JPH097835A - Laminated noise countermeasure component - Google Patents
Laminated noise countermeasure componentInfo
- Publication number
- JPH097835A JPH097835A JP17281695A JP17281695A JPH097835A JP H097835 A JPH097835 A JP H097835A JP 17281695 A JP17281695 A JP 17281695A JP 17281695 A JP17281695 A JP 17281695A JP H097835 A JPH097835 A JP H097835A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- layers
- layer
- laminated
- magnetic permeability
- 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
- 230000035699 permeability Effects 0.000 claims abstract description 49
- 239000003990 capacitor Substances 0.000 claims abstract description 24
- 239000004020 conductor Substances 0.000 claims abstract description 22
- 239000000696 magnetic material Substances 0.000 claims abstract description 18
- 230000004907 flux Effects 0.000 claims abstract description 14
- 230000008859 change Effects 0.000 claims abstract description 8
- 230000001629 suppression Effects 0.000 claims description 23
- 238000010030 laminating Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 239000000470 constituent Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000003989 dielectric material Substances 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- KOMIMHZRQFFCOR-UHFFFAOYSA-N [Ni].[Cu].[Zn] Chemical compound [Ni].[Cu].[Zn] KOMIMHZRQFFCOR-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/0006—Printed inductances
- H01F17/0013—Printed inductances with stacked layers
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、異なる透磁率を有する
複数の磁性体層にそれぞれコイル導体を内蔵してこれら
のコイル導体を直列に接続した積層体、または誘電率が
異なる複数の誘電体層を積層し、各誘電体にそれぞれ対
向する内部電極を埋設してそれぞれ容量の異なるコンデ
ンサを構成すると共に、各コンデンサを並列に接続して
なる積層体により構成される積層ノイズ対策部品に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated body in which coil conductors are built in a plurality of magnetic layers having different magnetic permeability, and these coil conductors are connected in series, or a plurality of dielectrics having different permittivities. The present invention relates to a laminated noise suppression component that is formed by stacking layers and embedding internal electrodes facing each other in respective dielectrics to form capacitors having different capacities, and also by forming a laminated body in which capacitors are connected in parallel.
【０００２】[0002]
【従来の技術】印刷法やシート法等の厚膜形成法を用
い、磁性体とコイル導体とを積層してなるチップ状の積
層体によって構成された積層ノイズ対策部品において、
広い周波数帯域についてノイズ低減効果を得るため、特
公平３−３０２８２号公報においては、図６（Ａ）の斜
視図およびそのＧ−Ｇ断面図である（Ｂ）に示すよう
に、相対的に高透磁率（低周波用）、低透磁率（高周波
用）となる磁性体層１、２を積層し、各磁性体層１、２
にそれぞれコイル導体３、４を内蔵してインダクタ５、
６を構成すると共に、各磁性体層１、２に内蔵したコイ
ル導体３、４を積層体内部において直列に接続してなる
ものが提案されている。これら一連に接続されるコイル
導体３、４の両端は、チップ状に形成された積層体の側
面に設けられた端子電極７、８に接続される。2. Description of the Related Art A laminated noise suppression component composed of a chip-shaped laminated body formed by laminating a magnetic body and a coil conductor by using a thick film forming method such as a printing method or a sheet method,
In order to obtain a noise reduction effect in a wide frequency band, in Japanese Patent Publication No. 30282/1993, as shown in the perspective view of FIG. Magnetic layers 1 and 2 having a magnetic permeability (for low frequency) and a low magnetic permeability (for high frequency) are laminated to form each magnetic layer 1, 2.
The coil conductors 3 and 4 are respectively incorporated in the inductor 5,
It is proposed that the coil conductors 3 and 4 that are included in the magnetic material layers 1 and 2 are connected in series inside the laminated body while constituting the magnetic field layer 6. Both ends of the coil conductors 3 and 4 connected in series are connected to the terminal electrodes 7 and 8 provided on the side surface of the laminated body formed in a chip shape.
