JPH0766607A - Production of dielectric coaxial resonator - Google Patents
Production of dielectric coaxial resonatorInfo
- Publication number
- JPH0766607A JPH0766607A JP21051693A JP21051693A JPH0766607A JP H0766607 A JPH0766607 A JP H0766607A JP 21051693 A JP21051693 A JP 21051693A JP 21051693 A JP21051693 A JP 21051693A JP H0766607 A JPH0766607 A JP H0766607A
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- conductor
- frequency
- coaxial resonator
- dielectric block
- 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.)
- Pending
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、誘電体同軸共振器の製
造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a dielectric coaxial resonator.
【０００２】[0002]
【従来の技術】図３は従来のこの種の誘電体フィルタ１
の装着基板（図示せず）に面する側からの斜視図を示し
ており、例えば３段の誘電体同軸共振器構成となってい
る。また、図４は前記誘電体フィルタ１を共振器穴３の
軸方向に沿って切断した図である。この誘電体フィルタ
１は誘電体ブロック２に穴を貫通して設け、この穴の内
周面に電極膜を形成している。前記内周面には前記穴の
一方の端面寄りの電極膜を削除して所定の間隙７を設け
てある。そして前記間隙７を挟んで、前記間隙７により
近い穴の端面の外導体４と繋がる第１の内導体６と、も
う一方のより遠い穴の端面の外導体４と繋がる第２の内
導体８に別れており、前記間隙７を挟む両電極間にはス
トレー容量が発生する。また、誘電体ブロック２の表面
には外導体４となる電極膜を形成し、装着基板と対向す
る面から内導体の軸方向に沿う側面にかけて、前記共振
器穴３内の間隙７寄りに外部接続電極として、外部結合
容量を得るために信号入出力用の入出力電極５，５を一
対形成してある。なお、この入出力電極５，５は装着基
板に面する底面から内導体の軸方向に沿う側面にかけて
延長される場合が一般的であるが、装着基板に面する底
面のみにある場合、及び側面のみにある場合がある。2. Description of the Related Art FIG. 3 shows a conventional dielectric filter 1 of this type.
3 is a perspective view from the side facing the mounting substrate (not shown), for example, which has a three-stage dielectric coaxial resonator configuration. Further, FIG. 4 is a view in which the dielectric filter 1 is cut along the axial direction of the resonator hole 3. This dielectric filter 1 is provided through a hole in a dielectric block 2, and an electrode film is formed on the inner peripheral surface of this hole. A predetermined gap 7 is formed on the inner peripheral surface by removing the electrode film near one end surface of the hole. A first inner conductor 6 connected to the outer conductor 4 on the end face of the hole closer to the gap 7 and a second inner conductor 8 connected to the outer conductor 4 on the end face of the other farther hole with the gap 7 interposed therebetween. The stray capacitance is generated between the two electrodes that sandwich the gap 7. In addition, an electrode film serving as the outer conductor 4 is formed on the surface of the dielectric block 2, and the outer side is provided near the gap 7 in the resonator hole 3 from the surface facing the mounting substrate to the side surface along the axial direction of the inner conductor. A pair of input / output electrodes 5 and 5 for inputting / outputting signals are formed as connection electrodes in order to obtain external coupling capacitance. The input / output electrodes 5, 5 are generally extended from the bottom surface facing the mounting board to the side surface along the axial direction of the inner conductor. However, when the input / output electrodes 5 and 5 are only on the bottom surface facing the mounting board, and the side surfaces. May only be there.
【０００３】そして前記誘電体同軸共振器は装着基板に
装着後、前記外導体と前記外部接続電極が、装着基板の
各電極パターンにはんだ付けなどにより接続される。After the dielectric coaxial resonator is mounted on the mounting board, the outer conductor and the external connection electrodes are connected to each electrode pattern of the mounting board by soldering or the like.
【０００４】[0004]
【発明が解決しようとする課題】従来、誘電体フィルタ
１の周波数や結合などを調整する方法としては、共振器
穴３内の内周導体の電極膜を削除する方法があるが、周
波数や結合などの変化量への影響が大きくて歩留まりが
悪く、しかも大規模な機械を必要とするためコストが掛
り、微調整には適していなかった。Conventionally, as a method of adjusting the frequency and coupling of the dielectric filter 1, there is a method of removing the electrode film of the inner peripheral conductor in the resonator hole 3, but the frequency and coupling are It is not suitable for fine adjustment because it has a large effect on the amount of change such as the above and the yield is poor, and it requires a large-scale machine, resulting in high cost.
【０００５】そこで本発明の目的は、誘電体同軸共振器
において共振器穴内の内周導体の削除による周波数や結
合などの調整に代わり、周波数や結合などの変化量への
影響が小さく、簡単かつ安価に調整ができて歩留まりも
向上する製造方法を提供しようとするものである。Therefore, an object of the present invention is to replace the adjustment of the frequency and the coupling, etc. by deleting the inner peripheral conductor in the resonator hole in the dielectric coaxial resonator, and the influence on the variation amount of the frequency and the coupling is small. It is an object of the present invention to provide a manufacturing method which can be adjusted at a low cost and whose yield is improved.
【０００６】[0006]
【課題を解決するための手段】本発明は、誘電体ブロッ
クの外面に形成する外導体と、前記誘電体ブロックの穴
の内面に形成する少なくとも一つの内導体とを有し、所
定の周波数で共振する誘電体同軸共振器において、前記
内導体の軸方向に沿った前記誘電体ブロック表面の少な
くとも前記外導体の一部を削除するものである。The present invention has an outer conductor formed on the outer surface of a dielectric block and at least one inner conductor formed on the inner surface of the hole of the dielectric block, and at a predetermined frequency. In the resonating dielectric coaxial resonator, at least a part of the outer conductor on the surface of the dielectric block along the axial direction of the inner conductor is deleted.
【０００７】[0007]
【作用】本発明によれば、誘電体ブロックの外面に形成
する外導体と、前記誘電体ブロックの穴の内面に形成す
る少なくとも一つの内導体とを有し、所定の周波数で共
振する誘電体同軸共振器において、前記内導体の軸方向
に沿った前記誘電体ブロック表面の少なくとも前記外導
体の一部を削除することにより、周波数や結合などの調
整が簡単にかつ安価に、それぞれ若しくは同時にできる
ようになる。According to the present invention, a dielectric having an outer conductor formed on the outer surface of the dielectric block and at least one inner conductor formed on the inner surface of the hole of the dielectric block and resonating at a predetermined frequency. In the coaxial resonator, by removing at least a part of the outer conductor on the surface of the dielectric block along the axial direction of the inner conductor, adjustment of frequency and coupling can be performed easily and inexpensively or simultaneously. Like
【０００８】[0008]
【実施例】以下、本発明の実施例を図面を参照して説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【０００９】（実施例１）図１は誘電体フィルタ９の斜
視図であるが、誘電体ブロック２に３本の共振器穴３を
有し、穴の内周部には内導体として電極膜を形成してお
り、同じく誘電体ブロック２の表面には外導体４として
電極膜を形成している。また、共振器穴３の一端側から
少し穴内に入ったところには、内周部の電極膜を削除し
た間隙７を設けている。そして装着基板（図示せず）に
面する底面から内導体の軸方向に沿う側面にかけて、共
振器穴３内の間隙７寄りの位置に、外部接続電極として
信号入出力用の入出力電極５，５を設けている。(Embodiment 1) FIG. 1 is a perspective view of a dielectric filter 9, in which a dielectric block 2 has three resonator holes 3 and an electrode film as an inner conductor is formed on the inner peripheral portion of the hole. Similarly, an electrode film is formed as the outer conductor 4 on the surface of the dielectric block 2. In addition, a gap 7 is formed by removing the electrode film on the inner peripheral portion at a portion slightly inside the cavity 3 from one end side of the cavity 3. Then, from the bottom surface facing the mounting substrate (not shown) to the side surface along the axial direction of the inner conductor, at positions near the gap 7 in the resonator hole 3, the input / output electrodes 5 for signal input / output as external connection electrodes 5 are provided. 5 is provided.
【００１０】本実施例では、誘電体ブロック２の内導体
の軸方向に沿ったブロック表面の少なくとも外導体４の
一部を削除して、周波数の調整を行うものである。In this embodiment, at least part of the outer conductor 4 on the block surface along the axial direction of the inner conductor of the dielectric block 2 is deleted to adjust the frequency.
【００１１】図１の丸で囲んだＡの部分は、第２の内導
体８の間隙７寄りの外導体４の部分を示しており、この
部分を削除することにより周波数を上げることができ
る。The circled portion A in FIG. 1 shows the portion of the outer conductor 4 near the gap 7 of the second inner conductor 8, and the frequency can be increased by deleting this portion.
【００１２】また、同図の丸で囲んだＢの部分は、第２
の内導体８の開口部寄りの外導体４の部分を示してお
り、この部分を削除することにより周波数を下げること
ができる。The circled portion B in FIG.
The portion of the outer conductor 4 near the opening of the inner conductor 8 is shown, and the frequency can be lowered by deleting this portion.
【００１３】誘電体ブロック２の内導体の軸方向に沿っ
た側表面を削除する場合は、入出力電極５寄りの丸で囲
んだＥの部分を削除すれば、周波数を上げることがで
き、前記入出力電極５から離れた第２の内導体８の開口
部寄りの丸で囲んだＦの部分を削除すれば、周波数を下
げることができる。When the side surface along the axial direction of the inner conductor of the dielectric block 2 is deleted, the frequency can be increased by deleting the circled portion E near the input / output electrode 5. The frequency can be lowered by deleting the circled portion F near the opening of the second inner conductor 8 which is separated from the writing output electrode 5.
【００１４】（実施例２）本実施例を同じく図１を用い
て説明する。実施例１と同一部分は同一符号を用いて説
明を省略する。本実施例では、誘電体ブロック２の内導
体の軸方向に沿ったブロック表面の少なくとも外導体４
の一部を削除して、周波数と結合の両方の調整を行うも
のである。(Embodiment 2) This embodiment will be described with reference to FIG. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In the present embodiment, at least the outer conductor 4 on the block surface along the axial direction of the inner conductor of the dielectric block 2.
It removes a part of and adjusts both frequency and coupling.
【００１５】図１の丸で囲んだＣの部分は、第１の内導
体６と第２の内導体８に挟まれた間隙７の上部である。
この部分の外導体４を削除することにより、周波数の調
整のほかに、間隙７と外導体４との間のストレー容量を
変えることになり、結合の調整も同時に行うことができ
る。The circled portion C in FIG. 1 is the upper part of the gap 7 sandwiched between the first inner conductor 6 and the second inner conductor 8.
By removing the outer conductor 4 in this portion, the stray capacitance between the gap 7 and the outer conductor 4 is changed in addition to the adjustment of the frequency, and the adjustment of the coupling can be performed at the same time.
【００１６】また、２本の共振器穴３，３に挟まれた箇
所の上部にあたる、丸で囲んだＤの部分の外導体を削除
することで，周波数と結合の両方を同時に調整すること
ができる。Further, by deleting the outer conductor of the circled portion D, which is the upper part of the portion sandwiched by the two resonator holes 3 and 3, both the frequency and the coupling can be adjusted at the same time. it can.
【００１７】以上の実施例１及び実施例２で述べた調整
方法は、これまで述べたコムラインタイプのほかに、誘
電体フィルタの形状として図２に示すように、（ａ）外
導体部分に段差を有するタイプ、（ｂ）内導体を有する
共振器穴の直径がブロック内で変化するタイプ、（ｃ）
誘電体ブロックを貼り合わせるタイプ、（ｄ）共振器穴
内の内導体の間隙が共振器穴の交互の端面寄りに位置す
るインターデジタルタイプのいずれか、または複合され
たものに適用できる。In addition to the comb-line type described above, the adjustment method described in the first and second embodiments is not limited to (a) the outer conductor portion as shown in FIG. 2 as the shape of the dielectric filter. A type having a step, (b) a type in which the diameter of a resonator hole having an inner conductor changes within a block, (c)
The invention can be applied to any of a type in which dielectric blocks are bonded together, (d) an interdigital type in which a gap between inner conductors in a resonator hole is located near alternate end faces of the resonator hole, or a compound type.
