JPH02241203A - Coaxial resonator and filter using it - Google Patents
Coaxial resonator and filter using itInfo
- Publication number
- JPH02241203A JPH02241203A JP6242089A JP6242089A JPH02241203A JP H02241203 A JPH02241203 A JP H02241203A JP 6242089 A JP6242089 A JP 6242089A JP 6242089 A JP6242089 A JP 6242089A JP H02241203 A JPH02241203 A JP H02241203A
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- electrode
- external conductor
- coaxial resonator
- face
- 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 45
- 239000003990 capacitor Substances 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 abstract description 10
- 229910000679 solder Inorganic materials 0.000 abstract description 9
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 description 9
- 239000010970 precious metal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、上下方向に貫通孔を有する筒体を用い、そ
の内外に内部導体と外部導体を形成した同軸共振器およ
びそれを用いたフィルタに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a coaxial resonator using a cylindrical body having vertically extending through holes and having an inner conductor and an outer conductor formed inside and outside the cylindrical body, and a filter using the same. It is.
従来の技術
従来この種の同軸共振器は、第４図に示すような構成で
あった。第４図において、１９は上下方向の貫通孔２Ｑ
を有する筒体である。筒体１９の外周部には、外部導体
２１が設けられている。そして貫通孔２０には、内部導
体２２が設けられている。また、誘電体１９の開放端面
には、円形の電極２３が設けられ、この電極２３と内部
導体２２とは電気的に接続されている。2. Description of the Related Art Conventionally, this type of coaxial resonator has a structure as shown in FIG. In Fig. 4, 19 is a vertical through hole 2Q.
It is a cylindrical body with An outer conductor 21 is provided on the outer periphery of the cylinder 19 . The through hole 20 is provided with an internal conductor 22 . Further, a circular electrode 23 is provided on the open end surface of the dielectric 19, and the electrode 23 and the internal conductor 22 are electrically connected.
発明が解決しようとする課題
従来のものにおいて、共振周波数を低下させるにはよく
知られているように誘電体１９を長くしなければならな
い。しかしながら、誘電体１９を長くすると、大型化し
て実装時に大きなスペースを必要とするだけでなく、内
部導体２２と外部導体２１を形成する金属面積も多く必
要になって貴金属量の増加によって高価になってしまう
問題があった。Problems to be Solved by the Invention In conventional devices, in order to lower the resonant frequency, the dielectric 19 must be made longer, as is well known. However, if the dielectric 19 is made longer, it not only becomes larger and requires a larger space for mounting, but also requires a larger area of metal to form the inner conductor 22 and the outer conductor 21, which increases the cost due to the increased amount of precious metal. There was a problem.
そこで本発明は、コンパクトで安価なフィルタ３／＼ を提供する目的とするものである。Therefore, the present invention provides a compact and inexpensive filter 3/\ The purpose is to provide
課題を解決するだめの手段
そして、この目的を達成するために本発明は、筒体の天
面あるいは底面の開放端面に設けた電極の一部を外部導
体の一部除去部に延長したものである。Means for Solving the Problems And in order to achieve this object, the present invention extends a part of the electrode provided on the open end surface of the top or bottom of the cylindrical body to the part where the outer conductor is partially removed. be.
作用
上記手段によれば、電極からの延長部がインダクタンス
成分となるので、きわめて容易に共振周波数を低下させ
ることができる。また、筒体そのものの長さは従来と同
じものを用いればよいので、コンパクトなものとなり、
しかも貴金属量も増加させる必要もなく、結果的に安価
々ものとなる。Effect: According to the above means, since the extension from the electrode becomes an inductance component, the resonant frequency can be lowered very easily. In addition, the length of the cylinder itself can be the same as before, making it compact.
Furthermore, there is no need to increase the amount of precious metals, resulting in an inexpensive product.
実施例
第１図、１は四角′柱の誘電体からなる筒体であり、こ
の筒体１には上下方向の円柱状の貫通孔２が設けられて
いる。寸た、筒体１の外周面には、外部導体３が設けら
れている。ただし、−面の外部導体３の一部３ａだけは
、上方から下方に向けて凹状に除去されている。Embodiment In FIG. 1, reference numeral 1 is a rectangular cylinder made of dielectric material, and this cylinder 1 is provided with a cylindrical through hole 2 in the vertical direction. An external conductor 3 is provided on the outer peripheral surface of the cylindrical body 1. However, only a portion 3a of the outer conductor 3 on the negative side is removed in a concave shape from above to below.
また貫通孔２には、内部導体４が設けられている。さら
に、筒体１０天而脣たけ底面の開放端面には、略円形の
電極５が設けられており、その内周部は、内部導体４と
電気的に接続され、外周部の一部は、前記外部導体３の
除去部３ａ−１で延長されている。Further, the through hole 2 is provided with an internal conductor 4 . Further, a substantially circular electrode 5 is provided on the open end surface of the bottom surface of the cylinder 10, the inner circumference of which is electrically connected to the internal conductor 4, and a part of the outer circumference of the electrode 5. It is extended at the removed portion 3a-1 of the outer conductor 3.
以上の構成で電極５の延長部は、インダクタンス成分と
して働くので、共振周波数を低下させることができる。With the above configuration, the extension of the electrode 5 acts as an inductance component, so that the resonance frequency can be lowered.
第２図は、本発明の同軸共振器を用いたフィルタの一実
施例の構成を示すものである。６は同軸共振器であり、
この同軸共振器６の一面の外部導体３の一部除去された
部分３１Ｌには電極６がある。FIG. 2 shows the configuration of an embodiment of a filter using a coaxial resonator of the present invention. 6 is a coaxial resonator;
An electrode 6 is provided on a partially removed portion 31L of the outer conductor 3 on one side of the coaxial resonator 6.
この同軸共振器６を２個並列に並べて、前記同軸共振器
６の外部導体３の除去部３ａ分に延長されている電極５
同志をハンダ又は導電接着剤にてコンデンサ了で結合し
ている。また、同軸共振器６の内部導体４には、ピン８
がハンダ又は導電接着剤にて電気的に接続され、前記同
軸共振器らの外部導体３は、それぞれシールド板９とハ
ンダ又は５′＼−・
導電接着剤にて電気的に接続されている。Two coaxial resonators 6 are arranged in parallel, and an electrode 5 extends to the removed portion 3a of the outer conductor 3 of the coaxial resonator 6.
The comrades are connected with a capacitor using solder or conductive adhesive. Further, a pin 8 is attached to the internal conductor 4 of the coaxial resonator 6.
are electrically connected by solder or conductive adhesive, and the outer conductors 3 of the coaxial resonators are electrically connected to the shield plate 9, respectively, by solder or conductive adhesive.
以上の構成で、同軸共振器の長さを変えることなく、フ
ィルタの共振周波数を下げることができることとなる。With the above configuration, the resonant frequency of the filter can be lowered without changing the length of the coaxial resonator.
しかも、従来のフィルタと比べ同軸共振器６０間にコン
デンサ７を配置しているので、フィルタを小型化するこ
とができることとなる。Moreover, since the capacitor 7 is disposed between the coaxial resonators 60 compared to conventional filters, the filter can be made smaller.
第３図は、本発明の同軸共振器を用いたフィルタの他の
実施例の構成を示すものである。６は同軸共振器であシ
、この同軸共振器６の一面の外部導体３の一部除去され
た部分３１Ｌに電極５がある。FIG. 3 shows the structure of another embodiment of a filter using a coaxial resonator of the present invention. 6 is a coaxial resonator, and an electrode 5 is provided on a portion 31L of one surface of the coaxial resonator 6 where a portion of the outer conductor 3 is removed.
この同軸共振器６を２個並列に並べ、外部導体３の除去
部３＆分に延長されている電極５にハンダ又は導電接着
剤にて電気的に接続されているピン１０同志を、誘電体
基板１１上に印刷した導体にハンダ又は導電接着剤にて
結合する。また、誘電体基板１１上に印刷した導体には
、ピン８がハンダ又は導電接着剤にて電気的に接続され
、前記同軸共振器６の外部導体３はシールド板９と・・
ンダ又は導電接着剤にて電気的に接続されている。Two coaxial resonators 6 are arranged in parallel, and pins 10 electrically connected to the electrode 5 extending to the removed portion 3 & of the external conductor 3 with solder or conductive adhesive are connected to the dielectric substrate. It is bonded to the conductor printed on 11 using solder or conductive adhesive. Further, pins 8 are electrically connected to the conductor printed on the dielectric substrate 11 with solder or conductive adhesive, and the outer conductor 3 of the coaxial resonator 6 is connected to the shield plate 9...
They are electrically connected using conductive glue or conductive adhesive.
６へ一７′
また２個並列に並んでいる同軸共振器６の外部導体３同
志は、ハンダ又は導電接着剤にて電気的に接続されてい
る。6 to 7' The outer conductors 3 of the two coaxial resonators 6 arranged in parallel are electrically connected to each other by solder or conductive adhesive.
以上の構成で、同軸共振器の長さを変えることなく、共
振周波数を下げることができることと々る。しかも、天
面又は底面に誘電体基板を設けていた従来のフィルタに
対して、同軸共振器６の一面の外部導体３の一部除去部
３ａ分に延長されている電極５と誘電体基板１１をピン
８でハンダ又は導電接着剤にて電気的に接続しているの
で、フィルタの同軸共振器の長さ方向を短かくすること
ができ、小型化することができる。さらに、フィルタを
寝かせて実装する場合の床面積を小さくすることができ
る。With the above configuration, the resonant frequency can be lowered without changing the length of the coaxial resonator. Furthermore, unlike conventional filters in which a dielectric substrate is provided on the top or bottom surface, the electrode 5 and the dielectric substrate 11 are extended to cover the portion 3a of the outer conductor 3 on one side of the coaxial resonator 6. Since they are electrically connected with pins 8 using solder or conductive adhesive, the length direction of the coaxial resonator of the filter can be shortened and the filter can be made smaller. Furthermore, the floor space required when mounting the filter lying down can be reduced.
発明の効果
本発明によれば、電極からの延長部がインダクタンス成
分となるので、きわめて容易に共振周波数を低下させる
ことができる。また、誘電体そのものの長さは従来と同
じ程度のものを用いればよいので、コンパクトなものと
なシ、しかも導体面７′＼〜／
積も増加させる必要もなく、結果的に貴金属の使用量も
少なくすみ安価なものとなる。Effects of the Invention According to the present invention, since the extension from the electrode becomes an inductance component, the resonant frequency can be lowered very easily. In addition, the length of the dielectric itself can be the same as conventional ones, so it can be made compact, and there is no need to increase the area of the conductor surface, which results in the use of precious metals. The quantity is small and the product is inexpensive.
第１図ａ −ｄは本発明の一実施例の上面図、側面図、
正面図、斜視図、第２図ａ−ａは本発明の同軸共振器を
用いたフィルタの一実施例の上面図。
側面図、正面図、第３図ａ〜Ｃは本発明の同軸共振器を
用いたフィルタの他の実施例の正面図、側面図、底面図
、第４図ａ −ｃは従来例の上面図。
側面図、斜視図である。
１・・・筒体、２・・・貫通孔、３・・・・外部導体、
４・・・・・内部導体、５・・・・電極、６・・・・・
同軸共振器、７・・・・・コンデンサ、８・・・・・ビ
ン、９・・・・・シールド板。
代理人の氏名 弁理士 粟 野 重 孝 ほか１基量
図
／−−一筒体
？−貫通名
３−一−ダト 部 導 イイ（
４−内部や導体
５− 電極
憾
＼０Figures 1a-d are top and side views of an embodiment of the present invention;
A front view, a perspective view, and FIG. 2 a-a are top views of an embodiment of a filter using a coaxial resonator of the present invention. 3a to 3C are front views, side views, and bottom views of other embodiments of the filter using the coaxial resonator of the present invention, and FIGS. 4A to 4C are top views of the conventional example. . They are a side view and a perspective view. 1... Cylindrical body, 2... Through hole, 3... Outer conductor,
4...Inner conductor, 5...Electrode, 6...
Coaxial resonator, 7...capacitor, 8...bin, 9...shield plate. Agent's name: Patent attorney Shigetaka Awano and 1 other base figure/--one cylinder? -Through name 3-1-Dato part conductor (4-inside or conductor 5-electrode ＼＼0
Claims (3)
前記内部導体と電気的に接続された電極を設け、前記電
極の一部を前記外部導体の一部除去部に延長した同軸共
振器。(1) On the open end surface of the cylinder having an inner conductor and an outer conductor,
A coaxial resonator comprising an electrode electrically connected to the inner conductor, and a part of the electrode extending to a portion where a portion of the outer conductor is removed.
くとも２個以上並列に並べ、外部導体の一部除去部に延
長した電極部同志を、コンデンサにて結合したフィルタ
。(2) A filter in which at least two or more coaxial resonators according to claim 1 are arranged in parallel, and electrode portions extending to a portion where a portion of the external conductor is removed are coupled together by a capacitor.
誘電体基板上に印刷した導体で結合した特許請求の範囲
第２項に記載のフィルタ。(3) The electrode parts extended to the partially removed part of the external conductor,
The filter according to claim 2, which is coupled by a conductor printed on a dielectric substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6242089A JPH02241203A (en) | 1989-03-15 | 1989-03-15 | Coaxial resonator and filter using it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6242089A JPH02241203A (en) | 1989-03-15 | 1989-03-15 | Coaxial resonator and filter using it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02241203A true JPH02241203A (en) | 1990-09-25 |
Family
ID=13199645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6242089A Pending JPH02241203A (en) | 1989-03-15 | 1989-03-15 | Coaxial resonator and filter using it |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02241203A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5327110A (en) * | 1992-09-01 | 1994-07-05 | Siemens Matsushita Comp. Gmbh & Co. Kg | Ceramic coaxial resonator |
| EP0635897A1 (en) * | 1993-07-23 | 1995-01-25 | NGK Spark Plug Co. Ltd. | Dielectric filter |
| EP0688059A1 (en) * | 1994-06-16 | 1995-12-20 | Murata Manufacturing Co., Ltd. | Dielectric filter |
| US5912603A (en) * | 1995-12-12 | 1999-06-15 | Murata Manufacturing Co., Ltd. | Dielectric filter having a longitudinal through-hole and a transverse connection conductor |
| US6020800A (en) * | 1996-06-10 | 2000-02-01 | Murata Manufacturing Co., Ltd. | Dielectric waveguide resonator, dielectric waveguide filter, and method of adjusting the characteristics thereof |
| US6191668B1 (en) | 1992-06-26 | 2001-02-20 | Sanyo Electric Co., Ltd. | Coaxial resonator and dielectric filter using the same |
| FR2802708A1 (en) * | 1999-12-16 | 2001-06-22 | Murata Manufacturing Co | Microwave/high frequency non reciprocal isolator/circulator construction having outer magnetic yokes with permanent magnet and capacitors magnetic element with central conductor held. |
-
1989
- 1989-03-15 JP JP6242089A patent/JPH02241203A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6191668B1 (en) | 1992-06-26 | 2001-02-20 | Sanyo Electric Co., Ltd. | Coaxial resonator and dielectric filter using the same |
| US5327110A (en) * | 1992-09-01 | 1994-07-05 | Siemens Matsushita Comp. Gmbh & Co. Kg | Ceramic coaxial resonator |
| EP0635897A1 (en) * | 1993-07-23 | 1995-01-25 | NGK Spark Plug Co. Ltd. | Dielectric filter |
| EP0688059A1 (en) * | 1994-06-16 | 1995-12-20 | Murata Manufacturing Co., Ltd. | Dielectric filter |
| US6054910A (en) * | 1995-12-12 | 2000-04-25 | Murata Manufacturing Co., Ltd. | Dielectric filter having an inner conductor with two open-circuited inner ends |
| US6023208A (en) * | 1995-12-12 | 2000-02-08 | Murata Manufacturing Co., Ltd. | Dielectric filter |
| US5912603A (en) * | 1995-12-12 | 1999-06-15 | Murata Manufacturing Co., Ltd. | Dielectric filter having a longitudinal through-hole and a transverse connection conductor |
| US6020800A (en) * | 1996-06-10 | 2000-02-01 | Murata Manufacturing Co., Ltd. | Dielectric waveguide resonator, dielectric waveguide filter, and method of adjusting the characteristics thereof |
| US6255921B1 (en) * | 1996-06-10 | 2001-07-03 | Murata Manufacturing Co., Ltd. | Dielectric waveguide resonator, dielectric waveguide filter, and method of adjusting the characteristics thereof |
| US6281764B1 (en) * | 1996-06-10 | 2001-08-28 | Murata Manufacturing Co., Ltd. | Dielectric waveguide resonator, dielectric waveguide filter, and method of adjusting the characteristics thereof |
| US6346867B2 (en) * | 1996-06-10 | 2002-02-12 | Murata Manufacturing Co., Ltd. | Dielectric waveguide resonator, dielectric waveguide filter, and method of adjusting the characteristics thereof |
| US6356170B1 (en) * | 1996-06-10 | 2002-03-12 | Murata Manufacturing Co., Ltd. | Dielectric waveguide resonator, dielectric waveguide filter, and method of adjusting the characteristics thereof |
| FR2802708A1 (en) * | 1999-12-16 | 2001-06-22 | Murata Manufacturing Co | Microwave/high frequency non reciprocal isolator/circulator construction having outer magnetic yokes with permanent magnet and capacitors magnetic element with central conductor held. |
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