【０００３】図６に示した積層ノイズ対策部品におい
て、高透磁率層１と低透磁率層２とは、図７（Ａ）の上
段に示すように、それぞれ透磁率＝１となる周波数
ｆ1、ｆ2が異なり、低透磁率層２側のインダクタ６は、
高い周波数帯域におけるノイズ除去の役目を果たすよう
に期待される。In the laminated noise suppression component shown in FIG. 6, the high magnetic permeability layer 1 and the low magnetic permeability layer 2 have a frequency f 1 at which the magnetic permeability is 1 as shown in the upper part of FIG. 7 (A). , F 2 are different, and the inductor 6 on the low magnetic permeability layer 2 side is
It is expected to play a role of noise removal in the high frequency band.
【０００４】[0004]
【発明が解決しようとする課題】しかし図６（Ｂ）の断
面図に示すように、従来の積層ノイズ対策部品におい
て、磁束φは高透磁率層１と低透磁率層２の双方にわた
って順次通過することになり、起磁力Ｖmに対して高透
磁率層１の磁気抵抗Ｒm1と低透磁率の磁気抵抗Ｒm2とが
直列に接続された回路として把握され、さらに高透磁率
層１の透磁率が１となる周波数ｆ1より低い周波数にお
いては、積層ノイズ対策部品全体として図７（Ｃ）に示
すように、高透磁率層１と低透磁率層２からなるコアが
結合され、これにコイル導体３、４が巻かれたものと同
等の作用をなすものとして認識でき、高透磁率層１の透
磁率＝１となる周波数ｆ1より高く、かつ低透磁率層２
の透磁率が１となる周波数ｆ2より低い周波数帯域にお
いては、図７（Ｄ）に示すように、高透磁率層１が欠落
した磁気回路として認識できる。このため、図７（Ａ）
の下段に示すように、積層ノイズ対策部品全体としての
インピーダンスは、高透磁率層１によるインダクタ５に
よるインピーダンスよりやや高い程度となり、高周波用
の低透磁率層２の特性を十分に生かすことができなかっ
た。However, as shown in the sectional view of FIG. 6 (B), in the conventional laminated noise suppression component, the magnetic flux φ sequentially passes through both the high magnetic permeability layer 1 and the low magnetic permeability layer 2. Therefore, it is understood as a circuit in which the magnetic resistance R m1 of the high magnetic permeability layer 1 and the magnetic resistance R m2 of the low magnetic permeability are connected in series with respect to the magnetomotive force V m . at frequencies lower than the frequency f 1 the magnetic permeability is 1, as shown in FIG. 7 (C) as a whole multilayer anti-noise component, the core is coupled consisting high permeability layer 1 and the low-permeability layer 2, which It can be recognized that the coil conductors 3 and 4 have an effect equivalent to that of the coil conductors 3 and 4 wound around the coil conductors 3, and the magnetic permeability of the high magnetic permeability layer 1 is higher than the frequency f 1 at which the magnetic permeability is 1 and the low magnetic permeability layer 2
In the frequency band lower than the frequency f 2 at which the magnetic permeability of 1 is 1, it can be recognized as a magnetic circuit lacking the high magnetic permeability layer 1 as shown in FIG. 7D. Therefore, FIG. 7 (A)
As shown in the lower row, the impedance of the laminated noise suppression component as a whole is slightly higher than the impedance of the inductor 5 made of the high magnetic permeability layer 1, and the characteristics of the low magnetic permeability layer 2 for high frequencies can be fully utilized. There wasn't.
【０００５】一方、異なる誘電率の２つの誘電体層を一
体に積層し、各誘電体層にそれぞれ内部電極を設けて高
周波、低周波用のコンデンサを構成し、各コンデンサを
側面の端子電極で並列に接続したコンデンサ使用の積層
ノイズ対策部品においては、高い周波数帯域において、
高誘電率層を介してコンデンサどうしが結合するため、
この場合にも高周波用のコンデンサの特性を十分に生か
せないという問題点があった。On the other hand, two dielectric layers having different permittivities are integrally laminated, and an internal electrode is provided on each dielectric layer to form a high-frequency and low-frequency capacitor, and each capacitor is formed by a side terminal electrode. In the multilayer noise suppression component using capacitors connected in parallel, in the high frequency band,
Capacitors are coupled through the high dielectric constant layer,
Also in this case, there is a problem that the characteristics of the high frequency capacitor cannot be fully utilized.
