JPH01208818A - Lc composite part - Google Patents
Lc composite partInfo
- Publication number
- JPH01208818A JPH01208818A JP3365888A JP3365888A JPH01208818A JP H01208818 A JPH01208818 A JP H01208818A JP 3365888 A JP3365888 A JP 3365888A JP 3365888 A JP3365888 A JP 3365888A JP H01208818 A JPH01208818 A JP H01208818A
- Authority
- JP
- Japan
- Prior art keywords
- dielectric layer
- dielectric
- sheet
- conductor
- sintered
- 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.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims description 19
- 239000004020 conductor Substances 0.000 claims abstract description 13
- 238000005245 sintering Methods 0.000 abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 230000007935 neutral effect Effects 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- 239000011521 glass Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 3
- 238000000465 moulding Methods 0.000 abstract 1
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明はＬＣ複合部品に関し、特にストリップ導体の
上に低抵抗率の磁性体層と高抵抗率の誘電体層とを形成
し、さらにその上に外部電極を形成し、ストリップ導体
と磁性体層とでインダクタンス（Ｌ）成分をまたストリ
ップ導体、誘電体層および外部電極によってキャパシタ
ンス（Ｃ）成分をそれぞれ形成する、分布定数型のＬＣ
複合部品に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to LC composite parts, in particular forming a low resistivity magnetic layer and a high resistivity dielectric layer on a strip conductor, and furthermore, forming a low resistivity magnetic layer and a high resistivity dielectric layer on a strip conductor. A distributed constant type LC in which an external electrode is formed on the top, an inductance (L) component is formed by a strip conductor and a magnetic layer, and a capacitance (C) component is formed by the strip conductor, dielectric layer and external electrode.
Regarding composite parts.
この種のＬＣ複合部品の一例が、たとえば特公昭５６−
２５８１７号公報において開示されている。An example of this type of LC composite part is, for example,
It is disclosed in Japanese Patent No. 25817.
従来技術では、たとえば特開昭６２−８５１２号公報に
示されるような集中定数型のものに比べて、周波数特性
がよいという利点はあるものの、誘電体層を電気泳動に
よって形成しているため、緻密な誘電体層が形成できず
、したがって分布キャパシタンスが大きなＬＣ複合部品
は形成できなかった。Although the conventional technology has the advantage of better frequency characteristics than the lumped constant type as shown in JP-A-62-8512, for example, the dielectric layer is formed by electrophoresis. A dense dielectric layer could not be formed, and therefore an LC composite component with large distributed capacitance could not be formed.
それゆえに、この発明の主たる目的は、緻密な誘電体層
を形成することによって分布キャパシタンスを大きくし
て小形化の可能な、ＬＣ複合部品を提供することである
。Therefore, the main objective of the present invention is to provide an LC composite component that can be made smaller by increasing the distributed capacitance by forming a dense dielectric layer.
この発明は、第１導体と、磁性体層と誘電体層とを未焼
結状態で接合した後に一体焼結して形成した、ＬＣ複合
部品である。The present invention is an LC composite component formed by joining a first conductor, a magnetic layer, and a dielectric layer in an unsintered state and then sintering them together.
未焼結状態の磁性体層がまず形成され、その磁性体層の
上にさらに未焼結状態の誘電体層が形成される。その後
、両者は接合され一体焼結される。さらに、ストリップ
ラインとして作用する第１導体とアースとして作用する
第２導体とが形成される。An unsintered magnetic layer is first formed, and an unsintered dielectric layer is further formed on the magnetic layer. Thereafter, both are joined and integrally sintered. Furthermore, a first conductor acting as a strip line and a second conductor acting as a ground are formed.
この発明によれば、緻密な誘電体層を形成することがで
きるので、小形でしかも分布キャパシタンスが大きいＬ
Ｃ複合部品が得られる。According to this invention, since a dense dielectric layer can be formed, L
C composite parts are obtained.
この発明の上述の目的、その他の目的、特徴および利点
は、図面を参照して行う以下の実施例の詳細な説明から
一層明らかとなろう。The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.
