JPH0255409A - Manufacture of dielectric filter - Google Patents

Manufacture of dielectric filter

Info

Publication number
JPH0255409A
JPH0255409A JP20665388A JP20665388A JPH0255409A JP H0255409 A JPH0255409 A JP H0255409A JP 20665388 A JP20665388 A JP 20665388A JP 20665388 A JP20665388 A JP 20665388A JP H0255409 A JPH0255409 A JP H0255409A
Authority
JP
Japan
Prior art keywords
block
dielectric
dielectric block
adhesive tape
hole
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
Application number
JP20665388A
Other languages
Japanese (ja)
Inventor
Kazuhisa Sano
和久 佐野
Akiji Miyashita
宮下 明司
Yasuhiko Kikuyama
菊山 泰彦
Satoshi Miyoshi
三好 智
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toko Inc
Original Assignee
Toko Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toko Inc filed Critical Toko Inc
Priority to JP20665388A priority Critical patent/JPH0255409A/en
Publication of JPH0255409A publication Critical patent/JPH0255409A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To facilitate the manufacture by choking an entry of a throughhole acting like a coupling hole provided between resonator units of a dielectric block by an adhesive tape, immersing the block into a conductor paste thereby preventing the formation of the conductor film into the coupling hole. CONSTITUTION:Throughholes 11, 11 are provided to the dielectric block 10 at a prescribed interval. A coupling hole 12 in parallel with the throughholes 11 is provided between the throughoholes 11 and the entrance of the coupling hole 12 is choked by an adhesive tape 13. The block 10 is dipped into the conductor paste to form the conductor film to all parts of the block except the coupling hole 12, the block is lifted out of the paste 16 and dried and baked. In this case, the adhesive tape 13 is burned and the conductor film is coated to the place of the tape having been burned. The dielectric block at one end of the throughholes 11 is ground to expose the dielectric substance and the part is used for an end face. The grounding is being conducted till the size reaches a size in response to the wavelength of the prescribed resonance frequency. Thus, the manufacture process is simplified and the cost is reduced.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、誘電体フィルタの製造方法に係るもので、特
に複数個の共振子ユニットを一体化したブロック型の誘
電体フィルタの導体膜の形成方法に関するものである。
[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing a dielectric filter, and particularly to a method for manufacturing a conductive film of a block-type dielectric filter that integrates a plurality of resonator units. This relates to a forming method.

〔従来技術〕[Prior art]

誘電体ブロックに所定の間隔で貫通孔を形成してその表
面に内導体を形成し、外周面に外導体を形成し、貫通孔
の一端側に導体膜を形成して短絡端面とした誘電体フィ
ルタが、マイクロ波帯において各方面で用いられるよう
になっている。
A dielectric material in which through-holes are formed at predetermined intervals in a dielectric block, an inner conductor is formed on the surface of the dielectric block, an outer conductor is formed on the outer peripheral surface, and a conductive film is formed on one end of the through-hole to create a short-circuited end surface. Filters are now being used in various fields in the microwave band.

このようなブロック形の誘電体フィルタは組立が容易で
あり、機械的な強度の面でも優れている利点がある。
Such a block-shaped dielectric filter has the advantage of being easy to assemble and having excellent mechanical strength.

第3図は、そのようなブロック形の誘電体フィルタの斜
視図である。直方体の誘電体ブロック30に断面が円形
となる二個の貫通孔31が形成されており、この貫通孔
31の表面には導体膜が形成されて、内導体となってい
る。貫通孔31と平行な外周面にも導体膜が形成され、
外導体となっている。
FIG. 3 is a perspective view of such a block-shaped dielectric filter. Two through holes 31 having a circular cross section are formed in a dielectric block 30 having a rectangular parallelepiped shape, and a conductive film is formed on the surface of the through holes 31 to serve as an inner conductor. A conductive film is also formed on the outer peripheral surface parallel to the through hole 31,
It is an outer conductor.

上面にも導体膜が形成され、短絡端面となっているが、
下面のみは導体膜が形成されず、開放端面となっている
A conductive film is also formed on the top surface, making it a short-circuited end surface.
No conductor film is formed on only the bottom surface, which is an open end surface.

貫通孔31の内導体と外周面の導体膜によって、二個の
共振子ユニットが形成される。これらの共振子ユニット
間には、結合を調整するための結合孔32が形成されて
おり、この結合孔32の表面には導体膜が形成されず、
誘電体が露出している。
Two resonator units are formed by the inner conductor of the through hole 31 and the conductor film on the outer peripheral surface. A coupling hole 32 for adjusting coupling is formed between these resonator units, and no conductor film is formed on the surface of this coupling hole 32.
Dielectric is exposed.

〔課題〕〔assignment〕

上記のように、貫通孔には、導体膜が必要なものと、導
体膜があってはならないもの、の二種類がある。
As mentioned above, there are two types of through holes: those that require a conductive film and those that do not require a conductive film.

そのため、導体膜の形成は、筆を用いて導体ペーストを
所定の表面および貫通孔内に塗布する作業などが必要で
ある。したがって、導体膜の形成に多くの工数を必要と
している。
Therefore, formation of the conductive film requires work such as applying conductive paste to a predetermined surface and inside the through hole using a brush. Therefore, many man-hours are required to form the conductive film.

本発明は、誘電体ブロックを導体ペーストに浸漬して表
面および所定の貫通孔内のみに導体膜を形成できる、効
率的な誘電体フィルタの製造方法を提供するものである
The present invention provides an efficient method for manufacturing a dielectric filter in which a dielectric block is immersed in a conductive paste to form a conductive film only on the surface and within predetermined through holes.

〔課題を解決するための手段〕[Means to solve the problem]

本発明は、結合孔部分のみを粘着テープで覆った状態で
誘電体ブロックを導体ペーストに浸漬するとともに、導
体ペーストの誘電体ブロックへの焼付時に粘着テープを
燃焼させで除去することによって、上記の課題を解決す
るものである。
In the present invention, a dielectric block is immersed in conductor paste with only the bonding hole portion covered with adhesive tape, and the adhesive tape is burned and removed when the conductor paste is baked onto the dielectric block. It is something that solves problems.

すなわち、複数の貫通孔を具えた誘電体ブロックを導体
ペーストに浸漬して、該誘電体ブロックの表面および所
定の貫通孔内に導体膜を形成する誘電体フィルタの製造
方法において、該誘電体ブロックの共振子ユニット間の
結合孔となる貫通孔の少なくとも一端を粘着デー1で覆
い、導体ペーストに該誘電体ブロックを浸漬して、該誘
電体ブロックの表面と共振子ユニソ;・の内導体となる
貫通孔内に導体膜を形成し、該結合孔内には導体膜を形
成しないことに特徴を有するものである。
That is, in a method for manufacturing a dielectric filter in which a dielectric block having a plurality of through holes is immersed in a conductive paste to form a conductive film on the surface of the dielectric block and in predetermined through holes, the dielectric block Cover at least one end of the through hole, which serves as a coupling hole between the resonator units, with adhesive tape 1, and immerse the dielectric block in conductive paste to connect the surface of the dielectric block and the inner conductor of the resonator unit. It is characterized in that a conductive film is formed within the through hole, but no conductive film is formed within the coupling hole.

更に、導体ペーストを焼付けて内外導体を形成し、同時
に粘着テープを燃焼させて除去し、粘着テープの除去さ
れた部分に導体膜を必要に応じて塗布し、開放端面側を
研磨して所定の形状のブロック形の誘電体フィルタが得
られる。
Furthermore, the conductor paste is baked to form the inner and outer conductors, the adhesive tape is burned and removed at the same time, a conductor film is applied as necessary to the part where the adhesive tape was removed, and the open end side is polished to the desired shape. A block-shaped dielectric filter is obtained.

〔実施例〕〔Example〕

以下、図面を参照して、本発明の実施例について説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.

第1図は、本発明の実施例を示す正面図で、結合孔の両
端を塞いだ場合を示している。誘電体ブロック10には
共振子ユニットの内導体が形成される貫通孔11と、共
振子ユニット間の結合を調整するための結合孔12が形
成されている。結合孔12の両端、すなわち短絡端面と
開放端面側は粘着テープ13で塞がれて、導体ペースト
16に浸漬される。
FIG. 1 is a front view showing an embodiment of the present invention, in which both ends of the coupling hole are closed. The dielectric block 10 has a through hole 11 in which the inner conductor of the resonator unit is formed, and a coupling hole 12 for adjusting the coupling between the resonator units. Both ends of the coupling hole 12 , that is, the short-circuited end face and the open end face are closed with adhesive tape 13 and immersed in conductor paste 16 .

