JPS5942725Y2 - Distributed constant filter - Google Patents
Distributed constant filterInfo
- Publication number
- JPS5942725Y2 JPS5942725Y2 JP7175379U JP7175379U JPS5942725Y2 JP S5942725 Y2 JPS5942725 Y2 JP S5942725Y2 JP 7175379 U JP7175379 U JP 7175379U JP 7175379 U JP7175379 U JP 7175379U JP S5942725 Y2 JPS5942725 Y2 JP S5942725Y2
- Authority
- JP
- Japan
- Prior art keywords
- distributed constant
- line
- center conductor
- constant filter
- conductor
- 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.)
- Expired
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Description
【考案の詳細な説明】
本考案は、誘電体を装荷した共振器を有する分布定数形
フィルタに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a distributed constant filter having a resonator loaded with a dielectric material.
一端を短絡、他端を開放とした長さがλ/4(λ:波長
)の線路は共振器として動作し、このような共振器を複
数個並列に配置して適当な手段で共振器間を結合させた
分布定数形フィルタは小形であり、くし形フィルタとし
て知られている。A line with a length of λ/4 (λ: wavelength) with one end short-circuited and the other end open operates as a resonator, and by arranging multiple such resonators in parallel and connecting them by appropriate means. A distributed constant filter that combines these is small in size and is known as a comb filter.
このような分布定数形フィルタはとくにマイクロ波帯で
広く用いられている。Such distributed constant type filters are widely used especially in the microwave band.
さらに、小型化を目的として線路に比誘電率の大きい誘
電体を装荷するとともに線路の開放端に中心周波数調整
用の容量を設けて、小型化及び特性の改善を図った分布
定数形フィルタが本出願人より提案されている。Furthermore, for the purpose of miniaturization, the line is loaded with a dielectric material with a high relative permittivity, and a capacitor for adjusting the center frequency is provided at the open end of the line, thereby making the distributed constant filter more compact and improving its characteristics. Proposed by the applicant.
第1図及び第2図は、この種の分布定数形フィルタの基
本的構成を示す。FIGS. 1 and 2 show the basic configuration of this type of distributed constant filter.
これらの図において、箱型導体ケース1内には、開放端
が円板状に形成された線路2の周囲に誘電体3を装荷し
たTEMモード共振器4が複数個縦続配置され、箱型導
体ケース1の両端面には入出力用の同軸接栓5.6が設
けられる。In these figures, in a box-shaped conductor case 1, a plurality of TEM mode resonators 4 loaded with a dielectric material 3 are arranged in cascade around a line 2 whose open end is formed into a disk shape. Coaxial connectors 5 and 6 for input and output are provided on both end faces of the case 1.
一方、箱型導体ケース1の上面部10には、前記線路2
の開放端と対向する円板状の容量電極11が複数個配置
される。On the other hand, the upper surface part 10 of the box-shaped conductor case 1 has the line 2
A plurality of disc-shaped capacitor electrodes 11 are arranged facing the open end of the capacitor electrode 11 .
ところで、TEMモード共振器4においては、線路2と
誘電体3との密着度合が共振周波数に鋭敏に影響するが
、実際には線路2及び誘電体3の双方共に加工公差があ
り常にぴったり密着させることは不可能であった。By the way, in the TEM mode resonator 4, the degree of adhesion between the line 2 and the dielectric 3 has a sharp effect on the resonant frequency, but in reality, both the line 2 and the dielectric 3 have processing tolerances, so they must always be in close contact with each other. That was impossible.
このため、各共振器4の中心周波数のばらつきが大きく
なり、調整に手間がかかるきらいがあった。For this reason, the center frequency of each resonator 4 varies greatly, and adjustment tends to be time-consuming.
本考案は、上記の点に鑑み、各共振器の中心周波数のば
らつきの減少を図り、調整作業を容易にした分布定数形
フィルタを提供しようとするものでるる。In view of the above-mentioned points, the present invention aims to reduce variations in the center frequency of each resonator and to provide a distributed constant filter that facilitates adjustment work.
以下、本考案に係る分布定数形フィルタの実施例を図面
に従って説明する。Embodiments of the distributed constant filter according to the present invention will be described below with reference to the drawings.
第3図において、線路2は誘電体3が装荷される中心導
体20と、これと別体の円板状容量電極部21とから成
る。In FIG. 3, the line 2 consists of a center conductor 20 loaded with a dielectric 3 and a disk-shaped capacitive electrode section 21 separate from the center conductor 20.
中心導体20は、第4図に示す如く、下部の短絡端以外
は中空パイプ状であって、この中空パイプ状部分に高周
波電流を妨げないように軸方向に割22が形成され、下
部の短絡端にはかしめ部23が一体に形成される。As shown in FIG. 4, the center conductor 20 has a hollow pipe shape except for the short-circuited end at the lower part, and a split 22 is formed in the axial direction in this hollow pipe-shaped part so as not to impede the high-frequency current. A caulking portion 23 is integrally formed at the end.
一方、円板状容量電極部21には凹部24及び取付突2
5が形成され、箱型導体ケース1には凹部26及び取付
突27が形成される。On the other hand, the disc-shaped capacitive electrode part 21 has a recess 24 and a mounting protrusion 2.
5 is formed, and a recess 26 and a mounting protrusion 27 are formed in the box-shaped conductor case 1.
そして、線路2は、中心導体20に誘電体3を嵌めた状
態でかしめ部23を箱型導体ケース1の取付突27に通
してかしめ部23をかしめ加工するとともに、中心導体
20の先端を円板状容量電極部21の取付突25に通し
、その中心導体先端部を折返しかしめ加工することによ
り、箱型導体ケース1に固定される。Then, the line 2 is formed by passing the caulking part 23 through the mounting protrusion 27 of the box-shaped conductor case 1 with the dielectric 3 fitted to the center conductor 20, and caulking the caulking part 23, and rounding the tip of the central conductor 20. The center conductor is fixed to the box-shaped conductor case 1 by passing it through the mounting protrusion 25 of the plate-shaped capacitor electrode part 21 and folding and caulking the tip of the center conductor.
それから、中心導体20の内側に弾性を有するプラスチ
ック等のピン28が圧入され、中心導体20は割22を
有しているからこのピン28の圧入により径方向に押し
広げられ誘電体3の内周面に密着する。Then, a pin 28 made of elastic plastic or the like is press-fitted inside the center conductor 20. Since the center conductor 20 has a split 22, the press-fitting of the pin 28 causes it to be expanded in the radial direction, and the inner periphery of the dielectric 3 is expanded. Closely adheres to the surface.
なお、その他の構成は第1図及び第2図と同様である。Note that the other configurations are the same as those in FIGS. 1 and 2.
上記実施例によれば、線路2の中心導体20を割22を
有するパイプ状に形成1−1この中心導体20の内側に
弾性を具備したピン28を圧入して中心導体20を誘電
体3に密着させることができるので、中心導体20と誘
電体3との密着度合がまちまちであることに起因する各
共振器4の中心周波数のばらつきを減少させることが可
能である。According to the above embodiment, the center conductor 20 of the line 2 is formed into a pipe shape having a split 22 1-1. An elastic pin 28 is press-fitted inside the center conductor 20, and the center conductor 20 is attached to the dielectric 3. Since they can be brought into close contact with each other, it is possible to reduce variations in the center frequency of each resonator 4 due to varying degrees of contact between the center conductor 20 and the dielectric 3.
このため、夫々の共振器4の調整を容易に行うことがで
きる。Therefore, each resonator 4 can be adjusted easily.
また、誘電体3の寸法公差をゆるめることができ、それ
だけ加工精度を下げることが可能であるから製造コスト
の低減も可能である。Furthermore, the dimensional tolerance of the dielectric 3 can be relaxed, and the processing accuracy can be lowered accordingly, so that manufacturing costs can also be reduced.
なお、中心導体20への円板状容量電極部21の固定は
、かしめ加工の他、溶接、はんだ付は等によって実行可
能であり、箱型導体ケース1への中心導体20の固定も
、かしめ加工の他、溶接、螺子止め等で実行できる。Note that the disk-shaped capacitive electrode portion 21 can be fixed to the center conductor 20 by welding, soldering, etc. in addition to caulking, and the center conductor 20 can also be fixed to the box-shaped conductor case 1 by caulking. In addition to processing, it can be performed by welding, screwing, etc.
また、割22の個数は適宜増減可能である。Further, the number of splits 22 can be increased or decreased as appropriate.
叙上のように、本考案によれば、夫々の共振器の中心周
波数のばらつきを減じ、調整を容易に行えるようにした
分布定数形フィルタを得る。As described above, according to the present invention, a distributed constant filter is obtained in which variations in the center frequency of each resonator are reduced and adjustment can be easily performed.
第1図は基本的な分布定数形フィルタを示す縦断面図、
第2図は箱型導体ケースの上面部を外1−た状態の平面
図、第3図は本考案に係る分布定数形フィルタの実施例
を示す部分断面図、第4図は中心導体を示す斜視図であ
る。
1・・・・・・箱型導体ケース、2・・・・・・線路、
3・・・・・・誘電体、4・・・・・・TEMモード共
振器、10・・・・・・上面部、11・・・・・・容量
電極、20・・・・・・中心導体、21・・・・・・円
板状容量電極部、22・・・・・・割、23・・・・・
・かしめ部、24.26・・・・・・凹部、25.27
・・・・・・取付突、2B・・・・・・ピン。Figure 1 is a vertical cross-sectional view showing a basic distributed constant type filter.
Fig. 2 is a plan view with the top of the box-shaped conductor case removed; Fig. 3 is a partial sectional view showing an embodiment of the distributed constant filter according to the present invention; Fig. 4 shows the center conductor. FIG. 1... Box-shaped conductor case, 2... Line,
3...Dielectric material, 4...TEM mode resonator, 10...Top part, 11...Capacitive electrode, 20...Center Conductor, 21...disc-shaped capacitor electrode section, 22...split, 23...
・Caulking part, 24.26...Concave part, 25.27
...Mounting protrusion, 2B...pin.
Claims (1)
とともに該線路の開放端に容量を設けた共振器を有する
分布定数形フィルタにおいて、前記線路の中心導体の少
くとも一部を割を右するパイプ状に形成し、その中心導
体内側に弾性を有するピンを圧入したことを特徴とする
分布定数形フィルタ。In a distributed constant filter having a resonator in which a dielectric material is loaded on a line short-circuited at one end and open at the other end, and a capacitance is provided at the open end of the line, at least a part of the center conductor of the line is divided. A distributed constant type filter characterized in that it is formed into a pipe shape with an elastic pin press-fitted inside the central conductor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7175379U JPS5942725Y2 (en) | 1979-05-30 | 1979-05-30 | Distributed constant filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7175379U JPS5942725Y2 (en) | 1979-05-30 | 1979-05-30 | Distributed constant filter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55173601U JPS55173601U (en) | 1980-12-12 |
JPS5942725Y2 true JPS5942725Y2 (en) | 1984-12-15 |
Family
ID=29305437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7175379U Expired JPS5942725Y2 (en) | 1979-05-30 | 1979-05-30 | Distributed constant filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5942725Y2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5917606U (en) * | 1982-07-26 | 1984-02-02 | 日本電業工作株式会社 | Components of dielectric resonator |
JPS59154906U (en) * | 1983-03-31 | 1984-10-17 | 株式会社村田製作所 | Terminal structure of dielectric coaxial resonator |
JPS59201502A (en) * | 1983-04-28 | 1984-11-15 | Murata Mfg Co Ltd | Connecting rod and its fixing method |
-
1979
- 1979-05-30 JP JP7175379U patent/JPS5942725Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS55173601U (en) | 1980-12-12 |
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