第１図はこの発明の一実施例を示す断面図である。ＬＣ
複合部品１０は円筒状のユニット１２を含み、このユニ
ット１２は磁性体層１４およびその磁性体層１４の上に
形成された誘電体ＦＦ１６を含む。ユニット１２すなわ
ち磁性体層１４の内壁゛には、ストリップラインとして
の電極１８が形成され、誘電体層１６の外表面にはアー
スとしての電極２０が形成される。このようなＬＣ複合
部品１０は、典型的には、高周波ノイズフィルタとして
用いられる。具体的には、ＬＣ複合部品ｌＯは、第１図
において１点鎖線で示すようなコネクタ（図示せず）の
ピン２２に嵌め込んで使用されるこの実施例のＬＣ複合
部品１０は、たとえば、次の手順で製造される。まず、
第２図に示すように、直径１．２則の炭素棒２４の外周
に未焼結の磁性体シート１４ ′を巻き付ける。この磁
性体材料としては、０．１２ＮｉＯ＋０，２８ＺｎＯ＋
０．０８ＣｕＯ＋０．５２Ｆｅｚ Ｏｚのように、還元
雰囲気で焼成することにより小さい比抵抗となるものが
好適する。磁性体シート１４′の上には、（Ｂａｄ、８
ＣａＯ，２）（Ｔｉｅ、８５Ｚｒｏ、１５）（ｈのよう
な還元雰囲気で焼成しても大きい比抵抗となる非還元性
誘電体９０ｗｔ％と、０ 、 ０５ Ｌ ｉ ｔ Ｏ＋
０ 、 ３ Ｂ ａ Ｏ＋ ０．３ Ｂｚ Ｏｘ ＋
０． ３５’Ｓ ｔ Ｏｘのガラス１０ｗｔ％とからな
る未焼結の誘電体シート１６ ′を巻き付ける。その後
、ラバープレス法で誘電体シート１６′および磁性体シ
ート１４′を圧縮接合することによって、その外径がた
とえば２．４ｍｍの積層生ユニット１２′が成形される
。FIG. 1 is a sectional view showing an embodiment of the present invention. L.C.
The composite component 10 includes a cylindrical unit 12, and this unit 12 includes a magnetic layer 14 and a dielectric FF 16 formed on the magnetic layer 14. An electrode 18 as a strip line is formed on the inner wall of the unit 12, that is, the magnetic layer 14, and an electrode 20 as a ground is formed on the outer surface of the dielectric layer 16. Such an LC composite component 10 is typically used as a high frequency noise filter. Specifically, the LC composite component 10 of this embodiment, which is used by being fitted into the pin 22 of a connector (not shown) as shown by the dashed line in FIG. It is manufactured using the following steps. first,
As shown in FIG. 2, an unsintered magnetic sheet 14' is wound around the outer periphery of a carbon rod 24 having a diameter of 1.2. This magnetic material is 0.12NiO+0.28ZnO+
It is preferable to use a material such as 0.08CuO+0.52Fez Oz, which has a low resistivity when fired in a reducing atmosphere. On the magnetic sheet 14', (Bad, 8
CaO, 2) (Tie, 85 Zro, 15) (90 wt% non-reducing dielectric material that has a large resistivity even when fired in a reducing atmosphere such as h, and 0, 05 Lit O+
0, 3 B a O+ 0.3 Bz Ox +
0. An unsintered dielectric sheet 16' made of 10 wt % of 35'S t Ox glass is wrapped around it. Thereafter, the dielectric sheet 16' and the magnetic sheet 14' are compression-bonded using a rubber press method to form a laminated raw unit 12' having an outer diameter of, for example, 2.4 mm.
次いで、炭素棒２４が挿入されたまま、積層生ユニット
１２′を、大気中６００℃で１時間焼成の後、窒素、ア
ルゴンなどの中性雰囲気または還元雰囲気中で、温度１
０００°Ｃで１時間焼成する。そうすると、炭素棒２４
が飛び、たとえば内径が１ｆｉ１１で外径が２ｍの第１
図図示の円筒形ユニット１２が得られる。Next, with the carbon rods 24 inserted, the laminated green unit 12' is fired in the atmosphere at 600°C for 1 hour, and then heated to a temperature of 1 in a neutral atmosphere or reducing atmosphere such as nitrogen or argon.
Bake at 000°C for 1 hour. Then, the carbon rod 24
For example, if the inner diameter is 1fi11 and the outer diameter is 2m, the first
The illustrated cylindrical unit 12 is obtained.
その後、ユニット１２の内壁および外表面に、銅を主体
とする導電性のペーストをそれぞれ塗布し、温度７００
°Ｃの中性雰囲気で２０分間焼き付ける。このようにし
て、第１図図示のＬ（Ｊｊｉ合部品１０が得られる。After that, a conductive paste mainly composed of copper is applied to the inner wall and outer surface of the unit 12, and the temperature is set to 700.
Bake for 20 minutes in a neutral atmosphere at °C. In this way, the L (Jji joint part 10 shown in FIG. 1) is obtained.
ＬＣ複合部品１０は第３図に示す等価回路を有し、スト
リップラインすなわち電極１８の両端間には、磁性体層
１４との相互作用によって分布インダクタンスが形成さ
れ、電極１８と電極２０間には、誘電体層１６によって
分布キャパシタンスが形成される。The LC composite component 10 has an equivalent circuit shown in FIG. , a distributed capacitance is formed by the dielectric layer 16.
このようなＬＣ複合部品１０は、第１図に示すように、
導電性のピン２２に嵌め込まれ、他方電極２０が接地さ
れた状態で使用される。導電性のピン２２に所定の周波
数の信号を印加して挿入損失を測定した結果が次表に示
される。Such an LC composite component 10, as shown in FIG.
It is fitted into a conductive pin 22 and used with the other electrode 20 grounded. The following table shows the results of measuring the insertion loss by applying a signal of a predetermined frequency to the conductive pin 22.
表
周波数（ＭＨｚ） １ ３ １０ ３０ １０
０ ３００挿入損失（ｄＢ） ０．３ １．４ ２６
６７ ８５ ９５表から明らかなように、この
ＬＣ複合部品１０は、周波数が高くなると、それに応じ
て挿入損失が大きくなり、特性のよい高周波ノイズフィ
ルタとなる。Table frequency (MHz) 1 3 10 30 10
0 300 insertion loss (dB) 0.3 1.4 26
As is clear from Table 67, 85, and 95, as the frequency increases, the insertion loss of this LC composite component 10 increases accordingly, making it a high-frequency noise filter with good characteristics.
なお、以上の実験では、磁性体層１４は、その比抵抗が
２Ω・１のものを用いた。焼結雰囲気を調整して磁性体
層１４の比抵抗を２０Ω・１とした場合、挿入損失は３
０ｄＢ以上にはならなかった。これは、磁性体層１４の
比抵抗が１０Ω・１以上になると、誘電体層１６の効果
が減殺されて高周波ノイズがアースに至らなくなるから
であると考えられる。In the above experiment, the magnetic layer 14 used had a specific resistance of 2Ω·1. When the specific resistance of the magnetic layer 14 is set to 20Ω・1 by adjusting the sintering atmosphere, the insertion loss is 3.
It did not exceed 0 dB. This is considered to be because when the specific resistance of the magnetic layer 14 becomes 10Ω·1 or more, the effect of the dielectric layer 16 is reduced and high frequency noise does not reach the ground.
第４図はこの発明の他の実施例を示す断面図解図である
。この実施例のＬＣ部品１０は、第１図図示のものとは
異なり、チップ形ＬＣ複合部品である。したがって、ユ
ニットには中空部がなく、第１導体すなわちストリップ
ライン、２６はユニット内に形成される。そして、焼結
後のユニットの両端に、それぞれがストリップライン２
６と電気的に接続されるように、外部電極３０および３
２が付与される。この実施例のＬＣ複合部品１０も先の
実施例と同様にして作ることができるが、ここでは重複
する説明は省略する。FIG. 4 is an illustrative cross-sectional view showing another embodiment of the present invention. The LC component 10 of this embodiment is a chip-type LC composite component, unlike the one shown in FIG. Therefore, there is no hollow space in the unit and the first conductor or stripline, 26, is formed within the unit. Then, there are two strip lines at both ends of the unit after sintering.
external electrodes 30 and 3 so as to be electrically connected to
2 is given. Although the LC composite component 10 of this embodiment can be made in the same manner as in the previous embodiment, redundant explanation will be omitted here.