【０００６】本発明は、上記した問題点に鑑み、異なる
透磁率を有する複数の磁性体層にそれぞれコイル導体を
内蔵して直列接続した積層ノイズ対策部品、または異な
る誘電率を有する複数の誘電体層にそれぞれ内部電極を
内蔵して並列接続した積層ノイズ対策部品において、そ
れぞれ高周波用、低周波用構成要素（インダクタまたは
コンデンサ）の特性を十分に生かし得るものを提供する
ことを目的とする。In view of the above-mentioned problems, the present invention provides a laminated noise suppression component in which coil conductors are built in a plurality of magnetic layers having different magnetic permeability and connected in series, or a plurality of dielectrics having different permittivities. It is an object of the present invention to provide a laminated noise suppression component in which internal electrodes are built in layers and connected in parallel, each of which can fully utilize the characteristics of a high frequency component and a low frequency component (inductor or capacitor).
【０００７】[0007]
【課題を解決するための手段】この目的を達成するた
め、本発明の積層ノイズ対策部品は、透磁率が異なる磁
性体層の間に、非磁性体よりなる中間層を一体に介在さ
せたことを特徴とする。また、前記中間層に磁束の変化
により短絡電流を流して磁束の通過を減少させるショー
トリングを埋設したことを特徴とする。In order to achieve this object, in the laminated noise suppression component of the present invention, an intermediate layer made of a non-magnetic material is integrally interposed between magnetic material layers having different magnetic permeability. Is characterized by. In addition, a short ring is embedded in the intermediate layer to reduce a passage of the magnetic flux by causing a short circuit current to flow due to the change of the magnetic flux.
【０００８】また、誘電率が異なる複数層の誘電体層に
よりコンデンサを構成するものにおいては、誘電率が異
なる誘電体層の間に前記各誘電体層より低誘電率の中間
層を一体に介在させたことを特徴とする。Further, in a capacitor comprising a plurality of dielectric layers having different dielectric constants, an intermediate layer having a lower dielectric constant than the dielectric layers is integrally interposed between the dielectric layers having different dielectric constants. It is characterized by having done.
【０００９】[0009]
【作用】本発明において、透磁率が異なる磁性体層の間
に非磁性体からなる中間層を一体に介在させたものにお
いては、各磁性体層におけるインダクタの周波数特性が
それぞれ独立し、全体として個々の特性を加えた特性が
得られ、従来より高い周波数帯域に至る広い周波数帯域
におけるノイズ除去が可能となる。中間層にショートリ
ングを設けたものにおいては、中間層における磁束の通
過がさらに良好に防止される。誘電率が異なる複数層の
誘電体層によりコンデンサを構成するものにおいては、
誘電率が異なる誘電体層の間に前記各誘電体層より低誘
電率の中間層を一体に介在させたことにより、異なる誘
電率層間の結合が防止され、それぞれのコンデンサの特
性を加えた合成特性が得られる。In the present invention, in the case where the intermediate layer made of a non-magnetic material is integrally interposed between the magnetic material layers having different magnetic permeability, the frequency characteristics of the inductor in each magnetic material layer are independent of each other, and as a whole. The characteristics obtained by adding the individual characteristics can be obtained, and noise can be removed in a wide frequency band up to a frequency band higher than the conventional one. In the case where the intermediate layer is provided with the short ring, the passage of the magnetic flux in the intermediate layer can be prevented even better. In a capacitor composed of multiple dielectric layers with different dielectric constants,
By interposing an intermediate layer having a lower dielectric constant than each of the dielectric layers between the dielectric layers having different dielectric constants, coupling between layers having different dielectric constants is prevented, and the characteristics of each capacitor are added to the composite. The characteristics are obtained.