【００１８】[0018]
【発明の効果】本発明は以上のように、誘電体ブロック
の外面に形成する外導体と、前記誘電体ブロックの穴の
内面に形成する少なくとも一つの内導体とを有し、所定
の周波数で共振する誘電体同軸共振器において、前記内
導体の軸方向に沿った前記誘電体ブロック表面の少なく
とも前記外導体の一部を削除するものであるから、従来
の内導体内部の電極を削除する方法に代わり、周波数な
どの変化量への影響が小さく、簡単にしかも安価に周波
数や結合の調整ができるため、歩留まりが向上しコスト
ダウンに寄与するものである。As described above, the present invention has the outer conductor formed on the outer surface of the dielectric block and at least one inner conductor formed on the inner surface of the hole of the dielectric block, and has a predetermined frequency. In the resonating dielectric coaxial resonator, since at least a part of the outer conductor on the surface of the dielectric block along the axial direction of the inner conductor is deleted, the conventional method of deleting the electrode inside the inner conductor Instead, the influence on the amount of change in frequency or the like is small, and the frequency and coupling can be adjusted easily and inexpensively, which improves the yield and contributes to cost reduction.
【図１】本発明の実施例１及び実施例２の誘電体フィル
タの斜視図である。FIG. 1 is a perspective view of a dielectric filter according to first and second embodiments of the present invention.
【図２】（ａ）は従来例の誘電体フィルタの斜視図であ
る。（ｂ）は従来例の誘電体フィルタの斜視図である。
（ｃ）は従来例の誘電体フィルタの斜視図である。
（ｄ）は従来例の誘電体フィルタの斜視図である。FIG. 2A is a perspective view of a conventional dielectric filter. (B) is a perspective view of a dielectric filter of a conventional example.
(C) is a perspective view of the conventional dielectric filter.
(D) is a perspective view of the dielectric filter of a prior art example.
【図３】従来例の誘電体フィルタの斜視図である。FIG. 3 is a perspective view of a conventional dielectric filter.
【図４】従来例の誘電体フィルタを切断した状態の斜視
図である。FIG. 4 is a perspective view showing a state in which a conventional dielectric filter is cut.
２ 誘電体ブロック ４ 外導体 2 Dielectric block 4 Outer conductor
───────────────────────────────────────────────────── フロントページの続き (72)発明者 加藤 英幸 京都府長岡京市天神二丁目26番10号 株式 会社村田製作所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideyuki Kato 2-26-10 Tenjin Tenjin, Nagaokakyo, Kyoto Prefecture Murata Manufacturing Co., Ltd.
Claims (1)
と、前記誘電体ブロックの穴の内面に形成する少なくと
も一つの内導体とを有し、所定の周波数で共振する誘電
体同軸共振器において、前記内導体の軸方向に沿った前
記誘電体ブロック表面の少なくとも前記外導体の一部を
削除することを特徴とする誘電体同軸共振器の製造方
法。1. A dielectric coaxial resonator having an outer conductor formed on an outer surface of a dielectric block and at least one inner conductor formed on an inner surface of a hole of the dielectric block, the dielectric coaxial resonator resonating at a predetermined frequency. A method for manufacturing a dielectric coaxial resonator, wherein at least a part of the outer conductor on the surface of the dielectric block along the axial direction of the inner conductor is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21051693A JPH0766607A (en) | 1993-08-25 | 1993-08-25 | Production of dielectric coaxial resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21051693A JPH0766607A (en) | 1993-08-25 | 1993-08-25 | Production of dielectric coaxial resonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0766607A true JPH0766607A (en) | 1995-03-10 |
Family
ID=16590667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21051693A Pending JPH0766607A (en) | 1993-08-25 | 1993-08-25 | Production of dielectric coaxial resonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0766607A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6235341B1 (en) | 1994-06-21 | 2001-05-22 | Ngk Spark Plug Co., Ltd. | Method of preparing a high frequency dielectric filter device using screen printing |
| US6535078B1 (en) | 1999-09-03 | 2003-03-18 | Murata Manufacturing Co., Ltd. | Dielectric filter, dielectric duplexer, and communication system |
-
1993
- 1993-08-25 JP JP21051693A patent/JPH0766607A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6235341B1 (en) | 1994-06-21 | 2001-05-22 | Ngk Spark Plug Co., Ltd. | Method of preparing a high frequency dielectric filter device using screen printing |
| US6535078B1 (en) | 1999-09-03 | 2003-03-18 | Murata Manufacturing Co., Ltd. | Dielectric filter, dielectric duplexer, and communication system |
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