JPH0437567B2 - - Google Patents
Info
- Publication number
- JPH0437567B2 JPH0437567B2 JP63094089A JP9408988A JPH0437567B2 JP H0437567 B2 JPH0437567 B2 JP H0437567B2 JP 63094089 A JP63094089 A JP 63094089A JP 9408988 A JP9408988 A JP 9408988A JP H0437567 B2 JPH0437567 B2 JP H0437567B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- ground electrode
- electrodes
- feedthrough capacitor
- multilayer feedthrough
- 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
- 239000003990 capacitor Substances 0.000 claims description 28
- 239000003989 dielectric material Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000037431 insertion Effects 0.000 description 7
- 238000003780 insertion Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
Landscapes
- Ceramic Capacitors (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、例えばノイズフイルタ等に用いら
れる積層貫通コンデンサに関し、特にその高周波
域での挿入損失特性の改善手段に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a multilayer feedthrough capacitor used, for example, in a noise filter, and particularly to means for improving its insertion loss characteristics in a high frequency range.
第５図は、積層貫通コンデンサの一例を示す斜
視図である。
FIG. 5 is a perspective view showing an example of a multilayer feedthrough capacitor.
この積層貫通コンデンサは、セラミツクス等の
誘電体４中に、それを貫通する３本の貫通電極と
それに対向するアース電極とを誘電体を挟んで交
互に積層し、かつ各貫通電極の両端部に外部電極
６ａ〜６ｃを、アース電極の両端部に外部電極８
をそれぞれ接続したものである。 This feedthrough multilayer capacitor has a dielectric material 4 made of ceramics, etc., in which three through electrodes passing through the dielectric material 4 and a ground electrode opposing the dielectric material are alternately laminated with the dielectric material in between. The external electrodes 6a to 6c are connected to the external electrodes 8 at both ends of the ground electrode.
are connected to each other.
このような積層貫通コンデンサは、従来は第６
図に示すように、セラミツクグリーンシート等の
焼成前の誘電体シート１４上に３本の貫通電極１
６を付与（例えば印刷）したものと、同じく誘電
体シート１４上に幅広のアース電極１８を付与し
たものとを複数枚それぞれ交互に積層し、かつ必
要に応じて上下両側に電極を付与しない誘電体シ
ート１４を重ね、そして全体を圧着、焼成し、更
に前述したような外部電極６ａ〜６ｃ，８を付与
して構成されている。 Conventionally, such multilayer feedthrough capacitors
As shown in the figure, three through electrodes 1 are placed on a dielectric sheet 14 such as a ceramic green sheet before firing.
6 is applied (for example, by printing), and a dielectric sheet 14 with a wide ground electrode 18 is alternately laminated, and if necessary, a dielectric sheet with no electrodes applied on both the upper and lower sides. The body sheets 14 are stacked, the whole is pressed and fired, and the external electrodes 6a to 6c, 8 as described above are further provided.
第７図はその等価回路図であり、各貫通電極１
６をアース電極１８間にコンデンサＣがそれぞれ
形成されている。 FIG. 7 is an equivalent circuit diagram of each through electrode 1.
A capacitor C is formed between the ground electrode 18 and the ground electrode 18, respectively.
ところが、上記のような積層貫通コンデンサに
おいては、高周波域になる程アース電極１８上に
発生するインダクタンスが無視できなくなり、そ
れを各相ごとに集約して表すと、図示のように、
各コンデンサＣのアース電極１８とアース用の外
部電極８間に直列にインダクタンスＬがそれぞれ
挿入された格好になる。
However, in the multilayer feedthrough capacitor as described above, the higher the frequency range is, the more the inductance generated on the ground electrode 18 cannot be ignored, and when expressed collectively for each phase, as shown in the figure,
An inductance L is inserted in series between the ground electrode 18 of each capacitor C and the grounding external electrode 8.
そのため、特に中央のコンデンサＣでは、外部
電極８までの距離が長くなるためアース側のイン
ダクタンスＬが他のものに比べて大きくなり、そ
のため貫通電極１６から一旦アース電極１８にバ
イパスされたノイズ等の高周波信号が再び貫通電
極１６に戻り易くなる。 Therefore, especially in the center capacitor C, the distance to the external electrode 8 is longer, so the inductance L on the ground side is larger than that of other capacitors. This makes it easier for the high frequency signal to return to the through electrode 16 again.
その結果、中央の相の、ひいては積層貫通コン
デンサ全体としての高周波域での挿入損失特性が
悪くなるという問題があつた。 As a result, there was a problem in that the insertion loss characteristics of the central phase and, ultimately, of the entire multilayer feedthrough capacitor in the high frequency range deteriorated.