両端が塞がれているので、全面に導体膜が形成されるよ
うに誘電体ブロック10全体を浸漬するごとができる。
Since both ends are closed, the entire dielectric block 10 can be immersed so that a conductive film is formed on the entire surface.

全面に導体ペース1−が形成された誘電体ブロックは導
体ペーストから引き上げられ、乾燥させた後、焼成され
てm体ペーストが焼付けられる。その際に、粘着テープ
は燃焼し、焼成後には残らない。
The dielectric block with the conductive paste 1- formed on its entire surface is pulled up from the conductive paste, dried, and then fired to form an m-body paste. At that time, the adhesive tape burns and does not remain after firing.

このように粘着テープとしては、焼成時に燃焼するもの
であればどのようなものも用いることができ、通常用い
られる接着用テープを使用すればよい。粘着力もあまり
強くする必要はなく、ペーストへの浸漬時のみ密着して
いる程度のものでよい。製図用のトラフティングテープ
を用いたところ、十分機能を果たすことが確認された。
As described above, any adhesive tape can be used as long as it burns during firing, and a commonly used adhesive tape may be used. It is not necessary to make the adhesive force very strong, and it is sufficient that it sticks only when immersed in the paste. When trafting tape for drafting was used, it was confirmed that it functioned satisfactorily.

粘着テープを貼った部分には導体膜が形成されていない
。したがって、短絡端面の結合孔周辺には導体膜が形成
されていない状態で焼成が終わることになる。磁束の漏
れを防止するために、この部分に導体膜を印刷等によっ
て形成しておくとよい。
No conductor film is formed on the area where the adhesive tape is applied. Therefore, the firing ends with no conductor film formed around the bonding hole on the short-circuited end face. In order to prevent leakage of magnetic flux, it is preferable to form a conductive film on this portion by printing or the like.

貫通孔の一端側の誘電体ブロック表面を研磨して誘電体
を露出させると、この表面を開放端面とすることかでき
る。研磨は、所定の共振周波数の波長に応じた寸法とな
るまで行われる。
By polishing the surface of the dielectric block at one end of the through hole to expose the dielectric, this surface can be made into an open end surface. Polishing is performed until the dimensions correspond to the wavelength of a predetermined resonance frequency.

第2図は、結合孔の一端のみを塞いだ状態で導体ペース
(・に浸漬する例を示している。誘電体ブロック20に
は共振子ユニットの内導体が形成される貫通孔21と、
共振子ユニット間の結合を調整するだめの結合孔22が
形成されている。結合孔22の一端、すなわち短絡端面
となる下面側は粘着テープ23で塞がれて、導体ペース
ト26に浸漬される。
FIG. 2 shows an example in which the coupling hole is immersed in conductor paste (.) with only one end thereof closed. The dielectric block 20 has a through hole 21 in which the inner conductor of the resonator unit is formed;
A coupling hole 22 is formed to adjust the coupling between the resonator units. One end of the coupling hole 22 , that is, the lower surface side serving as the short-circuited end surface is closed with an adhesive tape 23 and immersed in a conductive paste 26 .

上面は塞がれていないので、上面に導体ペースト16が
かからない状態で誘電体ブロック2oを浸漬しなければ
ならない。
Since the top surface is not covered, the dielectric block 2o must be immersed without the conductive paste 16 being applied to the top surface.

これによって、貫通孔21内には導体膜が形成されるが
、貫通孔22内には導体膜が形成されない。
As a result, a conductive film is formed inside the through hole 21, but no conductive film is formed inside the through hole 22.

貫通孔21と誘電体ブロック20の側面の上端部には僅
かに導体膜の形成されない部分ができるが、後の工程で
この面は開放端面として研磨されるので問題はない。
Although there is a slight portion where the conductive film is not formed on the upper end of the side surface of the through hole 21 and the dielectric block 20, there is no problem because this surface will be polished as an open end surface in a later step.

この後、焼成、印刷、研磨等の工程を経て誘電体フィル
タが完成するのは、前記の例と同様である。
Thereafter, the dielectric filter is completed through steps such as firing, printing, and polishing, as in the previous example.

〔効果〕〔effect〕

本発明によれば、導体ペーストへの浸漬によって導体膜
を容易に形成することができる。したがって、誘電体フ
ィルタの製造工程を大幅に簡略化でき、低コストの誘電
体フィルタが得られる。
According to the present invention, a conductive film can be easily formed by dipping into a conductive paste. Therefore, the manufacturing process of the dielectric filter can be greatly simplified, and a low-cost dielectric filter can be obtained.

また、テープの除去の工程も不要であり、工数低減の上
で有利である。
Furthermore, the step of removing the tape is not required, which is advantageous in terms of reducing the number of man-hours.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図と第2図は本発明の実施例を示す正面図であり、
第3図は本発明を適用する誘電体フィルタの斜視図であ
る。 10.20・・・・・誘電体ブロック 11・21・・・・・貫通孔 12.22・・・・・結合孔 13.23・・・・・粘着テープ 16.26・・、・・導体ペースト
1 and 2 are front views showing an embodiment of the present invention,
FIG. 3 is a perspective view of a dielectric filter to which the present invention is applied. 10.20...Dielectric block 11, 21...Through hole 12.22...Coupling hole 13.23...Adhesive tape 16.26...Conductor paste

Claims (6)

【特許請求の範囲】[Claims] (1)複数の貫通孔を具えた誘電体ブロックを導体ペー
ストに浸漬して、該誘電体ブロックの表面および所定の
貫通孔内に導体膜を形成する誘電体フィルタの製造方法
において、該誘電体ブロックの共振子ユニット間の結合
孔となる貫通孔の少なくとも一端を粘着テープで覆い、
導体ペーストに該誘電体ブロックを浸漬して、該誘電体
ブロックの表面と共振子ユニットの内導体となる貫通孔
内に導体膜を形成し、該結合孔内には導体膜を形成しな
いことを特徴とする誘電体フィルタの製造方法。
(1) A method for manufacturing a dielectric filter, in which a dielectric block having a plurality of through holes is immersed in a conductive paste to form a conductive film on the surface of the dielectric block and in predetermined through holes. Covering at least one end of the through hole that serves as the coupling hole between the resonator units of the block with adhesive tape,
The dielectric block is immersed in a conductive paste to form a conductive film on the surface of the dielectric block and in the through hole that will become the inner conductor of the resonator unit, and that no conductive film is formed in the coupling hole. A method for manufacturing a featured dielectric filter.
(2)該結合孔となる貫通孔の両端を粘着テープで覆う
請求項第1項記載の誘電体フィルタの製造方法。
(2) The method for manufacturing a dielectric filter according to claim 1, wherein both ends of the through hole which becomes the coupling hole are covered with adhesive tape.
(3)該結合孔となる貫通孔の一端を粘着テープで覆い
、当該覆った面を下にして反対表面に導体ペーストが付
着しない深さまで該誘電体ブロックを導体ペーストに浸
漬する請求項第1項記載の誘電体フィルタの製造方法。
(3) Covering one end of the through hole that will become the coupling hole with adhesive tape, and immersing the dielectric block in the conductive paste with the covered side facing down to a depth that does not allow the conductive paste to adhere to the opposite surface. A method for manufacturing a dielectric filter as described in .
(4)複数の貫通孔を具えた誘電体ブロックを導体ペー
ストに浸漬して、該誘電体ブロックの表面および所定の
貫通孔内に導体膜を形成する誘電体フィルタの製造方法
において、該誘電体ブロックの共振子ユニット間の結合
孔となる貫通孔の少なくとも一端を粘着テープで覆い、
導体ペーストに該誘電体ブロックを浸漬し、該誘電体ブ
ロックに導体を焼付るとともに該粘着テープを燃焼させ
、該誘電体ブロックの表面と共振子ユニットの内導体と
なる貫通孔内に導体膜を形成し、該結合孔内には導体膜
を形成しないことを特徴とする誘電体フィルタの製造方
法。
(4) A method for manufacturing a dielectric filter, in which a dielectric block having a plurality of through holes is immersed in a conductive paste to form a conductive film on the surface of the dielectric block and in predetermined through holes. Covering at least one end of the through hole that serves as the coupling hole between the resonator units of the block with adhesive tape,
The dielectric block is immersed in a conductive paste, a conductor is baked onto the dielectric block, and the adhesive tape is burned to form a conductive film on the surface of the dielectric block and in the through-hole that will become the inner conductor of the resonator unit. A method for manufacturing a dielectric filter, characterized in that a conductive film is not formed within the coupling hole.
(5)複数の貫通孔を具えた誘電体ブロックを導体ペー
ストに浸漬して、該誘電体ブロックの表面および所定の
貫通孔内に導体膜を形成する誘電体フィルタの製造方法
において、該誘電体ブロックの共振子ユニット間の結合
孔となる貫通孔の少なくとも一端を粘着テープで覆い、
導体ペーストに該誘電体ブロックを浸漬し、該誘電体ブ
ロックに導体を焼付るとともに該粘着テープを燃焼させ
、該粘着テープで覆われていた部分に導体膜を形成し、
該誘電体ブロックの表面と共振子ユニットの内導体とな
る貫通孔内に導体膜を形成し、該結合孔内には導体膜を
形成しないことを特徴とする誘電体フィルタの製造方法
(5) A method for manufacturing a dielectric filter, in which a dielectric block having a plurality of through holes is immersed in a conductive paste to form a conductive film on the surface of the dielectric block and in predetermined through holes. Covering at least one end of the through hole that serves as the coupling hole between the resonator units of the block with adhesive tape,
immersing the dielectric block in a conductive paste, baking a conductor onto the dielectric block and burning the adhesive tape to form a conductive film on the portion covered with the adhesive tape;
A method for manufacturing a dielectric filter, characterized in that a conductor film is formed on the surface of the dielectric block and in the through-hole that becomes the inner conductor of the resonator unit, but no conductor film is formed in the coupling hole.
(6)複数の貫通孔を具えた誘電体ブロックを導体ペー
ストに浸漬して、該誘電体ブロックの表面および所定の
貫通孔内に導体膜を形成する誘電体フィルタの製造方法
において、該誘電体ブロックの共振子ユニット間の結合
孔となる貫通孔の少なくとも一端を粘着テープで覆い、
導体ペーストに該誘電体ブロックを浸漬し、該誘電体ブ
ロックに導体を焼付のとともに該粘着テープを燃焼させ
、該粘着テープで覆われていた部分に導体膜を形成し、
該誘電体ブロックの開放端面側を所定の長さとなるよう
に研磨し、該誘電体ブロックの表面と共振子ユニットの
内導体となる貫通孔内に導体膜を形成し、該結合孔内に
は導体膜を形成しないことを特徴とする誘電体フィルタ
の製造方法。
(6) A method for manufacturing a dielectric filter, in which a dielectric block having a plurality of through holes is immersed in a conductive paste to form a conductive film on the surface of the dielectric block and in predetermined through holes. Covering at least one end of the through hole that serves as the coupling hole between the resonator units of the block with adhesive tape,
immersing the dielectric block in a conductive paste, baking a conductor onto the dielectric block and burning the adhesive tape to form a conductive film on the portion covered with the adhesive tape;
The open end surface side of the dielectric block is polished to a predetermined length, a conductor film is formed on the surface of the dielectric block and in the through hole that will become the inner conductor of the resonator unit, and a conductive film is formed in the coupling hole. A method for manufacturing a dielectric filter, characterized in that a conductive film is not formed.
JP20665388A 1988-08-20 1988-08-20 Manufacture of dielectric filter Pending JPH0255409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20665388A JPH0255409A (en) 1988-08-20 1988-08-20 Manufacture of dielectric filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20665388A JPH0255409A (en) 1988-08-20 1988-08-20 Manufacture of dielectric filter

Publications (1)

Publication Number Publication Date
JPH0255409A true JPH0255409A (en) 1990-02-23

Family

ID=16526913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20665388A Pending JPH0255409A (en) 1988-08-20 1988-08-20 Manufacture of dielectric filter

Country Status (1)

Country Link
JP (1) JPH0255409A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2695270A1 (en) * 1992-08-31 1994-03-04 Siemens Matsushita Components Method of metallization of monolithic ceramic microwave filters.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2695270A1 (en) * 1992-08-31 1994-03-04 Siemens Matsushita Components Method of metallization of monolithic ceramic microwave filters.
JPH06196909A (en) * 1992-08-31 1994-07-15 Siemens Matsushita Components Gmbh & Co Kg Metallic coating processing of microwave ceramics filter

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