JP2538241Y2 - Loop antenna - Google Patents
Loop antennaInfo
- Publication number
- JP2538241Y2 JP2538241Y2 JP1992034569U JP3456992U JP2538241Y2 JP 2538241 Y2 JP2538241 Y2 JP 2538241Y2 JP 1992034569 U JP1992034569 U JP 1992034569U JP 3456992 U JP3456992 U JP 3456992U JP 2538241 Y2 JP2538241 Y2 JP 2538241Y2
- Authority
- JP
- Japan
- Prior art keywords
- frame
- loop
- loop antenna
- conductor
- container
- 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.)
- Expired - Lifetime
Links
Landscapes
- Details Of Aerials (AREA)
- Support Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Description
【考案の詳細な説明】[Detailed description of the invention]
【０００１】[0001]
【産業上の利用分野】本考案は、受信感度を向上させる
ことのできるループアンテナに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loop antenna capable of improving reception sensitivity.
【０００２】[0002]
【従来の技術】導体をループ状に巻いて形成されたルー
プアンテナは、指向性のあるアンテナとして受信専用に
多用される。ループアンテナは受信周波数の帯域を広く
できる利点があるが、導体は単に枠体に巻いただけなの
で、受信感度の向上については自ずから限界がある。2. Description of the Related Art A loop antenna formed by winding a conductor in a loop shape is often used exclusively for reception as a directional antenna. The loop antenna has an advantage that the band of the reception frequency can be widened, but since the conductor is simply wound around the frame, there is a natural limit in improving the reception sensitivity.
【０００３】[0003]
【考案が解決しようとする課題】本考案の課題は、受信
感度を向上させることのできるループアンテナを提供す
ることにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a loop antenna capable of improving reception sensitivity.
【０００４】[0004]
【課題を解決するための手段】本考案は、導体をループ
状に形成したループアンテナにおいて、導体に囲まれた
面に磁性体を配置したことを特徴とする。The present invention is characterized in that a magnetic material is arranged on a surface surrounded by a conductor in a loop antenna having a conductor formed in a loop shape.
【０００５】[0005]
【実施例】以下、本考案のループアンテナの第１の実施
例を示す図１と図２を参照しながら説明する。図１は正
面図、図２は図１のＡ−Ａ断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the loop antenna according to the present invention will be described with reference to FIGS. FIG. 1 is a front view, and FIG. 2 is a sectional view taken along line AA of FIG.
【０００６】図１と図２において、１は合成樹脂からな
るループ状の枠体、２は表面を絶縁した線材等の導体、
３は合成樹脂を混入したフェライトからなる磁性体であ
る。枠体１は外周部に溝４を形成してあり、導体２はこ
の溝４内に巻かれている。そして、枠体１の内側、つま
り導体２に囲まれた面にはその面を塞ぐように磁性体３
を配置してある。磁性体３の周囲は、枠体１の内面５に
固着されている。1 and 2, 1 is a loop-shaped frame made of synthetic resin, 2 is a conductor such as a wire having an insulated surface,
Reference numeral 3 denotes a magnetic body made of ferrite mixed with a synthetic resin. The frame 1 has a groove 4 formed in the outer peripheral portion, and the conductor 2 is wound in the groove 4. The magnetic material 3 is placed inside the frame 1, that is, on the surface surrounded by the conductor 2 so as to cover the surface.
Is arranged. The periphery of the magnetic body 3 is fixed to the inner surface 5 of the frame 1.
【０００７】このように構成したループアンテナは、電
波の磁束が導体２に囲まれた面の磁性体３に集中するの
で従来のループアンテナに比較して感度が向上する。な
お、受信周波数によっては、導体２から離れた磁性体３
の中心部分に集まる磁束が感度の向上に寄与しない場合
もある。その場合、ループアンテナの第２の実施例を示
す図３の正面図のように、磁性体３の中心部分６を除い
て貫通させてもよい。In the loop antenna configured as described above, the magnetic flux of the radio wave is concentrated on the magnetic body 3 on the surface surrounded by the conductor 2, so that the sensitivity is improved as compared with the conventional loop antenna. Note that, depending on the reception frequency, the magnetic material 3 separated from the conductor 2
In some cases, the magnetic flux gathered at the central portion of the first layer does not contribute to the improvement of the sensitivity. In this case, as shown in the front view of FIG. 3 showing the second embodiment of the loop antenna, the magnetic body 3 may be penetrated except for the central portion 6.
【０００８】図４と図５は本考案のループアンテナの第
３の実施例を示す図であり、図４は正面図、図５は図４
のＢ−Ｂ断面図である。平坦な四角形の枠体１０は、導
体１１を巻く外周部の溝１２と導体１１を巻いた溝１２
に囲まれた容器部１３からなり、容器部１３は図４では
点線で囲って示してある。FIGS. 4 and 5 are views showing a third embodiment of the loop antenna according to the present invention. FIG. 4 is a front view, and FIG.
FIG. The flat rectangular frame 10 has an outer peripheral groove 12 around which the conductor 11 is wound and a groove 12 around which the conductor 11 is wound.
The container 13 is surrounded by a dotted line in FIG.
【０００９】容器部１３には磁性体１４を封入してある
が、この磁性体１４はあらかじめ設けた孔から磁性体粉
を容器部１３に入れ、さらに合成樹脂を混入して固化さ
せたものである。磁性体１４を入れた後で、容器部１３
の孔が塞がれることは言うまでもない。A magnetic material 14 is sealed in the container portion 13. The magnetic material 14 is obtained by putting a magnetic powder into the container portion 13 through a hole provided in advance, and further mixing and solidifying a synthetic resin. is there. After the magnetic material 14 is put in, the container 13
It goes without saying that the hole is closed.
【００１０】図６は第４の実施例を示す断面図である
が、容器部１３の中心部分１５を貫通させてあり、この
中心部分１５に磁性体１４は存在しない。従って、図３
に示す第２の実施例と同じように磁性体の中心部分を除
いて貫通させたループアンテナが得られる。なお、実施
例における枠体の外周部には導体を巻く溝を設けてある
が、導体を巻けるようにしてあればよく、溝がなくても
よい。FIG. 6 is a sectional view showing a fourth embodiment, in which the center portion 15 of the container portion 13 is penetrated, and the magnetic body 14 does not exist in the center portion 15. Therefore, FIG.
As in the second embodiment, a loop antenna penetrating except for the central portion of the magnetic body is obtained. Although a groove for winding a conductor is provided on the outer peripheral portion of the frame in the embodiment, it is sufficient that the conductor can be wound, and the groove may not be provided.
【００１１】[0011]
【考案の効果】以上述べたように本考案のループアンテ
ナは、導体で囲まれた面に磁性体を配置し、電波の磁束
をその磁性体に集中させることにより受信感度を向上で
きる。磁性体は、合成樹脂を混入することにより弾性を
持たせたり、強度を上げることができるので、特に第１
と第２の実施例のように直接枠体に磁性体を固着する場
合には都合がよい。As described above, in the loop antenna of the present invention, the magnetic body is arranged on the surface surrounded by the conductor, and the reception sensitivity can be improved by concentrating the magnetic flux of the radio wave on the magnetic body. The magnetic material can be made elastic or have increased strength by mixing a synthetic resin.
It is convenient when the magnetic body is directly fixed to the frame body as in the second embodiment.
【００１２】枠体に磁性体を入れる容器部を設けた場合
は、容器部に磁性体を入れればよいから、磁性体を導体
で囲まれた面に配置することが容易になる。また、磁性
体が外部に露呈しないからその破損も生じないのでアン
テナの物理的な強度も向上する。When the container is provided with a magnetic material in the frame, the magnetic material may be provided in the container, so that the magnetic material can be easily arranged on the surface surrounded by the conductor. In addition, since the magnetic body is not exposed to the outside and is not damaged, the physical strength of the antenna is also improved.
【図１】本考案のループアンテナの実施例を示す正面図
である。FIG. 1 is a front view showing an embodiment of a loop antenna of the present invention.
【図２】図１のＡ−Ａ断面図である。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】本考案のループアンテナの第２の実施例を示す
断面図である。FIG. 3 is a sectional view showing a second embodiment of the loop antenna of the present invention.
【図４】本考案のループアンテナの第３の実施例を示す
正面図である。FIG. 4 is a front view showing a third embodiment of the loop antenna of the present invention.
【図５】図４のＢ−Ｂ断面図である。FIG. 5 is a sectional view taken along line BB of FIG. 4;
【図６】本考案のループアンテナの第４の実施例を示す
断面図である。FIG. 6 is a sectional view showing a fourth embodiment of the loop antenna of the present invention.
１ 枠体 ２ 導体 ３ 磁性体 DESCRIPTION OF SYMBOLS 1 Frame 2 Conductor 3 Magnetic body
Claims (5)
体、該枠体に巻回された導体、該枠体に囲まれた平面と
ほぼ同じ大きさに形成された板状の磁性体を備え、 該板状の磁性体は、該導体と平行に位置し、かつ該枠体
に囲まれた平面を塞ぐ様に該枠体に支持された ことを特
徴とするループアンテナ。1. A synthetic resin frame formed in a loop shape, a conductor wound around the frame, and a plane surrounded by the frame.
A plate-like magnetic body formed in substantially the same size, wherein the plate-like magnetic body is positioned parallel to the conductor, and
A loop antenna supported by the frame so as to cover a plane surrounded by the loop antenna.
体、該枠体に巻回された導体、該枠体に囲まれた平面と
ほぼ同じ大きさで、中心部分に貫通孔が形成された板状
の磁性体を備え、 該板状の磁性体は、該導体と平行に位置し、かつ該貫通
孔が該枠体に囲まれた平面の中心に位置する様に該枠体
に支持された ことを特徴とするループアンテナ。2. A frame made of synthetic resin formed in a loop shape, a conductor wound around the frame, and a plane surrounded by the frame.
A plate with almost the same size and a through hole formed in the center
Comprising a magnetic body, the plate-like magnetic bodies are positioned parallel to the conductor, and said through
The frame so that the hole is located at the center of the plane surrounded by the frame.
A loop antenna characterized in that it is supported by a loop antenna.
器部の外周部に沿って一本の溝が形成されてなる合成樹
脂製の枠体、及び該枠体の溝に巻回されてループ状に形
成された導体を備え、 該枠体の容器部内に磁性体を充満させた ことを特徴とす
るループアンテナ。3. A container having a hollow interior,
Synthetic tree with one groove formed along the outer periphery of the container
A frame made of oil, and formed into a loop by being wound around a groove of the frame;
A loop antenna comprising a conductor formed and a magnetic body filled in a container of the frame .
部、該容器部の外周部に沿って形成された一本の溝を有
する合成樹脂製のループ状枠体、及び該枠体の溝に巻回
されてループ状に形成された導体を備え、 該ループ状の容器部内に磁性体を充満させた ことを特徴
とするループアンテナ。4. A loop-shaped container having a hollow inside.
Part, having one groove formed along the outer peripheral part of the container part.
And a loop-shaped frame made of synthetic resin, and wound around a groove of the frame.
A loop antenna, comprising: a conductor formed in a loop shape by being looped, wherein the loop-shaped container portion is filled with a magnetic material .
求項１、２、３、４のいずれかに記載のループアンテ
ナ。5. The loop antenna according to claim 1, wherein said magnetic material is mixed with a synthetic resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992034569U JP2538241Y2 (en) | 1992-04-24 | 1992-04-24 | Loop antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992034569U JP2538241Y2 (en) | 1992-04-24 | 1992-04-24 | Loop antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0588011U JPH0588011U (en) | 1993-11-26 |
| JP2538241Y2 true JP2538241Y2 (en) | 1997-06-11 |
Family
ID=12417962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992034569U Expired - Lifetime JP2538241Y2 (en) | 1992-04-24 | 1992-04-24 | Loop antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2538241Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2723838B2 (en) * | 1995-06-20 | 1998-03-09 | 静岡日本電気株式会社 | Radio selective call receiver |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56111740A (en) * | 1980-02-07 | 1981-09-03 | Takenaka Komuten Co | Slab for bridging truss steel of half pca plate to steel frame or reinforced concrete |
| JPS597796A (en) * | 1982-07-07 | 1984-01-14 | Hitachi Ltd | Rotary type compressor |
| JPS5915257A (en) * | 1982-07-17 | 1984-01-26 | Canon Inc | Magnetic toner |
| JPS5917705A (en) * | 1982-07-22 | 1984-01-30 | Tdk Corp | Layer-built plate antenna coil |
| JPS60201702A (en) * | 1984-03-27 | 1985-10-12 | Matsushita Electric Ind Co Ltd | Ferrite antenna coil |
-
1992
- 1992-04-24 JP JP1992034569U patent/JP2538241Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0588011U (en) | 1993-11-26 |
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