JP2006140589A - Antenna structure - Google Patents

Antenna structure Download PDF

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Publication number
JP2006140589A
JP2006140589A JP2004326372A JP2004326372A JP2006140589A JP 2006140589 A JP2006140589 A JP 2006140589A JP 2004326372 A JP2004326372 A JP 2004326372A JP 2004326372 A JP2004326372 A JP 2004326372A JP 2006140589 A JP2006140589 A JP 2006140589A
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Prior art keywords
antenna
circuit board
metal member
wiring patterns
wiring pattern
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JP2004326372A
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Japanese (ja)
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Ryoichi Enoshima
了一 榎嶋
Kazunori Hoshino
和則 星野
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Casio Hitachi Mobile Communications Co Ltd
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Casio Hitachi Mobile Communications Co Ltd
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Priority to JP2004326372A priority Critical patent/JP2006140589A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide technology of greatly improving antenna characteristics such as a gain and a bandwidth by configuring a microwave circuit while effectively utilizing the space so as to increase the effective length of the antenna. <P>SOLUTION: A loop circuit is formed of: a circuit board 61 including wiring patterns; an antenna element 81 installed on the wiring patterns on the circuit board 61; and a metallic member 86 whose both ends are connected to the wiring patterns. The metallic member 86 is provided to a case 12 for housing the circuit board 61. Specifically, the antenna structure is provided with a first metallic member 86 provided to the inner side face of the case 12 and a second metallic member 84 which is provided to the wiring patterns, has elasticity, and is brought into contact with the first metallic member 86. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、携帯無線機に用いられるアンテナ構造に関する。   The present invention relates to an antenna structure used for a portable wireless device.

携帯電話機に代表される携帯無線機の小型・軽量化のために、アンテナ部の小型化も要求される。しかし、アンテナを小型化すると、帯域幅や利得などのアンテナ性能に大きく影響し、十分な性能を得ることは非常に難しい。
従来、小型アンテナとして金属板を単体で用いることが多く、例えば誘電体に電極パターンを形成したアンテナ素子に、導電性の板状補助エレメントを取り付けたものがある（特許文献１参照）。
特開２００１−３３９２２６号公報 In order to reduce the size and weight of portable radio devices typified by mobile phones, it is also required to reduce the size of the antenna portion. However, if the antenna is downsized, it greatly affects antenna performance such as bandwidth and gain, and it is very difficult to obtain sufficient performance.
Conventionally, a metal plate is often used alone as a small antenna. For example, there is an antenna element in which an electrode pattern is formed on a dielectric, and a conductive plate-like auxiliary element is attached (see Patent Document 1).
JP 2001-339226 A

しかし、従来のように金属板を単体で用いた小型アンテナの場合、アンテナ実効長が小さく、ループアンテナに比べてアンテナ利得・帯域幅などに制約が出てしまう。   However, in the case of a small antenna using a single metal plate as in the prior art, the effective antenna length is small, and the antenna gain, bandwidth, and the like are limited compared to the loop antenna.

本発明の課題は、スペースを有効に利用しつつ立体回路を構成することによりアンテナ実効長を大きくして、利得・帯域幅などアンテナ特性を大きく向上することである。   An object of the present invention is to increase the effective antenna length by constructing a three-dimensional circuit while effectively using space, and to greatly improve antenna characteristics such as gain and bandwidth.

以上の課題を解決するため、請求項１に記載の発明は、例えば図３から図６に示すように、配線パターン８２・８３を有する回路基板６１と、この回路基板６１上で配線パターン８２・８３上に設置されたアンテナ素子８１と、前記配線パターン８２・８３に両端部が接続される金属部材８６とでループ回路を形成してなるアンテナ構造を特徴とする。   In order to solve the above-described problems, the invention described in claim 1 includes a circuit board 61 having wiring patterns 82 and 83, and wiring patterns 82 and 83 on the circuit board 61 as shown in FIGS. The antenna structure is characterized in that a loop circuit is formed by an antenna element 81 installed on 83 and a metal member 86 having both ends connected to the wiring patterns 82 and 83.

請求項１に記載の発明によれば、回路基板上の配線パターン及びアンテナ素子と、その配線パターンに両端部が接続される金属部材とによる立体ループアンテナなので、スペースを有効に利用しながら立体ループ回路によりアンテナ実効長を大きくできる。
従って、アンテナ単体に比べて利得・帯域幅などアンテナ特性を大きく向上できる。 According to the first aspect of the present invention, the three-dimensional loop antenna includes the wiring pattern and the antenna element on the circuit board and the metal member connected to both ends of the wiring pattern. The effective antenna length can be increased by the circuit.
Therefore, antenna characteristics such as gain and bandwidth can be greatly improved as compared with the antenna alone.

請求項２に記載の発明は、請求項１に記載のアンテナ構造であって、例えば図３及び図６に示すように、前記金属部材８６は、前記回路基板６１を収納する筐体１２に備えられていることを特徴とする。   A second aspect of the present invention is the antenna structure according to the first aspect, wherein, for example, as shown in FIGS. 3 and 6, the metal member 86 is provided in a housing 12 that houses the circuit board 61. It is characterized by being.

請求項２に記載の発明によれば、回路基板上のアンテナ素子を含む配線パターンに対し、筐体に備えた金属部材の両端部が接続されて、立体ループアンテナが構成される。   According to the second aspect of the present invention, both ends of the metal member provided in the housing are connected to the wiring pattern including the antenna element on the circuit board to constitute a three-dimensional loop antenna.

請求項３に記載の発明は、請求項２に記載のアンテナ構造であって、例えば図３、図４及び図６に示すように、前記筐体１２の内側面に設けられた第１金属部材８６と、前記配線パターン８２に設けられ、弾性を具備して前記第１金属部材８６に接触する第２金属部材８４とを備えることを特徴とする。   A third aspect of the present invention is the antenna structure according to the second aspect, wherein the first metal member is provided on the inner surface of the housing 12 as shown in FIGS. 86 and a second metal member 84 provided on the wiring pattern 82 and having elasticity and contacting the first metal member 86.

請求項３に記載の発明によれば、筐体の内側面に設けた第１金属部材に対し、回路基板の配線パターンに設けた第２金属部材が弾性接触する。   According to the third aspect of the present invention, the second metal member provided on the wiring pattern of the circuit board is in elastic contact with the first metal member provided on the inner side surface of the housing.

請求項４に記載の発明は、請求項１に記載のアンテナ構造であって、例えば図７に示すように、前記金属部材９６は、前記回路基板６１上に設置されていることを特徴とする。   A fourth aspect of the present invention is the antenna structure according to the first aspect, wherein the metal member 96 is installed on the circuit board 61 as shown in FIG. 7, for example. .

請求項４に記載の発明によれば、回路基板上において、アンテナ素子と配線パターン及び金属部材により立体ループアンテナが構成される。   According to the invention described in claim 4, the three-dimensional loop antenna is constituted by the antenna element, the wiring pattern, and the metal member on the circuit board.

本発明によれば、回路基板上の配線パターン及びアンテナ素子と、その配線パターンに両端部が接続される金属部材とによる立体ループアンテナであり、スペースを有効に利用しながら立体ループ回路によりアンテナ実効長を大きくできるため、アンテナ単体に比べて利得・帯域幅などアンテナ特性を大きく向上できるものとなる。   According to the present invention, there is a three-dimensional loop antenna including a wiring pattern and an antenna element on a circuit board, and a metal member connected to both ends of the wiring pattern. Since the length can be increased, antenna characteristics such as gain and bandwidth can be greatly improved as compared with the antenna alone.

以下、図を参照して本発明を実施するための最良の形態を詳細に説明する。
本発明を適用する携帯電話機は、図１に示すように、本体部１と蓋部２をヒンジ部３により結合した折り畳み式のもので、本体部１に操作部４が備えられ、蓋部２に表示部５が備えられている。 Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the cellular phone to which the present invention is applied is a foldable type in which a main body 1 and a lid 2 are coupled by a hinge 3, and the main body 1 is provided with an operation unit 4. The display unit 5 is provided.

本体部１は、図２に示すように、組み合わされて筐体をなす下ケース１１及び上ケース１２内に、回路部であるユニットアッシー６の他、キーボタン部４１、マイク７１、バイブレータ７２、マクロノブ７３、マクロノブホルダ７４、ライトレンズホルダ７５等の各種部品を組み込んだものである。下ケース１１には、バッテリーカバー１３、インターフェイスキャップ１４、イヤホンキャップ１５、ＳＤカードスロットキャップ１６が取り付けられる。   As shown in FIG. 2, the main body unit 1 includes a unit assembly 6 that is a circuit unit, a key button unit 41, a microphone 71, a vibrator 72, Various parts such as a macro knob 73, a macro knob holder 74, and a light lens holder 75 are incorporated. A battery cover 13, an interface cap 14, an earphone cap 15, and an SD card slot cap 16 are attached to the lower case 11.

ユニットアッシー６は、回路基板６１にキー基板６２等の各種電子部品を組み付けたもので、回路基板６１の長手方向の一端部にアンテナ素子として誘電体アンテナであるチップアンテナ８１が搭載されている。
すなわち、チップアンテナ８１は、図３に拡大して示すように、回路基板６１の一端部のほぼ中央に設置されている。このチップアンテナ８１は、図４に示すように、回路基板６１の表裏面に露出することなく内部に設置、つまり、内層に形成した両側の配線パターン８２・８３にそれぞれ接続されている。この回路基板６１内部に設置した配線パターン８２・８３は回路基板６１の端部に沿って両側方にそれぞれ延びている。 The unit assembly 6 is a circuit board 61 assembled with various electronic components such as a key board 62. A chip antenna 81, which is a dielectric antenna, is mounted as an antenna element on one end of the circuit board 61 in the longitudinal direction.
That is, the chip antenna 81 is installed in the approximate center of the one end part of the circuit board 61, as expanded and shown in FIG. As shown in FIG. 4, the chip antenna 81 is installed inside without being exposed on the front and back surfaces of the circuit board 61, that is, connected to the wiring patterns 82 and 83 on both sides formed in the inner layer. The wiring patterns 82 and 83 installed inside the circuit board 61 extend to both sides along the end of the circuit board 61.

図示例において、一方の配線パターン８２はほぼＵ字形をなす形状でその先端に、回路基板６１に設置した金属部材としての金属バネ８４（図６参照）が接続されており、他方の配線パターン８３は湾曲した形状でその先端に、回路基板６１に設置した金属箔による接続端子８５が接続されている。   In the illustrated example, one wiring pattern 82 has a substantially U shape, and a metal spring 84 (see FIG. 6) as a metal member installed on the circuit board 61 is connected to the tip of the wiring pattern 82, and the other wiring pattern 83. Has a curved shape, and a connection terminal 85 made of a metal foil installed on the circuit board 61 is connected to the tip thereof.

また、図５に示すように、上ケース１２の長手方向の一端部に金属部材としての金属板８６が設けられている。
すなわち、金属板８６は上ケース１２の内側面に一端部に沿って接着等により取り付けられており、図示では湾曲形状をなす金属板６８の両端部にほぼＬ字形の折り曲げ部８７・８８がそれぞれ形成されている。ここで、図６に示すように、一方の折り曲げ部８７は回路基板６１の接続端子８５に対応し、他方の折り曲げ部８８は回路基板６１の金属バネ８４に対応するものである。 Further, as shown in FIG. 5, a metal plate 86 as a metal member is provided at one end of the upper case 12 in the longitudinal direction.
That is, the metal plate 86 is attached to the inner side surface of the upper case 12 by bonding or the like along one end portion. In the drawing, substantially L-shaped bent portions 87 and 88 are respectively provided at both end portions of the curved metal plate 68. Is formed. Here, as shown in FIG. 6, one bent portion 87 corresponds to the connection terminal 85 of the circuit board 61, and the other bent portion 88 corresponds to the metal spring 84 of the circuit board 61.

そして、ユニットアッシー６を内蔵して下ケース１１及び上ケース１２を組み合わされてなる本体部１の組立状態において、図６に示したように、上ケース１２に設けた金属板８６の一方の折り曲げ部８７が回路基板６１の接続端子８５に接続状態となって、他方の折り曲げ部８８が回路基板６１の金属バネ８４に接続状態となっている。
従って、回路基板６１側のチップアンテナ８１、配線パターン８２・８３、金属バネ８４及び接続端子８５と、上ケース１２側の金属板８６とによるアンテナのループ回路が構成され、つまり、立体ループアンテナ８が構成されている。 Then, in the assembled state of the main body portion 1 in which the unit assembly 6 is incorporated and the lower case 11 and the upper case 12 are combined, as shown in FIG. 6, one of the metal plates 86 provided on the upper case 12 is bent. The part 87 is connected to the connection terminal 85 of the circuit board 61, and the other bent part 88 is connected to the metal spring 84 of the circuit board 61.
Therefore, an antenna loop circuit is configured by the chip antenna 81 on the circuit board 61 side, the wiring patterns 82 and 83, the metal springs 84 and the connection terminals 85, and the metal plate 86 on the upper case 12 side, that is, the three-dimensional loop antenna 8. Is configured.