そこでこの発明は、高周波域での挿入損失特性
を改善した積層貫通コンデンサを提供することを
目的とする。 Therefore, an object of the present invention is to provide a multilayer feedthrough capacitor with improved insertion loss characteristics in a high frequency range.
この発明の積層貫通コンデンサは、前述したよ
うなアース電極の一端から他端にかけて、貫通電
極と交差するように１以上のスリツトを入れるこ
とにより２以上のアース電極としたことを特徴と
する。
The multilayer feedthrough capacitor of the present invention is characterized in that one or more slits are formed from one end of the ground electrode to the other end so as to intersect the through electrode, thereby forming two or more ground electrodes.
上記のようにアース電極にスリツトを入れて２
以上のアース電極にすることで、高周波域での挿
入損失特性が改善される。これは、スリツトによ
つてアース電極を分割することで、一旦アース電
極にバイパスされた高周波信号が再び貫通電極に
戻りにくくなるからであると考えられる。
Make a slit in the ground electrode as shown above.
By using the above ground electrode, insertion loss characteristics in a high frequency range are improved. This is thought to be because dividing the earth electrode by the slit makes it difficult for high frequency signals that have been bypassed to the earth electrode to return to the through electrode again.
第１図は、この発明の一実施例に係る積層貫通
コンデンサの内部構造を示す分解斜視図である。
この積層貫通コンデンサの外観は、第５図と同様
であるのでその図示を省略する。また、第６図の
例と同等部分には同一符号を付し、以下において
は従来例との相違点を主に説明する。
FIG. 1 is an exploded perspective view showing the internal structure of a multilayer feedthrough capacitor according to an embodiment of the present invention.
The appearance of this multilayer feedthrough capacitor is the same as that shown in FIG. 5, so its illustration is omitted. Further, parts equivalent to those in the example of FIG. 6 are given the same reference numerals, and the differences from the conventional example will be mainly explained below.
この実施例の積層貫通コンデンサにおいては、
前述したようなアース電極１８に相当する各アー
ス電極２８の中央部に、その一端から他端にかけ
て貫通電極１６と交差する方向に１本のスリツト
２０を入れて、各アース電極２８をそれぞれ２分
割している。 In the multilayer feedthrough capacitor of this example,
A slit 20 is inserted in the center of each earth electrode 28 corresponding to the earth electrode 18 as described above in a direction intersecting the through electrode 16 from one end to the other end, thereby dividing each earth electrode 28 into two. are doing.
第２図はこの積層貫通コンデンサの等価回路図
であり、各貫通電極１６とアース電極２８間に二
つのコンデンサC1，C2がそれぞれ形成されると
共に、高周波域でアース電極２８上に形成される
インダクタンスを各相ごとに集約すると、各コン
デンサC1，C2を形成するアース電極２８とアー
ス用の外部電極８間に直列に二つのインダクタン
スL1，L2がそれぞれ挿入された格好になる。 FIG. 2 is an equivalent circuit diagram of this multilayer feedthrough capacitor, in which two capacitors C 1 and C 2 are formed between each feedthrough electrode 16 and the ground electrode 28, and two capacitors C 1 and C 2 are formed on the ground electrode 28 in the high frequency range. When the inductances are aggregated for each phase, two inductances L 1 and L 2 are inserted in series between the ground electrode 28 forming each capacitor C 1 and C 2 and the grounding external electrode 8. .
その結果このような積層貫通コンデンサにおい
ては、各相の高周波域での挿入損失特性が改善さ
れる。これは、アース電極２８を２分割すること
で、一旦アース電極２８にバイパスされたノイズ
等の高周波信号が再び貫通電極１６に戻りにくく
なるからであると考えられる。特にこの特性改善
効果は、従来特性が他に比べて悪かつた中央の相
において著しい。 As a result, in such a multilayer feedthrough capacitor, the insertion loss characteristics of each phase in the high frequency range are improved. This is thought to be because by dividing the ground electrode 28 into two, it becomes difficult for high frequency signals such as noise that have been once bypassed to the ground electrode 28 to return to the through electrode 16 again. This characteristic improvement effect is particularly remarkable in the central phase, where conventional characteristics were worse than others.
尚、スリツト２０を複数本にして、アース電極
２８の分割数を３以上にしても良い。 Incidentally, the number of slits 20 may be made into a plurality, and the number of divisions of the ground electrode 28 may be three or more.
また、例えば第３図に示すように、各貫通電極
１６の中央部を細くしても良く、そのようにすれ
ば第４図に示すように、高周波域においてコンデ
ンサC1とC2間で貫通電極１６に直列にインダク
タンスL3が入る格好になり、高周波域での挿入
損失特性を更に改善することができる。 Furthermore, as shown in FIG. 3, for example, the central part of each through electrode 16 may be made thinner, and in this case , as shown in FIG. The inductance L3 is inserted in series with the electrode 16, and the insertion loss characteristics in the high frequency range can be further improved.
また、以上はいずれも貫通電極１６が３本以上
の例を説明したが、貫通電極１６は１本以上であ
れば良いのは勿論である。 In addition, although the examples in which the number of through electrodes 16 is three or more have been described above, it goes without saying that the number of through electrodes 16 may be one or more.
以上のようにこの発明によれば、アース電極に
スリツトを入れることで、高周波域での挿入損失
特性を改善することができる。
As described above, according to the present invention, insertion loss characteristics in a high frequency range can be improved by providing a slit in the ground electrode.
第１図は、この発明の一実施例に係る積層貫通
コンデンサの内部構造を示す分解斜視図である。
第２図は、第１図の積層貫通コンデンサの等価回
路図である。第３図は、貫通電極の他の例を示す
斜視図である。第４図は、第３図の貫通電極を用
いた積層貫通コンデンサの部分的な等価回路図で
ある。第５図は、積層貫通コンデンサの一例を示
す斜視図である。第６図は、従来の積層貫通コン
デンサの内部構造を示す分解斜視図である。第７
図は、第６図の積層貫通コンデンサの等価回路図
である。
１４……誘電体シート、１６……貫通電極、２
０……スリツト、２８……アース電極。
FIG. 1 is an exploded perspective view showing the internal structure of a multilayer feedthrough capacitor according to an embodiment of the present invention.
FIG. 2 is an equivalent circuit diagram of the multilayer feedthrough capacitor shown in FIG. 1. FIG. 3 is a perspective view showing another example of the through electrode. FIG. 4 is a partial equivalent circuit diagram of a multilayer feedthrough capacitor using the through electrode shown in FIG. FIG. 5 is a perspective view showing an example of a multilayer feedthrough capacitor. FIG. 6 is an exploded perspective view showing the internal structure of a conventional multilayer feedthrough capacitor. 7th
The figure is an equivalent circuit diagram of the multilayer feedthrough capacitor shown in FIG. 14...Dielectric sheet, 16...Through electrode, 2
0...Slit, 28...Earth electrode.
Claims (1)
とそれに対向するアース電極とを誘電体を挟んで
積層して成る積層貫通コンデンサにおいて、前記
アース電極の一端から他端にかけて、貫通電極と
交差するように１以上のスリツトを入れることに
より２以上のアース電極としたことを特徴とする
積層貫通コンデンサ。1. In a multilayer feedthrough capacitor in which one or more through electrodes penetrating through a dielectric material and a ground electrode facing the dielectric material are laminated with the dielectric interposed therebetween, from one end of the ground electrode to the other end, the through electrodes intersect with the through electrodes. A feedthrough multilayer capacitor characterized in that one or more slits are formed to form two or more ground electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63094089A JPH01265509A (en) | 1988-04-15 | 1988-04-15 | Laminated through-type capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63094089A JPH01265509A (en) | 1988-04-15 | 1988-04-15 | Laminated through-type capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01265509A JPH01265509A (en) | 1989-10-23 |
| JPH0437567B2 true JPH0437567B2 (en) | 1992-06-19 |
Family
ID=14100732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63094089A Granted JPH01265509A (en) | 1988-04-15 | 1988-04-15 | Laminated through-type capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01265509A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0635462Y2 (en) * | 1988-08-11 | 1994-09-14 | 株式会社村田製作所 | Multilayer capacitor |
| CA2116995C (en) * | 1993-03-05 | 1999-01-12 | Kazunori Yamate | Three-terminal capacitor and assembly |
| JP3087495B2 (en) * | 1993-03-05 | 2000-09-11 | 松下電器産業株式会社 | Capacitors and shield cases |
| JPH0935998A (en) * | 1995-07-21 | 1997-02-07 | Matsushita Electric Ind Co Ltd | Laminated feedthrough capacitor |
| JP2003152490A (en) | 2001-11-16 | 2003-05-23 | Murata Mfg Co Ltd | Laminated lc composite component |
| KR102450593B1 (en) * | 2016-04-27 | 2022-10-07 | 삼성전기주식회사 | Capacitor Component |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5580313A (en) * | 1978-12-12 | 1980-06-17 | Tdk Electronics Co Ltd | Laminated continuous capacitor |
-
1988
- 1988-04-15 JP JP63094089A patent/JPH01265509A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5580313A (en) * | 1978-12-12 | 1980-06-17 | Tdk Electronics Co Ltd | Laminated continuous capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01265509A (en) | 1989-10-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |