JP3357970B2 - Coaxial filter and method of manufacturing the same - Google Patents
Coaxial filter and method of manufacturing the sameInfo
- Publication number
- JP3357970B2 JP3357970B2 JP18524295A JP18524295A JP3357970B2 JP 3357970 B2 JP3357970 B2 JP 3357970B2 JP 18524295 A JP18524295 A JP 18524295A JP 18524295 A JP18524295 A JP 18524295A JP 3357970 B2 JP3357970 B2 JP 3357970B2
- Authority
- JP
- Japan
- Prior art keywords
- center conductor
- input
- conductor
- dielectric
- outer 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 - Lifetime
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Description
【0001】[0001]
【発明の属する技術分野】本発明は同軸型フィルタおよ
びその製造方法に関し、特にマイクロ波周波数用の同軸
型フィルタおよびその製造方法に関する。The present invention relates to a coaxial filter and a method of manufacturing the same, and more particularly to a coaxial filter for microwave frequencies and a method of manufacturing the same.
【0002】[0002]
【従来の技術】図4は従来の同軸型フィルタの一例の断
面図、図5は同組立図である。2. Description of the Related Art FIG. 4 is a sectional view of an example of a conventional coaxial filter, and FIG.
【0003】この同軸型フィルタはローパスフィルタ
で、外導体50と中心導体51とで構成される。また、
外導体50は外導体ケース50aと、外導体カバー50
bの上下2分割構造となっている。そして、中心導体5
1は径の小さい高インピーダンス部52と、径の大きい
低インピーダンス部53と、入出力部54とで構成され
ている。この高インピーダンス部52と低インピーダン
ス部53とで夫々インダクタンスとキャパシタンスを実
現し、ローパスフィルタとしての機能を実現している。[0003] This coaxial filter is a low-pass filter, which comprises an outer conductor 50 and a center conductor 51. Also,
The outer conductor 50 includes an outer conductor case 50a and an outer conductor cover 50.
b has a vertically divided structure. And the center conductor 5
Reference numeral 1 denotes a high-impedance section 52 having a small diameter, a low-impedance section 53 having a large diameter, and an input / output section 54. The high impedance section 52 and the low impedance section 53 realize inductance and capacitance, respectively, and realize a function as a low-pass filter.
【0004】そして、組み立てにはまず、中心導体51
の入出力部54にコネクタ60を半田付けする。そし
て、それを外導体ケース50aに嵌め込み、外導体カバ
ー50bを被覆する。[0004] Then, the center conductor 51 is first assembled.
The connector 60 is soldered to the input / output unit 54 of FIG. Then, it is fitted into the outer conductor case 50a to cover the outer conductor cover 50b.
【0005】また、帯域外の減衰量を多く取るためには
ローパスフィルタの長さを長くする傾向にある。そこ
で、この場合には自重および振動等による中心導体51
のたわみ防止のため、中心導体51と外導体50との間
に誘電体リング55を入れることがある。図6にこの誘
電体リングの平面図および側面図を示す。In order to obtain a large amount of attenuation outside the band, the length of the low-pass filter tends to be increased. Therefore, in this case, the center conductor 51 due to its own weight and vibration is used.
In some cases, a dielectric ring 55 is inserted between the center conductor 51 and the outer conductor 50 in order to prevent deflection. FIG. 6 shows a plan view and a side view of the dielectric ring.
【0006】同図に示すように、この誘電体リング55
は円筒状に形成されている。[0006] As shown in FIG.
Is formed in a cylindrical shape.
【0007】また、特開昭56−76602号公報に中
心導体と外導体との間に誘電体リングを挟持した低域通
過ろ波器が開示されている。Japanese Patent Application Laid-Open No. 56-76602 discloses a low-pass filter in which a dielectric ring is sandwiched between a center conductor and an outer conductor.
【0008】[0008]
【発明が解決しようとする課題】しかし、中心導体51
と外導体50との間に誘電体リング55を入れると、こ
の誘電体リング55が円筒状であるため、誘電体リング
55に中心導体51を収納した後に、中心導体51とコ
ネクタ60とを半田付けすることは不可能であった。However, the center conductor 51
When the dielectric ring 55 is inserted between the dielectric ring 55 and the outer conductor 50, the dielectric ring 55 is cylindrical. After the center conductor 51 is housed in the dielectric ring 55, the center conductor 51 and the connector 60 are soldered. It was impossible to attach.
【0009】このため、コネクタ60を中心導体51に
挿入し電気的接触させる構造を用いていた。For this reason, a structure has been used in which the connector 60 is inserted into the center conductor 51 to make electrical contact therewith.
【0010】しかし、コネクタ60と中心導体51との
接触を良くするためには中心導体51の入出力部54を
すりかき状にする必要がある。図7はこの入出力部のす
りかき状部の平面図および側面図である。同図に示すよ
うに、入出力部54の端部をすりかき状(たとえば、シ
ャープペンシルのチャック部のようなもの。)に形成し
ていた。However, in order to improve the contact between the connector 60 and the center conductor 51, it is necessary to make the input / output portion 54 of the center conductor 51 scraped. FIG. 7 is a plan view and a side view of the scraped portion of the input / output unit. As shown in the drawing, the end of the input / output unit 54 is formed in a scraped shape (for example, a chuck portion of a mechanical pencil).
【0011】また、入出力部54をすりかき状にするに
は、中心導体51の材料としてリン青銅等のばね性を有
するものを使用する必要がある。しかし、このような材
料は高価でまた黄銅等の材料に比べて同じ加工でも加工
費が高かった。さらに、すりかき状に加工する工賃も高
価であった。Further, in order to make the input / output section 54 in a scraped shape, it is necessary to use a material having a spring property such as phosphor bronze as a material of the center conductor 51. However, such a material is expensive and the processing cost is higher than that of a material such as brass. Furthermore, the labor for scraping was also expensive.
【0012】そこで、本発明の目的は中心導体とコネク
タとの半田付けが可能な誘電体リング付き同軸フィルタ
を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a coaxial filter with a dielectric ring that can be soldered to a center conductor and a connector.
【0013】[0013]
【課題を解決するための手段】前記課題を解決するため
に本発明は、インピーダンス線路および入出力部からな
る中心導体と、この中心導体の外側に同軸状に設けられ
た外導体と、前記中心導体と前記外導体間に挟持される
誘電体とからなる同軸型フィルタであって、前記誘電体
の前記入出力部の位置する部分に切欠部が形成されるこ
とを特徴とする。In order to solve the above-mentioned problems, the present invention provides a center conductor comprising an impedance line and an input / output section, an outer conductor provided coaxially outside the center conductor, and A coaxial filter comprising a conductor and a dielectric sandwiched between the outer conductors, wherein a cutout is formed in a portion of the dielectric where the input / output unit is located.
【0014】[0014]
【発明の実施の形態】誘電体の入出力部の位置する部分
に切欠部を形成することにより、中心導体を誘電体内に
収納した後にその切欠部を介して入出力部とコネクタと
を半田付けすることができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS By forming a notch in a portion where an input / output portion of a dielectric is located, a center conductor is housed in a dielectric and then the input / output portion and a connector are soldered through the notch. can do.
【0015】以下、本発明の実施例について添付図面を
参照しながら説明する。図1は本発明に係る同軸型フィ
ルタの縦断面図、図2は中心導体の平面図である。な
お、従来例と同様の構成部分については同一番号を付
し、その説明を省略する。Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a longitudinal sectional view of a coaxial filter according to the present invention, and FIG. 2 is a plan view of a center conductor. Note that the same components as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.
【0016】この同軸型フィルタはローパスフィルタ
で、外導体50と中心導体51とで構成される。また、
外導体50は外導体ケース50aと、外導体カバー50
bの上下2分割構造となっている。そして、中心導体5
1は径の小さい高インピーダンス部52と、径の大きい
低インピーダンス部53と、入出力部54とで構成され
ている。この高インピーダンス部52と低インピーダン
ス部53とで夫々インダクタンスとキャパシタンスを実
現し、ローパスフィルタとしての機能を実現している。This coaxial filter is a low-pass filter, which comprises an outer conductor 50 and a center conductor 51. Also,
The outer conductor 50 includes an outer conductor case 50a and an outer conductor cover 50.
b has a vertically divided structure. And the center conductor 5
Reference numeral 1 denotes a high-impedance section 52 having a small diameter, a low-impedance section 53 having a large diameter, and an input / output section 54. The high impedance section 52 and the low impedance section 53 realize inductance and capacitance, respectively, and realize a function as a low-pass filter.
【0017】また、自重および振動等による中心導体5
1のたわみ防止のため、中心導体51と外導体50との
間に誘電体リング1を入れている。The center conductor 5 due to its own weight and vibration
The dielectric ring 1 is inserted between the center conductor 51 and the outer conductor 50 to prevent the deflection of the dielectric ring 1.
【0018】図3は誘電体リングの平面図および側面図
である。同図に示すように、誘電体リング1には、誘電
体リング1内に入出力部54を収納した場合に、誘電体
リング1の入出力部54の位置する部分に切欠部1a,
1bを形成した。FIG. 3 is a plan view and a side view of the dielectric ring. As shown in the drawing, when the input / output unit 54 is housed in the dielectric ring 1, the notch 1 a is formed in the portion of the dielectric ring 1 where the input / output unit 54 is located.
1b was formed.
