとして兼用した請求項１に記載のアンテナモジュール。 The antenna module according to claim 1, wherein the inspection land is also used as a mounting land. 基板と、
この基板に配置されたアンテナ素子とを備え、
このアンテナ素子の一部は、前記基板の上面に露出し、
前記アンテナ素子の他の一部は、前記基板の下面又は内部に配置されたアンテナモジュールを用いたカプセル内視鏡システム。 A substrate,
An antenna element disposed on the substrate,
A part of this antenna element is exposed on the upper surface of the substrate,
Another part of the antenna element is a capsule endoscope system using an antenna module arranged on the lower surface or inside of the substrate. 基板と、
この基板に配置されたコイル状のアンテナ素子とを備え、
このアンテナ素子の一部は、前記基板の上面に露出し、
前記アンテナ素子の他の一部は、前記基板の下面又は内部に配置されたアンテナモジュールの製造方法であって、
導体板に略平行な複数のスリットを形成するスリット形成工程と、
このスリット形成工程の後に、前記スリットに対し略垂直方向に前記導体板を屈曲させる屈曲工程と、
この屈曲工程の後に、前記屈曲された導体板と前記基板の下面又は内部に配置されたパターンとを連結させることにより前記アンテナ素子を形成する連結工程とを有するアンテナモジュールの製造方法。 A substrate,
A coiled antenna element disposed on the substrate,
A part of this antenna element is exposed on the upper surface of the substrate,
The other part of the antenna element is a method of manufacturing an antenna module disposed on the lower surface or inside of the substrate,
A slit forming step of forming a plurality of slits substantially parallel to the conductor plate;
After this slit forming step, a bending step of bending the conductor plate in a direction substantially perpendicular to the slit,
A method for manufacturing an antenna module, comprising: a connecting step of forming the antenna element by connecting the bent conductor plate and a pattern disposed on a lower surface or inside of the substrate after the bending step.
JP2006243699A 2006-09-08 2006-09-08 Antenna module, capsule endoscope system using the same, and method for manufacturing antenna module Expired - Fee Related JP4819626B2 (en)

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