なお、磁性体層１４や誘電体層１６の材料としては、実
施例以外のもの、たとえばＭｎＺｎフェライトやチタン
酸ストロンチウムが用いられてもよい。Note that materials other than those in the embodiments, such as MnZn ferrite and strontium titanate, may be used as the material for the magnetic layer 14 and the dielectric layer 16.
また、上述の実施例では、中性雰囲気または還元性雰囲
気で焼結したが、磁性体層１４および誘電体層１６の組
成に応じて、空気中（酸化雰囲気）で焼成してもよく、
また酸化雰囲気で焼成した後に還元するようにしてもよ
い。Further, in the above embodiments, sintering was performed in a neutral atmosphere or a reducing atmosphere, but depending on the composition of the magnetic layer 14 and the dielectric layer 16, sintering may be performed in air (oxidizing atmosphere).
Alternatively, reduction may be performed after firing in an oxidizing atmosphere.
第１図はこの発明の一実施例を示す断面図解図である。
第２図は第１図実施例の製造工程を説明するための図解
図である。
第３図は第１図実施例の等価回路図である。
第４図はこの発明の他の実施例を示す断面図解図である
。
図において、１０はＬＣ複合部品、１４は磁性体層、１
４′は磁性体シート、１６は誘電体層、１６’は誘電体
シート、１８および２０は電極、２２は導電性ピンを示
す。
第１図 曵
第２図
第３図
第４図FIG. 1 is an illustrative cross-sectional view showing one embodiment of the present invention. FIG. 2 is an illustrative view for explaining the manufacturing process of the embodiment shown in FIG. FIG. 3 is an equivalent circuit diagram of the embodiment shown in FIG. FIG. 4 is an illustrative cross-sectional view showing another embodiment of the present invention. In the figure, 10 is an LC composite component, 14 is a magnetic layer, 1
4' is a magnetic sheet, 16 is a dielectric layer, 16' is a dielectric sheet, 18 and 20 are electrodes, and 22 is a conductive pin. Figure 1 Figure 2 Figure 3 Figure 4
Claims (1)
体層と、前記磁性体層の上に形成された誘電体層と、前
記誘電体層の上に形成された第２導体とを備えるＬＣ複
合部品において、 前記磁性体層と前記誘電体層とを未焼結状態で接合した
後に一体焼結して形成したことを特徴とする、ＬＣ複合
部品。[Scope of Claims] A first conductor, a low-resistivity magnetic layer formed on the first conductor, a dielectric layer formed on the magnetic layer, and a dielectric layer formed on the dielectric layer. and a second conductor formed in the LC composite part, characterized in that the magnetic layer and the dielectric layer are bonded in an unsintered state and then integrally sintered to form the LC composite part. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3365888A JPH01208818A (en) | 1988-02-16 | 1988-02-16 | Lc composite part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3365888A JPH01208818A (en) | 1988-02-16 | 1988-02-16 | Lc composite part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01208818A true JPH01208818A (en) | 1989-08-22 |
| JPH0580128B2 JPH0580128B2 (en) | 1993-11-08 |
Family
ID=12392548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3365888A Granted JPH01208818A (en) | 1988-02-16 | 1988-02-16 | Lc composite part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01208818A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007129061A (en) * | 2005-11-04 | 2007-05-24 | Taiyo Yuden Co Ltd | High-frequency electronic component |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5625817A (en) * | 1979-08-08 | 1981-03-12 | Mitsubishi Electric Corp | Directional coupler |
| JPS6296828U (en) * | 1985-12-09 | 1987-06-20 |
-
1988
- 1988-02-16 JP JP3365888A patent/JPH01208818A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5625817A (en) * | 1979-08-08 | 1981-03-12 | Mitsubishi Electric Corp | Directional coupler |
| JPS6296828U (en) * | 1985-12-09 | 1987-06-20 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007129061A (en) * | 2005-11-04 | 2007-05-24 | Taiyo Yuden Co Ltd | High-frequency electronic component |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0580128B2 (en) | 1993-11-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |