JPH0666192B2 - Balun coil - Google Patents
Balun coilInfo
- Publication number
- JPH0666192B2 JPH0666192B2 JP5001285A JP5001285A JPH0666192B2 JP H0666192 B2 JPH0666192 B2 JP H0666192B2 JP 5001285 A JP5001285 A JP 5001285A JP 5001285 A JP5001285 A JP 5001285A JP H0666192 B2 JPH0666192 B2 JP H0666192B2
- Authority
- JP
- Japan
- Prior art keywords
- coil
- holes
- ferrite substrate
- coils
- balun
- 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 - Fee Related
Links
Landscapes
- Coils Or Transformers For Communication (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明はアンテナ等に用いられるバランコイルに関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balun coil used for an antenna or the like.
従来の技術 従来のバランコイルは、例えば実開昭５８−１７２６０
号に示されているように、第３図のような構造になって
いた。2. Description of the Related Art A conventional balun coil is disclosed in, for example, Japanese Utility Model Laid-Open No. 58-17260.
As shown in the issue, the structure was as shown in FIG.
すなわち従来のバランコイルは、４つの巻線Ｎ11，
Ｎ12，Ｎ21，Ｎ22をリングコア１１に巻回した構造にな
っている。That is, the conventional balun coil has four windings N 11 ,
It has a structure in which N 12 , N 21 , and N 22 are wound around the ring core 11.
発明が解決しようとする問題点 しかしこのような構造では、リングコア１１のように形
状が閉じているため、巻線を巻回する巻回作業が面倒で
あり、価格も高くなる。又バランコイルの構成がリング
コア１１と巻線だけであり、巻線の端をそのまま他の回
路部分に接続するので空中配線に近くなり、特性がばら
つきやすく、接続、固定作業も面倒であり使いづらいも
のであった。Problems to be Solved by the Invention However, in such a structure, since the shape is closed like the ring core 11, the winding work for winding the winding is troublesome, and the cost becomes high. In addition, the balun coil is composed only of the ring core 11 and the winding, and since the end of the winding is directly connected to another circuit part, it is close to the aerial wiring, the characteristics are likely to vary, and the connection and fixing work is troublesome and difficult to use. It was a thing.
そこで、本発明は巻回作業なしで性能バラツキを防ぎ、
大量生産を可能とするバランコイルを提供することを目
的とするものである。Therefore, the present invention prevents performance variations without winding work,
The object is to provide a balun coil that enables mass production.
問題点を解決するための手段 そして上記問題点を解決する本発明の技術的な手段は、
スルーホールメッキを施した４列の貫通穴を設けたフェ
ライト基板の上下面に隣り合う列の貫通穴を結ぶように
傾斜して導電性塗料を印刷焼付けして第１，第２，第
３，第４のコイルを形成し、この第１と第２のコイルお
よび第３と第４のコイルが互いにフェライト基板を介し
て交叉するように上下面に交互に形成したものである。Means for Solving the Problems And technical means of the present invention for solving the above problems,
The first, second, third, and second printings are performed by printing and baking the conductive coating on the upper and lower surfaces of the ferrite substrate having through-holes plated with through-holes so as to connect the through-holes in the adjacent rows. A fourth coil is formed, and the first and second coils and the third and fourth coils are alternately formed on the upper and lower surfaces so as to intersect with each other via the ferrite substrate.
作用 この技術的手段による作用は次のようになる。Action The action of this technical means is as follows.
すなわち、フェライト基板に穴を設け、この穴にスルー
ホールメッキを施し、上下にコイルとなる導電性ペース
トを、各穴に通して接続するように印刷を行なえば、従
来のリングコアに巻線を施したのと同様に、閉フェライ
トコアにコイルを巻回したものと同等になる。これを上
下導体を交叉するように配置すれば、結合のバランスは
良好な状態が得られる。That is, a hole is formed in the ferrite substrate, through-hole plating is applied to this hole, and printing is performed so that the conductive paste that will become the coil is connected through the holes, and then winding is applied to the conventional ring core. Similar to the above, it is equivalent to a coil wound around a closed ferrite core. If this is arranged so that the upper and lower conductors cross each other, a good balance of coupling can be obtained.
この結果、各コイルの線長は同等となり、結合バラツ
キ、インピーダンスバラツキの非常に小さいもので構成
できるようになる。As a result, the coils have the same wire length, and the coils can be configured with very small coupling variations and impedance variations.
実施例 以下本発明の一実施例を添付図面にもとづいて説明す
る。Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.
第１図(a)，(b)において、フェライト基板１に一定の間
隔をもって４列の貫通穴１２ａ〜１２ｅ，１２ｆ〜１２
ｊ，１２ｌ〜１２ｐ，１２ｑ〜１２ｕと１２ｋを設け、
この貫通穴１２ａ〜１２ｕにはスルーホールメッキを施
し、フェライト基板１の上面に導電性塗料を貫通穴１２
ａと１２ｉ，１２ｂと１２ｈ，１２ｃと１２ｇ，１２ｄ
と１２ｆ，１２ｐと１２ｒ，１２ｏと１２ｓ，１２ｎと
１２ｔ，１２ｍと１２ｕを傾斜して接続するように印刷
し、そして同時に貫通穴１２ａ，１２ｋ，１２ｌを接続
するように導電性塗料を印刷し、さらにフェライト基板
１の下面に１２ｊと１２ｂ，１２ｍと１２ｅ，１２ｈと
１２ｄ，１２ｇと１２ｅ，１２ｑと１２ｏ，１２ｒと１
２ｎ，１２ｓと１２ｍ，１２ｔと１２ｌとを上面の傾斜
して形成される導電性塗料と交叉するように傾斜して接
続するように導電性塗料を印刷すると同時に貫通穴１２
ｅと端子Ｔ1，貫通穴１２ｆと１２ｐと端子Ｔ2，貫通穴
１２ｑと端子Ｔ3、貫通穴１２ｕと１２ｊと端子Ｔ5，貫
通穴１２ｋと端子Ｔ4を接続するように印刷する。こう
することにより、貫通穴１２ａ〜１２ｉ〜１２ｃ〜１２
ｇ〜１２ｅの範囲の第１のコイル２が構成される。１２
ａと１２ｉはフェライト基板１の上面から１２ｉの貫通
穴のスルーホールメッキを通してフェライト基板１の下
面の１２ｉと１２ｃの範囲につながり、そして１２ｃの
貫通穴のスルーホールメッキを通してフェライト基板１
の上面の１２ｃと１２ｇの範囲につながり、さらに１２
ｇの貫通穴のスルーホールメッキを通してフェライト基
板１の下面の１２ｇと１２ｅの範囲へと続き、フェライ
ト基板１に導電性塗料にて第１のコイル２が構成された
ことになる。尚外部への接続は、フェライト基板１の下
面で１２ｅとＴ1，１２ｆと１２ｐとＴ2，１２ｑと
Ｔ3，１２ｋとＴ4，１２ｊと１２ｕとＴ5と接続され
る。第２のコイル３，第３のコイル４，第４のコイル５
も同様の方法にて構成することができる。In FIGS. 1 (a) and 1 (b), four rows of through holes 12a to 12e, 12f to 12 are formed in the ferrite substrate 1 at regular intervals.
j, 12l to 12p, 12q to 12u and 12k are provided,
The through holes 12a to 12u are plated with through holes, and conductive paint is applied to the upper surface of the ferrite substrate 1 through the through holes 12.
a and 12i, 12b and 12h, 12c and 12g, 12d
And 12f, 12p and 12r, 12o and 12s, 12n and 12t, 12m and 12u are printed so as to be connected at an angle, and at the same time, conductive paint is printed so as to connect the through holes 12a, 12k and 12l. Further, on the lower surface of the ferrite substrate 1, 12j and 12b, 12m and 12e, 12h and 12d, 12g and 12e, 12q and 12o, 12r and 1 are formed.
2n, 12s and 12m, 12t and 12l are printed with the conductive paint so as to be connected so as to be inclined so as to intersect the conductive paint formed on the upper surface at the same time as the through hole 12
e and terminal T 1 , through holes 12f and 12p and terminal T 2 , through hole 12q and terminal T 3 , through holes 12u and 12j and terminal T 5 , and through hole 12k and terminal T 4 are printed. By doing so, the through holes 12a to 12i to 12c to 12
The 1st coil 2 of the range of g-12e is comprised. 12
a and 12i are connected from the upper surface of the ferrite substrate 1 to the areas 12i and 12c on the lower surface of the ferrite substrate 1 through through hole plating of the through hole 12i, and through the through hole plating of the through hole of 12c.
Connected to the range of 12c and 12g on the upper surface of
The first coil 2 is formed on the ferrite substrate 1 by the conductive paint, continuing to the range of 12g and 12e on the lower surface of the ferrite substrate 1 through the through hole plating of the g through hole. For the external connection, the lower surface of the ferrite substrate 1 is connected to 12e and T 1 , 12f and 12p, T 2 , 12q and T 3 , 12k and T 4 , 12j and 12u and T 5 . Second coil 3, third coil 4, fourth coil 5
Can be configured in a similar manner.
すなわち、第２のコイル３は、貫通穴１２ｆ〜１２ｄ〜
１２ｈ〜１２ｂ〜１２ｊで、第３のコイル４は貫通穴１
２ｕ〜１２ｍ〜１２ｓ〜１２ｏ〜１２ｑで、第４のコイ
ル５は貫通穴１２ｐ〜１２ｒ〜１２ｎ〜１２ｔ〜１２ｌ
で構成されることになり、第１のコイル２と第２のコイ
ル３、第３のコイル４と第４のコイル５は各貫通穴間を
傾斜して形成される導電性塗料がフェライト基板１を介
して交叉して結合するように構成され第１と第２のコイ
ルで１つの伝送線路トランスを、第３と第４のコイルで
もう１つの伝送線路トランスを構成することになる。That is, the second coil 3 has the through holes 12f to 12d.
12h to 12b to 12j, the third coil 4 has a through hole 1
2u to 12m to 12s to 12o to 12q, and the fourth coil 5 has through holes 12p to 12r to 12n to 12t to 12l.
The first coil 2 and the second coil 3, and the third coil 4 and the fourth coil 5 are formed by inclining the through holes so that the conductive paint is formed on the ferrite substrate 1. The first and second coils constitute one transmission line transformer, and the third and fourth coils constitute another transmission line transformer.
この結果構成されたバランコイルの等価回路は第２図の
ようになる。The equivalent circuit of the resulting balun coil is as shown in FIG.
発明の効果 以上のように本発明は構成されるため、コイルを閉磁気
回路に構成しており安定な結合状態を得ることができ、
また各コイルの線長は同等となるので結合バラツキ、イ
ンピーダンスのバラツキの小さいものとすることができ
産業的価値の大なるものである。Effects of the Invention Since the present invention is configured as described above, the coil is configured in a closed magnetic circuit, and a stable coupled state can be obtained,
Further, since the wire lengths of the respective coils are the same, it is possible to reduce coupling variations and impedance variations, which is of great industrial value.
第１図(a)，(b)は本発明の一実施例のバランコイルを示
す平面図及び側面図、第２図は同バランコイルの等価回
路図、第３図は従来のバランコイルを示す平面図であ
る。 １……フェライト基板、２，３，４，５……コイル、１
２ａ〜１２ｕ……貫通穴。1 (a) and 1 (b) are a plan view and a side view showing a balun coil of an embodiment of the present invention, FIG. 2 is an equivalent circuit diagram of the balun coil, and FIG. 3 is a conventional balun coil. It is a top view. 1 ... Ferrite substrate, 2, 3, 4, 5 ... Coil, 1
2a-12u ... through holes.
Claims (1)
を設けたフェライト基板の上下面に隣り合う列の貫通穴
を結ぶように傾斜して導電性塗料を印刷焼付けして第
１，第２，第３，第４のコイルを形成し、この第１と第
２のコイルおよび第３と第４のコイルが互いにフェライ
ト基板を介して交叉するように上下面に交互に形成して
２組の伝送線路トランスとし、第１のコイルと第４のコ
イル、第４のコイルと第２のコイル、第２のコイルと第
３のコイルを接続したバランコイル。1. A conductive coating is printed and baked by inclining the upper and lower surfaces of a ferrite substrate provided with four rows of through holes plated with through holes so as to connect the through holes of adjacent rows. The second, third and fourth coils are formed, and the first and second coils and the third and fourth coils are alternately formed on the upper and lower surfaces so as to intersect with each other through the ferrite substrate, and two sets are formed. A balun coil in which the first coil and the fourth coil, the fourth coil and the second coil, and the second coil and the third coil are connected to each other as the transmission line transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5001285A JPH0666192B2 (en) | 1985-03-13 | 1985-03-13 | Balun coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5001285A JPH0666192B2 (en) | 1985-03-13 | 1985-03-13 | Balun coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61208912A JPS61208912A (en) | 1986-09-17 |
| JPH0666192B2 true JPH0666192B2 (en) | 1994-08-24 |
Family
ID=12847082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5001285A Expired - Fee Related JPH0666192B2 (en) | 1985-03-13 | 1985-03-13 | Balun coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0666192B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01161313U (en) * | 1988-04-28 | 1989-11-09 |
-
1985
- 1985-03-13 JP JP5001285A patent/JPH0666192B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61208912A (en) | 1986-09-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |