JP3163968B2 - Multilayer resonator - Google Patents
Multilayer resonatorInfo
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- JP3163968B2 JP3163968B2 JP30183295A JP30183295A JP3163968B2 JP 3163968 B2 JP3163968 B2 JP 3163968B2 JP 30183295 A JP30183295 A JP 30183295A JP 30183295 A JP30183295 A JP 30183295A JP 3163968 B2 JP3163968 B2 JP 3163968B2
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- resonator
- internal
- external
- electrodes
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Description
【０００１】[0001]
【発明の属する技術分野】本発明は、共振器、特に携帯
電話等に使用される積層型共振器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resonator, and more particularly to a multilayer resonator used for a portable telephone or the like.
【０００２】[0002]
【従来の技術】従来、この種の共振器としては、図１６
に示すように、裏面全面に導体９３を設け、かつ表面に
ストリップ導体９４を設けた誘電体基板９２と、表面全
面に導体９３を設けた誘電体基板９２とをストリップ導
体９４を間に挟むようにして接合し、積層構造としたも
のが知られている。このストリップ導体９４の長さを
Ｌ、共振器の中心波長をλ、誘電体基板９２の比誘電率
をεとすると、以下の（１）式が成立する。2. Description of the Related Art Conventionally, as a resonator of this type, FIG.
As shown in the figure, a dielectric substrate 92 provided with a conductor 93 on the entire back surface and a strip conductor 94 on the front surface and a dielectric substrate 92 provided with the conductor 93 on the entire front surface are sandwiched by the strip conductor 94. It is known that they are joined to form a laminated structure. Assuming that the length of the strip conductor 94 is L, the center wavelength of the resonator is λ, and the relative permittivity of the dielectric substrate 92 is ε, the following equation (1) is established.
【０００３】 Ｌ＝（λ／４）×（１／ε）1/2 ……（１）L = (λ / 4) × (1 / ε) 1/2 (1)
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
共振器にあっては、ストリップ導体９４が前記（１）式
の関係を満足する長さＬを必要とするので、共振器のサ
イズを小さくすることが困難であった。また、ストリッ
プ導体９４等の寸法精度も厳しく、製造し難いという問
題があった。However, in the conventional resonator, the strip conductor 94 needs a length L that satisfies the relationship of the above equation (1), so that the size of the resonator is reduced. It was difficult. In addition, there is a problem that the dimensional accuracy of the strip conductor 94 and the like is strict and difficult to manufacture.
【０００５】そこで、本発明の目的は、小型化が容易
で、かつ製造し易い積層型共振器を提供することにあ
る。SUMMARY OF THE INVENTION An object of the present invention is to provide a laminated resonator which can be easily reduced in size and easily manufactured.
【０００６】[0006]
【課題を解決するための手段】以上の目的を達成するた
め、本発明に係る積層型共振器は、（ａ）対向配置され
る少なくとも一対の内部電極と、（ｂ）前記内部電極の
いずれか一方の電極に電気結合した引出し電極と、
（ｃ）前記内部電極及び前記引出し電極と共に積層体を
構成した絶縁体と、（ｄ）前記積層体の表面に設けられ
た、前記内部電極の一方の電極に接続した第１の外部電
極と、（ｅ）前記積層体の表面に設けられた、前記内部
電極の他方の電極に接続した第２の外部電極と、（ｆ）
前記積層体の表面に設けられた、前記引出し電極に接続
した第３の外部電極と、を備えたことを特徴とする。In order to achieve the above object, a laminated resonator according to the present invention comprises: (a) at least a pair of internal electrodes arranged to face each other; and (b) one of the internal electrodes. An extraction electrode electrically coupled to one of the electrodes,
(C) an insulator that forms a laminate with the internal electrode and the extraction electrode, and (d) a first external electrode provided on the surface of the laminate and connected to one of the internal electrodes. (E) a second external electrode provided on the surface of the laminate and connected to the other of the internal electrodes; and (f)
A third external electrode provided on the surface of the laminate and connected to the extraction electrode.
【０００７】また、本発明に係る積層型共振器は、第３
の外部電極を入出力用外部電極として使用し、第１の外
部電極又は第２の外部電極の少なくともいずれか一方の
外部電極をグランド用外部電極として使用する。また、
本発明に係る積層型共振器は、内部電極と引出し電極と
の電気結合が、容量性結合又は誘導性結合又は直接結合
の少なくともいずれか一つの結合である。特に、容量性
結合の場合には、引出し電極の配設位置が内部電極の間
又は外側のいずれであってもよい。Further, the laminated resonator according to the present invention has a third structure.
Are used as input / output external electrodes, and at least one of the first external electrode and the second external electrode is used as a ground external electrode. Also,
In the multilayer resonator according to the present invention, the electrical coupling between the internal electrode and the extraction electrode is at least one of capacitive coupling, inductive coupling, and direct coupling. In particular, in the case of capacitive coupling, the arrangement position of the extraction electrode may be either between the internal electrodes or outside.
【０００８】さらに、本発明に係る積層型共振器は、積
層体の上下表面部の少なくとも一方にシールド電極が設
けられている。このシールド電極は、第１の外部電極又
は第２の外部電極の少なくともいずれか一方の外部電極
に接続している場合と、いずれの電極にも接続していな
い場合がある。そして、シールド電極と内部電極との間
隔は３００μｍ以上であることが好ましい。Further, in the multilayer resonator according to the present invention, a shield electrode is provided on at least one of the upper and lower surfaces of the multilayer body. The shield electrode may be connected to at least one of the first external electrode and the second external electrode, or may not be connected to any of the electrodes. The distance between the shield electrode and the internal electrode is preferably at least 300 μm.
【０００９】[0009]
【作用】以上の構成により、内部電極間に発生するキャ
パシタンスを主要因とし、内部電極自身が有するインダ
クタンス等が組み合わされて、分布定数共振器が形成さ
れる。With the above arrangement, a distributed constant resonator is formed by combining the inductance and the like of the internal electrodes with the capacitance generated between the internal electrodes as a main factor.
【００１０】[0010]
【発明の実施の形態】以下、本発明に係る積層型共振器
の実施形態について添付図面を参照して説明する。各実
施形態において、同一部品及び同一部分には同じ符号を
付した。 ［第１実施形態、図１〜図３］図１に示すように、積層
型共振器１は、内部電極４，５をそれぞれ表面に設けた
誘電体シート２と、引出し電極６を表面に設けた誘電体
シート２と、シールド電極３を表面に設けた誘電体シー
ト２と、表面に何も設けない誘電体シート２からなる。
誘電体シート２は、セラミック粉末と結合剤等を混練し
たものをシート状にしたものである。各電極３〜６は、
Ａｇ，Ｃｕ，Ａｕ，Ａｇ−Ｐｄ等からなり、印刷、スパ
ッタリングあるいは蒸着等の手段により形成される。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a laminated resonator according to an embodiment of the present invention. In each embodiment, the same components and the same portions are denoted by the same reference numerals. [First Embodiment, FIGS. 1 to 3] As shown in FIG. 1, a multilayer resonator 1 has a dielectric sheet 2 having internal electrodes 4 and 5 provided on its surface, and a lead electrode 6 provided on its surface. And a dielectric sheet 2 provided with a shield electrode 3 on its surface, and a dielectric sheet 2 provided with nothing on its surface.
The dielectric sheet 2 is a sheet obtained by kneading a ceramic powder and a binder and the like. Each of the electrodes 3 to 6
It is made of Ag, Cu, Au, Ag-Pd or the like, and is formed by means such as printing, sputtering or vapor deposition.
【００１１】内部電極４は矩形状であり、その一端部４
ａはシート２の手前側の辺に露出し、他端部４ｂは解放
端とされている。内部電極４と対の関係にある内部電極
５は矩形状であり、内部電極４に対向している。この内
部電極５もその一端部５ａがシート２の奥側の辺に露出
し、他端部５ｂが解放端とされている。限定されるもの
ではないが、内部電極４の幅は内部電極５の幅より若干
広く設計されている。シート２を積層した際に積層ずれ
が生じても、内部電極４，５間の対向面積がばらつかな
いようにして一定の共振周波数の共振器を安定して製造
するためである。なお、内部電極４，５の形状は矩形状
に限るものではなく、例えば円形状、三角形状、多角形
状等任意である。The internal electrode 4 has a rectangular shape.
a is exposed to the front side of the sheet 2 and the other end 4b is an open end. The internal electrode 5 paired with the internal electrode 4 is rectangular and faces the internal electrode 4. One end 5a of the internal electrode 5 is also exposed to the back side of the sheet 2, and the other end 5b is an open end. Although not limited, the width of the internal electrode 4 is designed to be slightly wider than the width of the internal electrode 5. This is to stably manufacture a resonator having a constant resonance frequency by keeping the opposing areas between the internal electrodes 4 and 5 from being varied even if lamination misalignment occurs when the sheets 2 are laminated. The shape of the internal electrodes 4 and 5 is not limited to a rectangular shape, but may be any shape such as a circular shape, a triangular shape, and a polygonal shape.
【００１２】引出し電極６は一端部６ａがシート２の左
辺に露出し、他端部６ｂは幅を広くして広面積とされて
いる。この他端部６ｂは、積層された状態では、内部電
極５と容量性結合をする。ただし、引出し電極は必ずし
も端部６ｂを広面積とする必要はなく、幅が一定の帯状
の引出し電極であってもよい。また、引出し電極は必ず
しも内部電極５に近接して配置する必要はなく、内部電
極４に近接して配置してもよいし、内部電極４と５の間
に設けてもよい。One end 6a of the extraction electrode 6 is exposed on the left side of the sheet 2, and the other end 6b is wide and wide. The other end 6b is capacitively coupled to the internal electrode 5 in a stacked state. However, the extraction electrode does not necessarily have to have a large area at the end 6b, and may be a strip-shaped extraction electrode having a constant width. Further, the extraction electrode does not necessarily need to be arranged close to the internal electrode 5, and may be arranged close to the internal electrode 4, or may be arranged between the internal electrodes 4 and 5.
【００１３】シールド電極３は、シート２の略表面全面
に形成されており、一端部３ａはシート２の手前側の辺
に露出し、他端部３ｂは奥側の辺に露出している。シー
ト２の外周縁部にシールド電極３を形成しない部分３
ｃ，３ｄを設定することにより、層間の接合強度をアッ
プさせている。シールド電極３とシート２は材質が異な
るため接合力が弱く、シールド電極３をシート２の表面
全面に形成すると剥れ等の不具合が発生し易くなるから
である。従って、剥がれ等の心配がない場合には、シー
ルド電極３をシート２の表面全面に形成してもよい。The shield electrode 3 is formed on substantially the entire surface of the sheet 2. One end 3a is exposed on the near side of the sheet 2, and the other end 3b is exposed on the back side. Portion 3 where shield electrode 3 is not formed on the outer peripheral edge of sheet 2
By setting c and 3d, the bonding strength between the layers is increased. This is because the shield electrode 3 and the sheet 2 are made of different materials, so that the bonding strength is weak, and if the shield electrode 3 is formed on the entire surface of the sheet 2, problems such as peeling are likely to occur. Therefore, when there is no fear of peeling or the like, the shield electrode 3 may be formed on the entire surface of the sheet 2.
【００１４】以上の構成からなる各シート２は積み重ね
られた後、一体的に焼結されて積層体とされる。次に、
図２に示すように、得られた積層体の手前側及び奥側の
側面にそれぞれグランド用外部電極７，８が形成され、
左側面に入出力用外部電極９が形成される。外部電極７
〜９は、塗布焼付、スパッタリングあるいは蒸着等の手
段により形成される。グランド用外部電極７には内部電
極４の端部４ａ及びシールド電極３の端部３ａが接続さ
れ、グランド用外部電極８には内部電極５の端部５ａ及
びシールド電極３の端部３ｂが接続され、入出力用外部
電極９には引出し電極６の端部６ａが接続されている。
図３に示すように、シールド電極３と内部電極４，５と
の間隔ｄは３００μｍ以上に設定するのが好ましく、４
００μｍ以上、６００μｍ以上、さらには８００μｍ以
上に設定することが好ましい。なぜなら、間隔ｄが小さ
いと、シールド電極３に渦電流損が発生して共振器内の
磁界が減衰させられ、共振器のＱが劣化するからであ
る。Each of the sheets 2 having the above-described configuration is stacked and then integrally sintered to form a laminate. next,
As shown in FIG. 2, ground external electrodes 7 and 8 are formed on the front and rear side surfaces of the obtained laminate, respectively.
An input / output external electrode 9 is formed on the left side surface. External electrode 7
9 are formed by means such as coating and baking, sputtering or vapor deposition. The end 4a of the internal electrode 4 and the end 3a of the shield electrode 3 are connected to the ground external electrode 7, and the end 5a of the internal electrode 5 and the end 3b of the shield electrode 3 are connected to the ground external electrode 8. The end 6 a of the extraction electrode 6 is connected to the input / output external electrode 9.
As shown in FIG. 3, the distance d between the shield electrode 3 and the internal electrodes 4 and 5 is preferably set to 300 μm or more.
The thickness is preferably set to be at least 00 μm, at least 600 μm, and more preferably at least 800 μm. This is because, if the distance d is small, eddy current loss occurs in the shield electrode 3 and the magnetic field in the resonator is attenuated, so that the Q of the resonator deteriorates.
【００１５】こうして得られた積層型共振器１におい
て、内部電極４，５間に発生するキャパシタンスと内部
電極４，５自身が有するインダクタンス等が組み合わさ
れて分布定数共振器を形成する。つまり、キャパシタン
スを主要因とする分布定数型の共振器とし、従来のよう
なストリップ導体を用いていないので、中心波長λを何
ら考慮する必要がなく、共振器１のサイズを可及的に小
さくできる。従って、小型で、かつＱが高い共振器が得
られる。具体的数値で示すと、従来の共振器のＱが８０
であるのに対して、第１実施形態の共振器１のＱは１０
０であった。In the multilayer resonator 1 thus obtained, the distributed constant resonator is formed by combining the capacitance generated between the internal electrodes 4 and 5 and the inductance of the internal electrodes 4 and 5 themselves. That is, since the resonator is a distributed-constant-type resonator whose main factor is capacitance and does not use a conventional strip conductor, there is no need to consider the center wavelength λ at all, and the size of the resonator 1 is made as small as possible. it can. Therefore, a resonator having a small size and a high Q can be obtained. Specifically, when the Q of the conventional resonator is 80,
In contrast, Q of the resonator 1 of the first embodiment is 10
It was 0.
【００１６】さらに、内部電極４，５等の寸法精度が比
較的緩く、しかも従来の積層型コンデンサの製造方法を
利用することができるので、製造が容易である。Further, since the dimensional accuracy of the internal electrodes 4 and 5 is relatively low and the conventional manufacturing method of the multilayer capacitor can be used, the manufacturing is easy.
【００１７】［第２実施形態、図４及び図５］図４に示
すように、積層型共振器２１は、引出し電極２２を残し
て前記第１実施形態の共振器１と同様の構造をしてい
る。引出し電極２２は略Ｔ字形状をしており、一端部２
２ａが誘電体シート２の左辺に露出し、他端部２２ｂは
シート２の奥側の辺に露出している。この他端部２２ｂ
は、積層された状態では内部電極５と誘導性結合をす
る。[Second Embodiment, FIGS. 4 and 5] As shown in FIG. 4, a multilayer resonator 21 has the same structure as the resonator 1 of the first embodiment except for an extraction electrode 22. ing. The extraction electrode 22 has a substantially T-shape.
2a is exposed on the left side of the dielectric sheet 2, and the other end 22b is exposed on the far side of the sheet 2. This other end 22b
Form an inductive coupling with the internal electrode 5 in a stacked state.
【００１８】図５に示すように、端部２２ａは入出力用
外部電極９に接続され、端部２２ｂはグランド外部電極
８に接続されている。なお、引出し電極は必ずしもＴ字
形状とする必要はなく、Ｌ字形状であってもよい。ま
た、引出し電極は必ずしも内部電極５に近接して配置す
る必要はなく、内部電極４に近接して配置してもよい
し、内部電極４と５の間に設けてもよい。以上の構成か
らなる積層型共振器２１は前記第１実施形態の共振器１
と同様の作用効果を奏する。As shown in FIG. 5, the end 22a is connected to the input / output external electrode 9, and the end 22b is connected to the ground external electrode 8. The extraction electrode does not necessarily have to be T-shaped, but may be L-shaped. Further, the extraction electrode does not necessarily need to be arranged close to the internal electrode 5, and may be arranged close to the internal electrode 4, or may be arranged between the internal electrodes 4 and 5. The multilayer resonator 21 having the above configuration is the same as the resonator 1 of the first embodiment.
The same operation and effect as described above can be obtained.
【００１９】［第３実施形態、図６及び図７］図６及び
図７に示すように、積層型共振器３１は、引出し電極３
２を残して前記第１実施形態の共振器１と同様の構造を
している。引出し電極３２は内部電極５が形成されてい
る誘電体シート２に形成されている。引出し電極３２は
幅が一定の帯状をしており、一端部３２ａが誘電体シー
ト２の左辺に露出し、他端部３２ｂは内部電極５と略Ｔ
字形状をなすように接続している。従って、引出し電極
３２は内部電極５と直接結合している。そして、端部３
２ａは入出力用外部電極９に接続されている。なお、引
出し電極は必ずしも内部電極５に接続する必要はなく、
内部電極４に接続してもよい。以上の構成からなる積層
型共振器３１は前記第１実施形態の共振器１と同様の作
用効果を奏する。[Third Embodiment, FIGS. 6 and 7] As shown in FIGS. 6 and 7, the multilayer resonator 31 is provided with an extraction electrode 3.
The structure is the same as that of the resonator 1 of the first embodiment except for 2. The extraction electrode 32 is formed on the dielectric sheet 2 on which the internal electrode 5 is formed. The extraction electrode 32 has a band shape with a constant width. One end 32a is exposed to the left side of the dielectric sheet 2 and the other end 32b is substantially T-shaped with the internal electrode 5.
They are connected in a letter shape. Therefore, the extraction electrode 32 is directly connected to the internal electrode 5. And end 3
2a is connected to the input / output external electrode 9. Note that the extraction electrode does not necessarily need to be connected to the internal electrode 5,
It may be connected to the internal electrode 4. The multilayer resonator 31 having the above configuration has the same function and effect as the resonator 1 of the first embodiment.
【００２０】［第４実施形態及び第５実施形態、図８〜
図１１］図８及び図９に示すように積層型共振器４１
は、前記第１実施形態の共振器１の上側表面部に配設さ
れたシールド電極３を取り除いたものと同様の構造をし
ている。また、図１０及び図１１に示すように積層型共
振器５１は、前記第１実施形態の共振器１のシールド電
極３を全て取り除いたものと同様の構造をしている。こ
れらの共振器４１，５１は前記第１実施形態の共振器１
と同様の作用効果を奏すると共に、シールド電極の数が
少ない分だけ製造工数が省略でき、より安価に製造する
ことができる。[Fourth Embodiment and Fifth Embodiment, FIGS.
FIG. 11] As shown in FIG. 8 and FIG.
Has the same structure as that of the first embodiment except that the shield electrode 3 disposed on the upper surface portion of the resonator 1 is removed. Further, as shown in FIGS. 10 and 11, the multilayer resonator 51 has the same structure as the resonator 1 of the first embodiment except that all the shield electrodes 3 are removed. These resonators 41 and 51 correspond to the resonator 1 of the first embodiment.
In addition to the same operation and effect as described above, the number of manufacturing steps can be reduced because the number of shield electrodes is small, and the manufacturing can be performed at lower cost.
【００２１】なお、共振器４１，５１の場合、プリント
基板等に実装後にシールド用金属ケースを共振器４１，
５１に被せたり、あるいはプリント基板等に形成した広
面積のシールド用グランドパターンに共振器４１，５１
を半田付け等によって実装することにより、共振器４
１，４５をシールドしてもよい。なお、第４、第５実施
形態の趣旨を、第１実施形態以外の他の実施形態に適用
できることは言うまでもない。In the case of the resonators 41 and 51, the metal case for shielding is mounted on the printed circuit board or the like and the metal case for shielding is mounted on the resonators 41 and 51.
The resonators 41 and 51 are placed on a shield ground pattern having a large area formed on a printed circuit board or the like.
Is mounted by soldering or the like, so that the resonator 4
1, 45 may be shielded. Needless to say, the gist of the fourth and fifth embodiments can be applied to other embodiments other than the first embodiment.
【００２２】［第６実施形態及び第７実施形態、図１２
〜図１５］図１２及び図１３に示すように、積層型共振
器６１は、シールド電極６２を残して前記第１実施形態
の共振器１と同様の構造をしている。シールド電極６２
は、誘電体シート２の略表面全面に形成されており、一
端部６２ａはシート２の手前側の辺に露出している。シ
ート２の外周縁部には、シールド電極６２を形成しない
部分６２ｂ，６２ｃを設定することにより、層間の接合
強度をアップさせている。シールド電極６２はグランド
外部電極７のみに接続されている。[Sixth Embodiment and Seventh Embodiment, FIG.
15 to 15] As shown in FIGS. 12 and 13, the multilayer resonator 61 has the same structure as the resonator 1 of the first embodiment except for the shield electrode 62. Shield electrode 62
Is formed on substantially the entire surface of the dielectric sheet 2, and one end portion 62 a is exposed on the near side of the sheet 2. By setting the portions 62b and 62c where the shield electrode 62 is not formed on the outer peripheral portion of the sheet 2, the bonding strength between the layers is increased. The shield electrode 62 is connected only to the ground external electrode 7.
【００２３】また、図１４及び図１５に示すように、積
層型共振器７１はシールド電極７２を残して前記第１実
施形態の共振器１と同様の構造をしている。シールド電
極７２は、誘電体シート２の略表面全面に形成されてお
り、シート２の外周縁部にシールド電極７２を形成しな
い部分７２ａを設定することにより、シート２間の接合
強度をアップさせている。シールド電極７２はいずれの
外部電極にも接続されていない。以上の構成からなる共
振器６１，７１は前記第１実施形態の共振器１と同様の
作用効果を奏すると共に、シート２間の接合強度がより
アップしたものが得られる。As shown in FIGS. 14 and 15, the multilayer resonator 71 has the same structure as the resonator 1 of the first embodiment except for the shield electrode 72. The shield electrode 72 is formed on substantially the entire surface of the dielectric sheet 2, and by setting a portion 72 a where the shield electrode 72 is not formed on the outer peripheral edge of the sheet 2, the bonding strength between the sheets 2 is increased. I have. The shield electrode 72 is not connected to any external electrodes. The resonators 61 and 71 having the above configuration have the same function and effect as the resonator 1 of the first embodiment, and also have a higher joint strength between the sheets 2.
【００２４】これら、第６、第７実施形態の趣旨も、第
１実施形態以外のものに適用できることは言うまでもな
い。It is needless to say that the gist of the sixth and seventh embodiments can be applied to those other than the first embodiment.
【００２５】［他の実施形態］なお、本発明に係る積層
型共振器は前記実施形態に限定するものではなく、その
要旨の範囲内で種々に変更することができる。[Other Embodiments] The multilayer resonator according to the present invention is not limited to the above-described embodiment, but can be variously modified within the scope of the gist.
【００２６】前記実施形態のように、内部電極の数は４
枚に限るものではなく、２枚以上であればその数は任意
である。内部電極の数を増すと、共振器の中心周波数を
低くでき、内部電極の数を調整することによってＭＨｚ
帯からＧＨｚ帯までの共振器をサイズを大きくすること
なく任意に設計することができ、通信機用に限らず、Ｔ
Ｖ機等にも幅広く利用することができる。内部電極相互
の間隔は等しくなくともよく、仕様に合わせて各内部電
極相互の間隔を変えてもよい。As in the above embodiment, the number of internal electrodes is four.
The number is not limited to two, and the number is arbitrary as long as it is two or more. By increasing the number of internal electrodes, the center frequency of the resonator can be lowered, and by adjusting the number of internal electrodes, the
The resonator from the band to the GHz band can be arbitrarily designed without increasing the size.
It can be widely used for V machines and the like. The intervals between the internal electrodes may not be equal, and the intervals between the internal electrodes may be changed according to specifications.
【００２７】また、外部電極は積層体の側面に必ずしも
設ける必要はなく、スルーホール等の電気的接続手段を
利用して積層体の表裏面に形成してもよいことは言うま
でもない。さらに、前記実施形態は、シートを積み重ね
た後、一体的に焼結するものであるが、必ずしもこれに
限定されない。例えば、以下に説明する製法によって積
層型共振器を製作してもよい。印刷等の手段によりペー
スト状の誘電体材料を塗布、乾燥して誘電体膜を形成し
た後、その誘電体膜の表面にペースト状の導電体材料を
塗布、乾燥して電極膜を形成する。こうして順に重ね塗
りすることによって積層構造を有する共振器が得られ
る。また、シート２も必ずしも誘電体やセラミックであ
る必要はなく、樹脂フィルムや他の絶縁体を用いてもよ
く、さらに予め焼結されたセラミックを用いてもよい。Further, it is needless to say that the external electrodes need not always be provided on the side surfaces of the laminate, and may be formed on the front and back surfaces of the laminate using electrical connection means such as through holes. Further, in the above-described embodiment, the sheets are stacked and then integrally sintered, but the present invention is not necessarily limited to this. For example, a stacked resonator may be manufactured by a manufacturing method described below. After a paste-like dielectric material is applied by means of printing or the like and dried to form a dielectric film, a paste-like conductive material is applied to the surface of the dielectric film and dried to form an electrode film. In this manner, a resonator having a laminated structure is obtained by successively coating. Also, the sheet 2 does not necessarily need to be a dielectric or ceramic, but may be a resin film or another insulator, or may be a sintered ceramic.
【００２８】また、内部電極と引出し電極との電気結合
は、例えば容量性結合と誘導性結合を組み合わせたもの
等、容量性結合、誘導性結合及び直接結合を任意に組み
合わせたものであってもよい。The electrical coupling between the internal electrode and the extraction electrode may be any combination of capacitive coupling, inductive coupling and direct coupling, such as a combination of capacitive coupling and inductive coupling. Good.
【００２９】[0029]
【発明の効果】以上の説明で明らかなように、本発明に
よれば、対向配置される少なくとも一対の内部電極と、
この内部電極のいずれか一方の電極に電気結合した引出
し電極とを備えたことにより、内部電極間に発生するキ
ャパシタンスを主要因とし、内部電極自身が有するイン
ダクタンス等が組み合わされて分布定数共振器を形成す
ることができる。そして、ストリップ導体を用いないの
で、共振器のサイズを小さくすることができ、かつ、イ
ンダクタンス成分が小さく、Ｑの高い共振器が得られ
る。さらに、内部電極等の寸法精度が比較的緩く、しか
も従来の積層型コンデンサの製造方法を利用することが
でき、製造が容易である。また、内部電極の数を調整す
るだけで、共振器の中心周波数をコントロールできるの
で、共振器のサイズを大きくすることなく任意の中心周
波数のものを得ることができる。As is apparent from the above description, according to the present invention, at least one pair of internal electrodes which are opposed to each other,
By providing an extraction electrode electrically coupled to any one of the internal electrodes, a capacitance generated between the internal electrodes is a main factor, and an inductance or the like of the internal electrode itself is combined to form a distributed constant resonator. Can be formed. Since the strip conductor is not used, the size of the resonator can be reduced, and a resonator having a small inductance component and a high Q can be obtained. Further, the dimensional accuracy of the internal electrodes and the like is relatively low, and the conventional manufacturing method of the multilayer capacitor can be used, which facilitates the manufacturing. Further, the center frequency of the resonator can be controlled only by adjusting the number of internal electrodes, so that an arbitrary center frequency can be obtained without increasing the size of the resonator.
【図１】本発明に係る積層型共振器の第１実施形態を示
す分解斜視図。FIG. 1 is an exploded perspective view showing a first embodiment of a multilayer resonator according to the present invention.
【図２】図１に示した積層型共振器の外観を示す斜視
図。FIG. 2 is a perspective view showing the appearance of the multilayer resonator shown in FIG.
【図３】図２に示した積層型共振器のIII−III断面図。FIG. 3 is a sectional view taken along line III-III of the multilayer resonator shown in FIG. 2;
【図４】本発明に係る積層型共振器の第２実施形態を示
す分解斜視図。FIG. 4 is an exploded perspective view showing a second embodiment of the multilayer resonator according to the present invention.
【図５】図４に示した積層型共振器の断面図。5 is a sectional view of the multilayer resonator shown in FIG.
【図６】本発明に係る積層型共振器の第３実施形態を示
す分解斜視図。FIG. 6 is an exploded perspective view showing a third embodiment of the multilayer resonator according to the present invention.
【図７】図６に示した積層型共振器の断面図。FIG. 7 is a sectional view of the multilayer resonator shown in FIG. 6;
【図８】本発明に係る積層型共振器の第４実施形態を示
す分解斜視図。FIG. 8 is an exploded perspective view showing a multilayer resonator according to a fourth embodiment of the present invention.
【図９】図８に示した積層型共振器の断面図。FIG. 9 is a sectional view of the multilayer resonator shown in FIG. 8;
【図１０】本発明に係る積層型共振器の第５実施形態を
示す分解斜視図。FIG. 10 is an exploded perspective view showing a fifth embodiment of the multilayer resonator according to the present invention.
【図１１】図１０に示した積層型共振器の断面図。FIG. 11 is a sectional view of the multilayer resonator shown in FIG. 10;
【図１２】本発明に係る積層型共振器の第６実施形態を
示す分解斜視図。FIG. 12 is an exploded perspective view showing a laminated resonator according to a sixth embodiment of the present invention.
【図１３】図１２に示した積層型共振器の断面図。13 is a sectional view of the multilayer resonator shown in FIG.
【図１４】本発明に係る積層型共振器の第７実施形態を
示す分解斜視図。FIG. 14 is an exploded perspective view showing a multilayer resonator according to a seventh embodiment of the present invention.
【図１５】図１４に示した積層型共振器の断面図。FIG. 15 is a cross-sectional view of the multilayer resonator shown in FIG.
【図１６】従来の積層型共振器を示す分解斜視図。FIG. 16 is an exploded perspective view showing a conventional laminated resonator.
１，２１，３１，４１，５１，６１，７１…積層型共振
器 ２…誘電体シート ３，６２，７２…シールド電極 ４，５…内部電極 ６，２２，３２…引出し電極 ７…グランド用外部電極（第１の外部電極） ８…グランド用外部電極（第２の外部電極） ９…入出力用外部電極（第３の外部電極）1, 21, 31, 41, 51, 61, 71: laminated resonator 2: dielectric sheet 3, 62, 72: shield electrode 4, 5: internal electrode 6, 22, 32: extraction electrode 7: external ground Electrode (first external electrode) 8: External electrode for ground (second external electrode) 9: External electrode for input / output (third external electrode)
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H01P 7/00 H01P 7/08 Continuation of the front page (58) Field surveyed (Int.Cl. 7 , DB name) H01P 7/00 H01P 7/08
Claims (6)
極と、 前記内部電極のいずれか一方の電極に、容量性結合又は
誘導性結合のいずれか一つの結合で電気結合した引出し
電極と、 前記内部電極及び前記引出し電極と共に積層体を構成し
た絶縁体と、 前記積層体の表面に設けられた、前記内部電極の一方の
電極に接続した第１のグランド用外部電極と、 前記積層体の表面に設けられた、前記内部電極の他方の
電極に接続した第２のグランド用外部電極と、 前記積層体の表面に設けられた、前記引出し電極に接続
した入出力用外部電極と、前記積層体の上下表面部の少なくとも一方の表面部に設
けられたシールド電極と、 を備えたことを特徴とする積層型共振器。At least one pair of internal electrodes facing each other, and capacitive coupling or
An extraction electrode that is electrically coupled by any one of inductive couplings ; an insulator that forms a laminate with the internal electrode and the extraction electrode; and one of the internal electrodes provided on a surface of the laminate. A first ground external electrode connected to an electrode; a second ground external electrode connected to the other of the internal electrodes provided on the surface of the laminate; and a second ground external electrode provided on the surface of the laminate. Further, an input / output external electrode connected to the extraction electrode and at least one of upper and lower surface portions of the laminate are provided.
And a shielded electrode .
ンド用外部電極又は第２のグランド用外部電極の少なく
ともいずれか一方のグランド用外部電極に接続している
ことを特徴とする請求項１記載の積層型共振器。 2. An end of the extraction electrode is connected to the first graph.
Less external electrodes for grounding or external electrodes for second ground
Connected to one of the ground external electrodes
The multilayer resonator according to claim 1, wherein:
結合が容量性結合であり、前記引出し電極の配設位置が
前記内部電極の間又は外側であることを特徴とする請求
項１又は請求項２記載の積層型共振器。 3. The electric connection between the internal electrode and the extraction electrode.
The coupling is capacitive coupling, and the arrangement position of the extraction electrode is
Claims: between or outside the internal electrodes
3. The laminated resonator according to claim 1 or 2.
用外部電極又は第２のグランド用外部電極の少なくとも
いずれか一方のグランド用外部電極に接続していること
を特徴とする請求項１〜請求項３記載の積層型共振器。 4. The method according to claim 1, wherein the shield electrode is the first ground.
At least one of the first external electrode or the second ground external electrode.
Connected to one of the ground external electrodes
The multilayer resonator according to claim 1, wherein:
も接続されていないことを特徴とする請求項１〜請求項
３記載の積層型共振器。 5. The method according to claim 1, wherein the shield electrode is connected to any external electrode.
Claims 1 to 3 are also not connected
3. The laminated resonator according to 3.
隔が３００μｍ以上であることを特徴とする請求項１〜
請求項５記載の積層型共振器。 6. Between the internal electrode and the shield electrode.
The gap is not less than 300 μm.
The multilayer resonator according to claim 5.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30183295A JP3163968B2 (en) | 1995-11-20 | 1995-11-20 | Multilayer resonator |
| US08/749,893 US5892415A (en) | 1995-11-20 | 1996-11-18 | Laminated resonator and laminated band pass filter using same |
| EP96402493A EP0774797B1 (en) | 1995-11-20 | 1996-11-20 | Laminated resonator and laminated band pass filter using same |
| DE69627785T DE69627785T2 (en) | 1995-11-20 | 1996-11-20 | Laminated resonator and laminated bandpass filter with it |
| CNB961192917A CN1145259C (en) | 1995-11-20 | 1996-11-20 | Laminated resonator and laminated band pass filter using same |
| KR1019960055752A KR100232973B1 (en) | 1995-11-20 | 1996-11-20 | Resonator and band pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30183295A JP3163968B2 (en) | 1995-11-20 | 1995-11-20 | Multilayer resonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09148870A JPH09148870A (en) | 1997-06-06 |
| JP3163968B2 true JP3163968B2 (en) | 2001-05-08 |
Family
ID=17901703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30183295A Expired - Lifetime JP3163968B2 (en) | 1995-11-20 | 1995-11-20 | Multilayer resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3163968B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1698033A4 (en) * | 2003-12-22 | 2010-07-21 | X2Y Attenuators Llc | Internally shielded energy conditioner |
| JP4195036B2 (en) | 2006-01-26 | 2008-12-10 | Ｔｄｋ株式会社 | Multilayer resonator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6033723A (en) * | 1983-08-04 | 1985-02-21 | Matsushita Electric Ind Co Ltd | Tuner |
| JP2830638B2 (en) * | 1992-07-27 | 1998-12-02 | 株式会社村田製作所 | Resonator |
| JPH06224606A (en) * | 1993-01-23 | 1994-08-12 | Tdk Corp | Resonance frequency adjustment method for laminated resonator |
| JPH0856103A (en) * | 1994-08-10 | 1996-02-27 | Taiyo Yuden Co Ltd | Laminated resonator |
| JP3067612B2 (en) * | 1995-11-20 | 2000-07-17 | 株式会社村田製作所 | Stacked bandpass filter |
-
1995
- 1995-11-20 JP JP30183295A patent/JP3163968B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09148870A (en) | 1997-06-06 |
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