JPH0456501A - Dielectric filter - Google Patents
Dielectric filterInfo
- Publication number
- JPH0456501A JPH0456501A JP16770890A JP16770890A JPH0456501A JP H0456501 A JPH0456501 A JP H0456501A JP 16770890 A JP16770890 A JP 16770890A JP 16770890 A JP16770890 A JP 16770890A JP H0456501 A JPH0456501 A JP H0456501A
- Authority
- JP
- Japan
- Prior art keywords
- holes
- electrode
- filter
- dielectric
- frequency
- 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
- 239000004020 conductor Substances 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims description 11
- 239000003989 dielectric material Substances 0.000 claims description 5
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、通信機器に用いることができる誘電体フィル
タに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a dielectric filter that can be used in communication equipment.
従来の技術
従来、この種の誘電体フィルタは、第４図に示すような
構造であった。第４図において、２１はブロック状の誘
電体、２２は金属導体、２３は貫通孔、２４は入力及び
出力用の電極である。2. Description of the Related Art Conventionally, this type of dielectric filter has had a structure as shown in FIG. In FIG. 4, 21 is a block-shaped dielectric, 22 is a metal conductor, 23 is a through hole, and 24 is an input and output electrode.
発明が解決しようとする課題
このようなフィルタ装置においては、ブロック状の誘電
体２１に複数個の貫通孔２４を設け、各々の貫通孔２４
部分を共振器として用いており、全体としである定めた
周波数のフィルタとしている。しかしながら以上の構成
で全体としである定めた周波数のフィルタとするために
は誘電体２１の一部に段差Ａをつけて中央部分の貫通孔
２４を実質的に長くして周波数調整を行わなければなら
ない、ところが段差Ａは一旦作成するとその高さ調整が
できず、以後の周波数微調整が行えないと云う問題があ
った。そこで本発明は周波数微調整が行えるようにする
ことを目的とするものである。Problems to be Solved by the Invention In such a filter device, a plurality of through holes 24 are provided in the block-shaped dielectric 21, and each through hole 24 is
One part is used as a resonator, and the whole serves as a filter with a certain frequency. However, in order to obtain a filter with a certain frequency as a whole with the above configuration, it is necessary to add a step A to a part of the dielectric 21 and substantially lengthen the through hole 24 in the center to adjust the frequency. However, once the step A is created, its height cannot be adjusted, and there is a problem in that the frequency cannot be finely adjusted thereafter. Therefore, an object of the present invention is to enable fine frequency adjustment.
課題を解決するための手段
そしてこの目的を達成するために本発明は、面に、その
内部に向けて設けた複数の穴を有する誘電体と、この誘
電体の表面と、前記穴内に設けた金属導体とを備え、前
記金属導体の一部を少なくとも２箇所除去するとともに
、この除去部に電極を形成したものである。Means for Solving the Problems And to achieve this object, the present invention provides a dielectric material having a plurality of holes provided in a surface toward the inside thereof, a surface of the dielectric material, and a plurality of holes provided in the holes. A metal conductor is removed from at least two portions of the metal conductor, and electrodes are formed in the removed portions.
作用
この構成によれば穴の深さを変えることにより、各穴部
の共振周波数を変えることができるため、フィルタとし
ての周波数を簡単に微調整することができるものとなる
。Effect: According to this configuration, the resonant frequency of each hole can be changed by changing the depth of the hole, so the frequency of the filter can be easily finely adjusted.
実施例
第１図（ａ）、 （ｂ）に本発明の第１の実施例を示し
ており、第１図において、１は誘電体であり、その内部
に向けて設けた穴５，６．７を有し、穴５〜７内と表面
には、金属導体２が設けられている。Embodiment FIGS. 1(a) and 1(b) show a first embodiment of the present invention. In FIG. 1, 1 is a dielectric material, and holes 5, 6, . 7, and metal conductors 2 are provided inside the holes 5 to 7 and on the surface.
また、金属導体２のうち穴５〜７の開口部以外の面には
２箇所が形成され、この除去部３内に電極４が形成され
ている。Further, two locations are formed on the surface of the metal conductor 2 other than the openings of the holes 5 to 7, and an electrode 4 is formed in the removed portion 3.
この実施例によれば、誘電体１内部に向けて設けられた
穴の５．６．７の部分が夫々共振器として働いており、
各共振器間は穴５〜７夫々の間隔ｌＩにより定まる定数
に１により結合している。また穴５〜７と電極４は、そ
の間隔１２により定まる定数に２により結合しており、
全体として、フィルタを構成している。According to this embodiment, portions 5, 6, and 7 of the hole provided toward the inside of the dielectric 1 work as resonators, respectively.
Each resonator is coupled by a constant 1 determined by the interval lI between the holes 5 to 7. Further, the holes 5 to 7 and the electrode 4 are connected by a constant 2 determined by the interval 12,
As a whole, they constitute a filter.
第２図において本発明の第２の実施例を示しており、第
２図において、第１図に示す部分と同一部分については
、同一番号を付して説明を省略する。この実施例におい
ては、誘電体１表面上に、穴５と６及び六６と７間の結
合度を調整するための電極図を各穴５．６間、６．７間
に対応する面に金属導体２の除去部３を設け、ここに設
けたものである。A second embodiment of the present invention is shown in FIG. 2. In FIG. 2, the same parts as those shown in FIG. In this embodiment, electrode diagrams for adjusting the degree of coupling between holes 5 and 6 and between holes 6 and 7 are placed on the surface of the dielectric 1 on a surface corresponding to between holes 5.6 and 6.7. A removed portion 3 of the metal conductor 2 is provided here.
第３図に本発明の第３の実施例を示しており、第３図に
おいて、第１図に示す部分と同一部分については、同一
番号を付して説明を省略する。この実施例においては、
５〜７の開口部を持つ面及び２個の電極４を除く第３の
面に除去部３を設けて、そこに容量調整電極９を設けた
ものである。A third embodiment of the present invention is shown in FIG. 3. In FIG. 3, the same parts as those shown in FIG. In this example,
A removed portion 3 is provided on the surface having 5 to 7 openings and a third surface excluding the two electrodes 4, and a capacitance adjustment electrode 9 is provided thereon.
発明の効果
以上のように本発明によれば、一面にその内部に向けて
設けた複数の穴を有する誘電体と、この誘電体の表面と
前記穴内に設けた金属導体とを備え、前記金属導体の一
部を少なくとも２箇所除去するとともにこの除去部に電
極を形成して誘電体フィルタを構成しているため、穴の
深さ調整により容易に周波数調整の行えるものとなる。Effects of the Invention As described above, the present invention includes a dielectric body having a plurality of holes provided on one surface toward the inside thereof, and a metal conductor provided on the surface of the dielectric body and in the holes, Since at least two parts of the conductor are removed and electrodes are formed in the removed parts to form a dielectric filter, the frequency can be easily adjusted by adjusting the depth of the holes.
第１図（ａ）は、本発明の第１の実施例の誘電体フィル
タの斜視図であり、第１図［有］）は第１図（ａ）のＸ
−Ｘ′の断面図、第２図、第３図は本発明の第２、第３
の実施例の誘電体フィルタの斜視図、第４図は従来のフ
ィルタの斜視図である。
！・・・誘電体、２・・・金属導体、３・・・金属導体
の除去部、４・・・電極、５，６．７・・・穴。
代理人の氏名 弁理士 粟野重孝 はか１名（Ｃ）
（ｂ）
第２図FIG. 1(a) is a perspective view of a dielectric filter according to a first embodiment of the present invention, and FIG.
-X' sectional view, FIGS. 2 and 3 are the second and third
FIG. 4 is a perspective view of a conventional filter. ! . . . Dielectric, 2. Metal conductor, 3. Removal portion of metal conductor, 4. Electrode, 5, 6.7. Hole. Name of agent: Patent attorney Shigetaka Awano (C) (b) Figure 2
Claims (2)
る誘電体と、この誘電体の表面と前記穴内に設けた金属
導体とを備え、前記金属導体の一部を少なくとも２箇所
除去するとともに、この除去部に電極を形成した誘電体
フィルタ。(1) A dielectric material having a plurality of holes facing inward on one surface, and a metal conductor provided on the surface of the dielectric material and in the holes, and at least two portions of the metal conductor are removed. At the same time, this dielectric filter has an electrode formed on the removed portion.
面上に容量調整電極を設けた、特許請求の範囲第１項記
載の誘電体フィルタ。(2) The dielectric filter according to claim 1, wherein a capacitance adjustment electrode is provided on a surface other than the surface having the hole opening and the surface provided with the electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16770890A JPH0456501A (en) | 1990-06-26 | 1990-06-26 | Dielectric filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16770890A JPH0456501A (en) | 1990-06-26 | 1990-06-26 | Dielectric filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0456501A true JPH0456501A (en) | 1992-02-24 |
Family
ID=15854741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16770890A Pending JPH0456501A (en) | 1990-06-26 | 1990-06-26 | Dielectric filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0456501A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5614875A (en) * | 1994-07-19 | 1997-03-25 | Dae Ryun Electronics, Inc. | Dual block ceramic resonator filter having common electrode defining coupling/tuning capacitors |
| US6034579A (en) * | 1994-02-18 | 2000-03-07 | Murata Manufacturing Co., Ltd. | Dielectric filter of the band elimination type |
| US6060965A (en) * | 1993-12-14 | 2000-05-09 | Electronics And Telecommunications Research Institute | Dielectric resonator and filter including capacitor electrodes on a non-conductive surface |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63109601A (en) * | 1986-10-28 | 1988-05-14 | Toshiba Corp | Filter |
| JPH0451603A (en) * | 1990-06-19 | 1992-02-20 | Murata Mfg Co Ltd | Dielectric filter |
-
1990
- 1990-06-26 JP JP16770890A patent/JPH0456501A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63109601A (en) * | 1986-10-28 | 1988-05-14 | Toshiba Corp | Filter |
| JPH0451603A (en) * | 1990-06-19 | 1992-02-20 | Murata Mfg Co Ltd | Dielectric filter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6060965A (en) * | 1993-12-14 | 2000-05-09 | Electronics And Telecommunications Research Institute | Dielectric resonator and filter including capacitor electrodes on a non-conductive surface |
| US6034579A (en) * | 1994-02-18 | 2000-03-07 | Murata Manufacturing Co., Ltd. | Dielectric filter of the band elimination type |
| US5614875A (en) * | 1994-07-19 | 1997-03-25 | Dae Ryun Electronics, Inc. | Dual block ceramic resonator filter having common electrode defining coupling/tuning capacitors |
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