【００１０】[0010]
【実施例】図１（Ａ）は本発明による積層ノイズ対策部
品の一実施例を示す斜視図、（Ｂ）は（Ａ）のＥ−Ｅ断
面図である。１、２はそれぞれ相対的に高透磁率、低透
磁率の磁性体層であり、３、４は各磁性体層１、２に内
蔵されたコイル導体であり、これらによりそれぞれ低周
波用インダクタ５と高周波用のインダクタ６を構成す
る。９は磁性体層１、２間に一体に設けた中間層であ
り、該中間層９は非磁性体からなる。１０は各コイル導
体３、４を積層体の内部において接続する導体である。
７、８は一連に接続されたコイル導体３、４の両端に接
続されるように、積層体の側面に設けられた端子電極で
ある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1A is a perspective view showing an embodiment of a laminated noise suppression component according to the present invention, and FIG. 1B is a sectional view taken along line EE of FIG. Reference numerals 1 and 2 are magnetic layers having relatively high magnetic permeability and low magnetic permeability, and 3 and 4 are coil conductors incorporated in the magnetic layers 1 and 2, respectively. And an inductor 6 for high frequency. An intermediate layer 9 is integrally provided between the magnetic layers 1 and 2, and the intermediate layer 9 is made of a non-magnetic material. Reference numeral 10 is a conductor that connects the coil conductors 3 and 4 inside the laminated body.
Reference numerals 7 and 8 denote terminal electrodes provided on the side surfaces of the laminated body so as to be connected to both ends of the coil conductors 3 and 4 connected in series.
【００１１】該インダクタ５や中間層９からなる積層体
は、印刷法あるいはシート法による積層、乾燥工程後、
各チップ毎に切断して焼成するか、あるいは焼成後に切
断することにより製造され、その後、その積層体の側面
に端子電極７、８を焼き付けやメッキにより形成する。The laminated body composed of the inductor 5 and the intermediate layer 9 is laminated by a printing method or a sheet method and dried,
It is manufactured by cutting and firing each chip, or cutting after firing, and thereafter, the terminal electrodes 7 and 8 are formed on the side surfaces of the laminated body by baking or plating.
【００１２】前記磁性体層１、２として、例えばニッケ
ル−銅−亜鉛系のフェライトを用いた場合には、低周波
用（高透磁率）磁性体層１として亜鉛リッチでかつ透磁
率を例えば２００〜１０００に設定したものを用い、高
周波用（低透磁率）磁性体層２としてニッケルリッチで
かつ透磁率を例えば１０〜１００に設定したものを用い
る。また、中間層９としては、非磁性フェライトを用い
る。When, for example, nickel-copper-zinc based ferrite is used as the magnetic layers 1 and 2, the low-frequency (high magnetic permeability) magnetic layer 1 is zinc-rich and has a magnetic permeability of, for example, 200. .About.1000 is used, and as the high frequency (low magnetic permeability) magnetic layer 2, a layer rich in nickel and having a magnetic permeability of, for example, 10 to 100 is used. Further, as the intermediate layer 9, nonmagnetic ferrite is used.
【００１３】図２（Ａ）の上段は高透磁率層１および低
透磁率層２の周波数に対する透磁率の変化を示し、下段
はそれぞれインダクタ５、６の周波数に対するインピー
ダンス変化と全体のインピーダンスの変化を示す。The upper part of FIG. 2 (A) shows the change in the magnetic permeability of the high magnetic permeability layer 1 and the low magnetic permeability layer 2 with respect to the frequency, and the lower part of the figure shows the impedance change with respect to the frequencies of the inductors 5 and 6 and the change of the overall impedance, respectively. Indicates.