このように、携帯電話機において、本体部１の一端部内に立体ループアンテナ８を備えたため、誘電体アンテナ（チップアンテナ８１）による波長短縮効果とともに、配線パターン８２・８３、金属バネ８４及び金属板８６によるアンテナ実効長の拡大効果が得られる。
しかも、実施形態では、回路基板６１の一端部で他の電子部品を搭載しない部分に配線パターン８２・８３、金属バネ８４を設けて、上ケース１２の対応部分に金属板８６を設けることで、小型・軽量化を図りながら、空いているデッドスペースを有効活用しつつ、アンテナ実効長を拡大できることにより、アンテナ単体に比べて利得・帯域幅などアンテナ特性を大きく向上させることが可能である。 As described above, since the three-dimensional loop antenna 8 is provided in one end portion of the main body 1 in the cellular phone, the wiring patterns 82 and 83, the metal spring 84, and the metal plate 86 can be obtained together with the wavelength shortening effect by the dielectric antenna (chip antenna 81). The effective antenna length can be increased by
In addition, in the embodiment, by providing the wiring patterns 82 and 83 and the metal springs 84 in the portion where the other electronic components are not mounted at one end of the circuit board 61, and by providing the metal plate 86 in the corresponding portion of the upper case 12, The antenna effective length can be increased while effectively utilizing the vacant dead space while reducing the size and weight, and thus the antenna characteristics such as gain and bandwidth can be greatly improved as compared with the antenna alone.

図７は実施形態２を示すもので、回路基板６１の一端部に、一側方のチップアンテナ９１を設置して、他側方の金属板９６を設置するとともに、これらチップアンテナ９１及び金属板９６に接続される配線パターン９２・９３を形成している。
すなわち、金属板９６は両端部にほぼＬ字形の折り曲げ部９７を有するもので、その折り曲げ部９７で回路基板６１上に搭載されており、その両端部の折り曲げ部９７とチップアンテナ９１の両端部が回路基板６１の反対側面に形成した配線パターン９２・９３によりそれぞれ接続されている。 FIG. 7 shows the second embodiment. One end of a circuit board 61 is provided with a chip antenna 91 on one side, and a metal plate 96 on the other side is installed. Wiring patterns 92 and 93 connected to 96 are formed.
That is, the metal plate 96 has substantially L-shaped bent portions 97 at both ends, and is mounted on the circuit board 61 by the bent portions 97. The bent portions 97 at both ends and both ends of the chip antenna 91 are mounted. Are connected by wiring patterns 92 and 93 formed on opposite sides of the circuit board 61, respectively.

こうして、回路基板６１において、チップアンテナ９１、配線パターン９２・９４及び金属板９６による立体ループアンテナ９が構成されている。
この立体ループアンテナ９によっても、前述した立体ループアンテナ８によると同様の作用効果が得られる。 Thus, on the circuit board 61, the three-dimensional loop antenna 9 including the chip antenna 91, the wiring patterns 92 and 94, and the metal plate 96 is configured.
This three-dimensional loop antenna 9 can also provide the same effects as the three-dimensional loop antenna 8 described above.

なお、以上の実施形態においては、携帯電話機のアンテナ構造としたが、本発明はこれに限定されるものではなく、ＰＤＡなど他の携帯無線機に適用しても良い。
また、配線パターンや金属部材の形状等も任意であり、その他、具体的な細部構造等についても適宜に変更可能であることは勿論である。 In the above embodiment, the antenna structure of the cellular phone is used. However, the present invention is not limited to this, and may be applied to other portable radio devices such as a PDA.
Also, the wiring pattern, the shape of the metal member, and the like are arbitrary, and it is needless to say that other specific detailed structures can be appropriately changed.

本発明を適用した一実施形態の構成を示すもので、携帯無線機の一例を示した正面図（ａ）、側面図（ｂ）及び背面図（ｃ）である。BRIEF DESCRIPTION OF THE DRAWINGS The structure of one Embodiment to which this invention is applied is shown, and it is the front view (a), side view (b), and back view (c) which showed an example of the portable radio | wireless machine. 携帯無線機の部品構成を示した分解斜視図である。It is the disassembled perspective view which showed the components structure of the portable radio | wireless machine. 回路基板に設けたアンテナ素子及び配線パターン部分を示した拡大平面図である。It is the enlarged plan view which showed the antenna element and wiring pattern part which were provided in the circuit board. 図３の回路基板の配線パターン部分を示した図である。It is the figure which showed the wiring pattern part of the circuit board of FIG. 筐体に設けた金属部材部分を示した拡大平面図である。It is the enlarged plan view which showed the metal member part provided in the housing | casing. 立体ループアンテナ部分を示した拡大正面図である。It is the enlarged front view which showed the three-dimensional loop antenna part. 本発明を適用した実施形態２を示すもので、回路基板に設けたアンテナ素子、金属部材及び配線パターン部分を示した拡大斜視図である。FIG. 7 is an enlarged perspective view showing an antenna element, a metal member, and a wiring pattern portion provided on a circuit board according to a second embodiment to which the present invention is applied.

符号の説明Explanation of symbols

１１・１２ 筐体
６１ 回路基板
８ 立体ループアンテナ
８１ アンテナ素子
８２・８３ 配線パターン
８４ 金属部材（金属バネ）
８５ 接続端子
８６ 金属部材（金属板）
８７・８８ 折り曲げ部
９ 立体ループアンテナ
９１ アンテナ素子
９２・９３ 配線パターン
９６ 金属部材（金属板）
９７ 折り曲げ部 11.12 Case 61 Circuit board 8 Three-dimensional loop antenna 81 Antenna element 82/83 Wiring pattern 84 Metal member (metal spring)
85 Connection terminal 86 Metal member (metal plate)
87/88 bent portion 9 three-dimensional loop antenna 91 antenna element 92/93 wiring pattern 96 metal member (metal plate)
97 Bending part

Claims (4)

配線パターンを有する回路基板と、
この回路基板上で配線パターン上に設置されたアンテナ素子と、
前記配線パターンに両端部が接続される金属部材とでループ回路を形成してなることを特徴とするアンテナ構造。 A circuit board having a wiring pattern;
An antenna element installed on the wiring pattern on the circuit board;
An antenna structure, wherein a loop circuit is formed by a metal member having both ends connected to the wiring pattern. 前記金属部材は、前記回路基板を収納する筐体に備えられていることを特徴とする請求項１に記載のアンテナ構造。   The antenna structure according to claim 1, wherein the metal member is provided in a housing that houses the circuit board. 前記筐体の内側面に設けられた第１金属部材と、
前記配線パターンに設けられ、弾性を具備して前記第１金属部材に接触する第２金属部材とを備えることを特徴とする請求項２に記載のアンテナ構造。 A first metal member provided on an inner surface of the housing;
The antenna structure according to claim 2, further comprising: a second metal member provided on the wiring pattern and having elasticity and contacting the first metal member. 前記金属部材は、前記回路基板上に設置されていることを特徴とする請求項１に記載のアンテナ構造。   The antenna structure according to claim 1, wherein the metal member is installed on the circuit board.
JP2004326372A 2004-11-10 2004-11-10 Antenna structure Pending JP2006140589A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014112801A (en) * 2012-12-05 2014-06-19 Denso Wave Inc Antenna device
CN106953161A (en) * 2017-05-04 2017-07-14 成都优孚达信息技术有限公司 A kind of non-contact radio frequency cards payment mechanism applied on mobile terminal

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CN106953161A (en) * 2017-05-04 2017-07-14 成都优孚达信息技术有限公司 A kind of non-contact radio frequency cards payment mechanism applied on mobile terminal
CN106953161B (en) * 2017-05-04 2023-10-27 义乌中国小商品城大数据有限公司 Non-contact radio frequency card payment device applied to mobile terminal

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