【００１４】図１（Ｂ）には、この積層ノイズ対策部品
における各層１、２における磁束φ1、φ2の流れを示し
ており、本実施例においては、高透磁率層１と低透磁率
層２との間に非磁性体でなる中間層９を設けたため、双
方の層１、２にまたがる磁束の通過は減少し、それぞれ
の層１、２において磁束の流れがほとんど個別に生じた
状態とすることができる。この積層ノイズ対策部品にお
ける磁気回路は、図２（Ｂ）に示すように表現され、起
磁力Ｖmに対してそれぞれ高透磁率、低透磁率の各層
１、２ごとに独立した磁気抵抗Ｒm1、Ｒm2が接続された
ものとなる。また、等価電気回路は、図２（Ｃ）に示す
ように、高透磁率層１でなるコアでなるインダクタ５
と、低透磁率層２でなるインダクタ６とが直列に接続さ
れたものとして表現できる。図２（Ｃ）から理解される
ように、本実施例においては、合成インピーダンス特性
は、インダクタ５、６のインピーダンスを加えたものと
なる。すなわち、図２（Ａ）の下段に示すように、両イ
ンダクタ５、６を加えた特性となり、周波数ｆ1を超え
た高周波帯域においてもノイズ除去効果が得られ、広い
周波数範囲についてノイズ除去効果が得られる。FIG. 1B shows the flow of the magnetic fluxes φ 1 and φ 2 in each of the layers 1 and 2 of this laminated noise suppression component. In this embodiment, the high magnetic permeability layer 1 and the low magnetic permeability are shown. Since the intermediate layer 9 made of a non-magnetic material is provided between the layer 2 and the layer 2, the passage of the magnetic flux across the layers 1 and 2 is reduced, and the magnetic flux flows in the layers 1 and 2 almost individually. Can be The magnetic circuit in this laminated noise suppression component is expressed as shown in FIG. 2B, and the magnetic resistance R m1 is independent for each of the layers 1 and 2 having high magnetic permeability and low magnetic permeability with respect to the magnetomotive force V m . , R m2 are connected. In addition, as shown in FIG. 2C, the equivalent electric circuit has an inductor 5 including a core formed of the high magnetic permeability layer 1.
And the inductor 6 formed of the low magnetic permeability layer 2 can be expressed as being connected in series. As will be understood from FIG. 2C, in the present embodiment, the combined impedance characteristic is the sum of the impedances of the inductors 5 and 6. That is, as shown in the lower part of FIG. 2 (A), the inductors 5 and 6 are added, and the noise removal effect is obtained even in a high frequency band exceeding the frequency f 1 , and the noise removal effect is obtained over a wide frequency range. can get.
【００１５】具体例について説明すると、積層ノイズ対
策部品の寸法を縦３．２ｍｍ、横１．６ｍｍ、高さ１．
６ｍｍとし、高透磁率層１にFe2O3…４９、NiO…７、Cu
O…１３、ZnO…３１なる組成（原子％）のフェライトを
用い、低透磁率層２にFe2O3…４９、NiO…２４、CuO…
１０、ZnO…１７なる組成（原子％）のフェライトを用
い、中間層９にFe2O3…４９、CuO…１２、ZnO…３９な
る組成（原子％）の非磁性フェライトを用い、コイル導
体３、４にAgを用い、コイルピッチＰを５０μｍ、コイ
ル導体３のターン数を５Ts、コイル導体４のターン数を
１０Tsとし、中間層９の厚みｔ1を１００μｍ、中間層
９とコイル導体３、４間の間隔ｔ2を２５０μｍとした
ものにおいて、周波数に対するインピーダンスの変化を
測定した結果を、それぞれインダクタ５、６を個別に構
成して測定した結果と対比して図３に示す。図３から分
かるように、本実施例によれば、積層ノイズ対策部品全
体としてのインピーダンスは、インダクタ５、６の特性
を加えたものとなる。また、従来例の構成すなわち中間
層９のないものにおいて、１０ｄＢ程度の減衰が得られ
る周波数範囲は１５〜２００MHzであったが、本発明に
よる中間層９を設けたものにおいては、１０〜４００MH
zとなった。Explaining a specific example, the dimensions of the laminated noise suppression component are 3.2 mm in length, 1.6 mm in width, and 1.
6 mm, and the high magnetic permeability layer 1 has Fe 2 O 3 ... 49, NiO ... 7, Cu
Ferrite having a composition (atomic%) of O ... 13, ZnO ... 31 is used for the low magnetic permeability layer 2, Fe 2 O 3 ... 49, NiO ... 24, CuO ...
49, a non-magnetic ferrite having a composition (atomic%) of Fe 2 O 3 ... 49, CuO ... 12, ZnO ... 39 is used for the intermediate layer 9. 4, Ag is used, the coil pitch P is 50 μm, the number of turns of the coil conductor 3 is 5 Ts, the number of turns of the coil conductor 4 is 10 Ts, the thickness t 1 of the intermediate layer 9 is 100 μm, the intermediate layer 9 and the coil conductor 3, FIG. 3 shows the result of measuring the change in impedance with respect to frequency when the distance t 2 between the four is 250 μm, in comparison with the result obtained by individually configuring the inductors 5 and 6. As can be seen from FIG. 3, according to the present embodiment, the impedance of the laminated noise suppression component as a whole is the sum of the characteristics of the inductors 5 and 6. Further, in the structure of the conventional example, that is, without the intermediate layer 9, the frequency range in which the attenuation of about 10 dB is obtained is from 15 to 200 MHz, but with the intermediate layer 9 according to the present invention, the frequency range is from 10 to 400 MHz.
became z.
【００１６】図４（Ａ）は本発明の他の実施例を示す縦
断面図、（Ｂ）はそのＦ−Ｆ断面図であり、本実施例
は、前記中間層９に、磁束の変化により短絡電流を流し
て磁束の通過を減少させるショートリング１１を埋設し
たものである。本実施例においては、中間層における磁
束の通過がさらに良好に防止されるため、各インダクタ
５、６の特性は前記実施例よりもさらに独立したものと
なり、より特性の良好なものが得られる。FIG. 4A is a vertical sectional view showing another embodiment of the present invention, and FIG. 4B is a sectional view taken along the line FF of this embodiment. In this embodiment, the intermediate layer 9 is changed by the change of magnetic flux. The short ring 11 is embedded to reduce the passage of magnetic flux by passing a short circuit current. In this embodiment, since the passage of the magnetic flux in the intermediate layer is prevented even better, the characteristics of the inductors 5 and 6 are more independent than those of the above embodiments, and the characteristics are better.
【００１７】図５（Ａ）は本発明の他の実施例であり、
相対的に高い誘電率の誘電体層１２と低い誘電率の誘電
体層１３とを積層し、各誘電体層１２、１３にそれぞれ
対向する内部電極１４ａ、１４ｂと１５ａ、１５ｂとを
埋設してそれぞれ容量の異なるコンデンサ１６、１７を
構成すると共に、各コンデンサ１６、１７を端子電極１
８、１９により並列に接続してなり、誘電率が異なる誘
電体層１２、１３の間に前記各誘電体層より低誘電率の
中間層２０を一体に介在させたものである。FIG. 5A shows another embodiment of the present invention,
A dielectric layer 12 having a relatively high dielectric constant and a dielectric layer 13 having a low dielectric constant are laminated, and internal electrodes 14a, 14b and 15a, 15b facing each dielectric layer 12 and 13 are buried. The capacitors 16 and 17 having different capacities are formed, and the capacitors 16 and 17 are connected to the terminal electrode 1 respectively.
8 and 19 are connected in parallel, and an intermediate layer 20 having a lower dielectric constant than the dielectric layers is integrally interposed between dielectric layers 12 and 13 having different dielectric constants.
【００１８】本実施例によれば、主として高い誘電率の
誘電体層１２を介してのコンデンサ１６、１７間の結合
が防止されるので、図５（Ｂ）に示すように、全体とし
て各コンデンサ１６、１７の特性を加えた減衰特性が得
られる。なお、図５（Ｂ）において、コンデンサ１６、
１７の特性曲線が山状のピークをなす理由は、コンデン
サ容量とコンデンサ内部電極パターンのインダクタンス
成分の共振（直列共振）するためである。According to this embodiment, since the coupling between the capacitors 16 and 17 mainly through the dielectric layer 12 having a high dielectric constant is prevented, as shown in FIG. An attenuation characteristic in which the characteristics of 16 and 17 are added can be obtained. In FIG. 5B, the capacitor 16,
The reason why the characteristic curve 17 has a peak shape is that the capacitor capacitance and the inductance component of the capacitor internal electrode pattern resonate (series resonance).
【００１９】本発明においては、１つのチップ内に３層
以上のインダクタあるいはコンデンサを積層したもの、
もしくは同一層に複数個のインダクタやコンデンサを配
設したもの等にも適用できる。In the present invention, one chip is formed by laminating three or more layers of inductors or capacitors,
Alternatively, it can be applied to a plurality of inductors and capacitors arranged in the same layer.
【００２０】[0020]
【発明の効果】請求項１によれば、透磁率が異なる磁性
体層の間に前記非磁性体でなる中間層を一体に介在させ
たので、各層において構成されたインダクタの特性を加
えた特性のものが得られ、１個の積層体だけで、高い周
波数帯域に至る広い帯域にわたり、ノイズ除去効果が得
られる。According to the first aspect of the present invention, since the intermediate layer made of the non-magnetic material is integrally interposed between the magnetic material layers having different magnetic permeability, the characteristics including the characteristics of the inductor formed in each layer are added. And a noise removal effect can be obtained over a wide band up to a high frequency band with only one laminated body.
【００２１】請求項２によれば、積層体内に複数個のイ
ンダクタを構成した積層ノイズ対策部品において、各磁
性体層間における磁束の通過が防止され、各インダクタ
の個別化がより促進され、より良好なノイズ除去効果が
得られる。According to the second aspect of the present invention, in the laminated noise suppression component having a plurality of inductors in the laminated body, the passage of magnetic flux between the magnetic layers is prevented, the individualization of each inductor is further promoted, and it is better. A good noise removal effect can be obtained.
【００２２】請求項３によれば、誘電率が異なる誘電体
層の間に前記各誘電体層より低誘電率の中間層を一体に
介在させたので、各誘電体層において構成されるコンデ
ンサ間の結合が中間層により防止され、請求項１と同様
に、各層において構成されたコンデンサの特性を加えた
特性のものが得られ、１個の積層体だけで、高い周波数
帯域に至る広い周波数帯域にわたってノイズ除去効果が
得られる。According to the third aspect of the present invention, the intermediate layers having a lower dielectric constant than the dielectric layers are integrally interposed between the dielectric layers having different dielectric constants. Is prevented by the intermediate layer, and a characteristic in which the characteristics of the capacitors formed in the respective layers are added is obtained in the same manner as in claim 1, and a wide frequency band reaching a high frequency band can be obtained with only one laminated body. A noise removing effect can be obtained over the entire range.
【図１】（Ａ）は本発明による積層ノイズ対策部品の一
実施例を示す斜視図、（Ｂ）は（Ａ）のＥ−Ｅ断面図で
ある。FIG. 1A is a perspective view showing an embodiment of a laminated noise suppression component according to the present invention, and FIG. 1B is a sectional view taken along line EE of FIG.
【図２】（Ａ）は図１の実施例の部品の周波数特性を示
す図、（Ｂ）は該実施例の等価磁気回路図、（Ｃ）は該
実施例の等価電気回路図である。2A is a diagram showing frequency characteristics of components of the embodiment of FIG. 1, FIG. 2B is an equivalent magnetic circuit diagram of the embodiment, and FIG. 2C is an equivalent electric circuit diagram of the embodiment.
【図３】本発明の周波数特性の具体例を示す図である。FIG. 3 is a diagram showing a specific example of frequency characteristics of the present invention.
【図４】（Ａ）は本発明の他の実施例の構成を示す縦断
面図、（Ｂ）は（Ａ）のＦ−Ｆ断面図である。FIG. 4A is a vertical cross-sectional view showing the configuration of another embodiment of the present invention, and FIG. 4B is a cross-sectional view taken along line FF of FIG.
【図５】（Ａ）は本発明によ積層ノイズ対策部品の他の
実施例を示す断面図、（Ｂ）はその周波数特性図であ
る。5A is a cross-sectional view showing another embodiment of the laminated noise suppression component according to the present invention, and FIG. 5B is a frequency characteristic diagram thereof.
【図６】（Ａ）は従来の積層ノイズ対策部品の一例を示
す斜視図、（Ｂ）は（Ａ）のＧ−Ｇ断面図である。FIG. 6A is a perspective view showing an example of a conventional laminated noise suppression component, and FIG. 6B is a sectional view taken along line GG of FIG.
【図７】（Ａ）は従来の積層ノイズ対策部品の周波数特
性を示す図、（Ｂ）は該従来部品の等価磁気回路図、
（Ｃ）、（Ｄ）はそれぞれ該従来部品における低周波帯
域、高周波帯域における等価電気回路図である。FIG. 7A is a diagram showing frequency characteristics of a conventional laminated noise suppression component, FIG. 7B is an equivalent magnetic circuit diagram of the conventional component,
(C) and (D) are equivalent electric circuit diagrams in the low frequency band and the high frequency band of the conventional component, respectively.
１：高透磁率磁性体層、２：低透磁率磁性体層、３、
４：コイル導体、５：低周波用インダクタ、６：高周波
用インダクタ、７、８：端子電極、９：中間層、１０：
接続用導体、１１：ショートリング、１２：高誘電率誘
電体層、１３：低誘電率誘電体層、１４ａ、１４ｂ、１
５ａ、１５ｂ：内部電極、１６、１７：コンデンサ、１
８、１９：端子電極、２０：中間層1: high magnetic permeability magnetic layer, 2: low magnetic permeability magnetic layer, 3,
4: coil conductor, 5: low frequency inductor, 6: high frequency inductor, 7, 8: terminal electrode, 9: intermediate layer, 10:
Connection conductor, 11: short ring, 12: high dielectric constant dielectric layer, 13: low dielectric constant dielectric layer, 14a, 14b, 1
5a, 15b: internal electrodes, 16, 17: capacitors, 1
8, 19: Terminal electrode, 20: Intermediate layer
Claims (3)
各磁性体層にそれぞれコイル導体を内蔵すると共に、各
磁性体層に内蔵したコイル導体を直列に接続してなる積
層ノイズ対策部品において、 透磁率が異なる磁性体層の間に非磁性体でなる中間層を
一体に介在させたことを特徴とする積層ノイズ対策部
品。1. A plurality of magnetic layers having different magnetic permeability are laminated,
In a laminated noise suppression component in which coil conductors are built in each magnetic layer and the coil conductors built in each magnetic layer are connected in series, a non-magnetic material is used between magnetic layers with different magnetic permeability. A laminated noise suppression component characterized by having an intermediate layer integrally interposed.
化により短絡電流を流すショートリングを埋設したこと
を特徴とする積層ノイズ対策部品。2. The laminated noise countermeasure component according to claim 1, wherein a short ring for flowing a short circuit current due to a change in magnetic flux is buried in the intermediate layer.
各誘電体にそれぞれ対向する内部電極を埋設してそれぞ
れ容量の異なるコンデンサを構成すると共に、各コンデ
ンサを並列に接続してなる積層ノイズ対策部品におい
て、 誘電率が異なる誘電体層の間に前記各誘電体層より低誘
電率の中間層を一体に介在させたことを特徴とする積層
ノイズ対策部品。3. Laminating a plurality of dielectric layers having different dielectric constants,
In a laminated noise suppression component that is formed by embedding internal electrodes facing each dielectric in each capacitor and having different capacities, and connecting each capacitor in parallel, A laminated noise suppression component characterized in that an intermediate layer having a lower dielectric constant than the dielectric layer is integrally interposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17281695A JP3549286B2 (en) | 1995-06-15 | 1995-06-15 | Multilayer noise suppression components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17281695A JP3549286B2 (en) | 1995-06-15 | 1995-06-15 | Multilayer noise suppression components |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH097835A true JPH097835A (en) | 1997-01-10 |
| JP3549286B2 JP3549286B2 (en) | 2004-08-04 |
Family
ID=15948909
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17281695A Expired - Fee Related JP3549286B2 (en) | 1995-06-15 | 1995-06-15 | Multilayer noise suppression components |
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| Country | Link |
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