【0019】従って、誘電体リング1内に入出力部54
を収納した後に、この切欠部1a,1bを介して入出力
部54とコネクタ60とを半田付けすることができる。Therefore, the input / output unit 54 is provided in the dielectric ring 1.
After being stored, the input / output unit 54 and the connector 60 can be soldered through the notches 1a and 1b.
【0020】次に、この同軸型フィルタの製造方法につ
いて説明する。Next, a method of manufacturing the coaxial filter will be described.
【0021】(1)第1工程。誘電体リング1に中心導
体51を挿通する。(1) First step. The center conductor 51 is inserted through the dielectric ring 1.
【0022】(2)第2工程。中心導体51を挿通した
誘電体リング1を外導体ケース50aに嵌め込む。(2) Second step. The dielectric ring 1 having the center conductor 51 inserted therein is fitted into the outer conductor case 50a.
【0023】(3)第3工程。誘電体リング1の両側か
らコネクタ60を差し込む。(3) Third step. The connectors 60 are inserted from both sides of the dielectric ring 1.
【0024】(4)第4工程。誘電体リング1の切欠部
1a,1bを介して入出力部54とコネクタ60とを半
田付けする。(4) Fourth step. The input / output unit 54 and the connector 60 are soldered through the cutouts 1a and 1b of the dielectric ring 1.
【0025】(5)第5工程。中心導体51を外導体カ
バー50bで被覆する。(5) Fifth step. The center conductor 51 is covered with the outer conductor cover 50b.
【0026】(6)第6工程。外導体カバー50bとコ
ネクタ60とをビス止めする。(不図示)なお、切欠部
1a,1b、または切欠部1a,1bを介して入出力部
54にインピーダンス微調整用のビス等を設定すること
が可能である。(6) Sixth step. The outer conductor cover 50b and the connector 60 are screwed. (Not shown) It is possible to set a screw or the like for fine impedance adjustment in the input / output unit 54 through the cutouts 1a and 1b or the cutouts 1a and 1b.
【0027】[0027]
【発明の効果】本発明によれば、中心導体と前記外導体
間に挟持される誘電体に切欠部を形成したため、この切
欠部を介して中心導体の入出力部とコネクタとを半田付
けすることができる。According to the present invention, since the notch is formed in the dielectric material sandwiched between the center conductor and the outer conductor, the input / output portion of the center conductor and the connector are soldered through the notch. be able to.
【0028】従って、入出力部をすりかき状にする加工
が不要となり、また中心導体51の材料として黄銅等の
比較的安価な材料を使用することができるため、加工
費、材料費ともに減少させることができる。Therefore, it is not necessary to make the input / output portion into a scraped shape, and a relatively inexpensive material such as brass can be used as the material of the center conductor 51. Therefore, both the processing cost and the material cost are reduced. be able to.
【図1】本発明に係る同軸型フィルタの縦断面図であ
る。FIG. 1 is a longitudinal sectional view of a coaxial filter according to the present invention.
【図2】同フィルタの中心導体の平面図である。FIG. 2 is a plan view of a center conductor of the filter.
【図3】同フィルタの誘電体リングの平面図および側面
図である。FIG. 3 is a plan view and a side view of a dielectric ring of the filter.
【図4】従来の同軸型フィルタの一例の縦面図である。FIG. 4 is a longitudinal view of an example of a conventional coaxial filter.
【図5】同フィルタの組立図である。FIG. 5 is an assembly view of the same filter.
【図6】同フィルタの誘電体リングの平面図および側面
図FIG. 6 is a plan view and a side view of a dielectric ring of the filter.
【図7】同フィルタの入出力部のすりかき状部の平面図
および側面図である。FIG. 7 is a plan view and a side view of a scraped portion of an input / output unit of the filter.
1 誘電体リング 1a,1b 切欠部 50 外導体 50a 外導体ケース 50b 外導体カバー 51 中心導体 52 高インピーダンス部 53 低インピーダンス部 54 入出力部 DESCRIPTION OF SYMBOLS 1 Dielectric ring 1a, 1b Notch 50 Outer conductor 50a Outer conductor case 50b Outer conductor cover 51 Central conductor 52 High impedance part 53 Low impedance part 54 Input / output part
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) H01P 1/202 H01P 11/00 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) H01P 1/202 H01P 11/00
Claims (4)
なる中心導体と、この中心導体の外側に同軸状に設けら
れた外導体と、前記中心導体と前記外導体間に挟持され
る誘電体とからなる同軸型フィルタであって、前記誘電
体の前記入出力部の位置する部分に切欠部が形成される
ことを特徴とする同軸型フィルタ。1. A center conductor comprising an impedance line and an input / output unit, an outer conductor provided coaxially outside the center conductor, and a dielectric sandwiched between the center conductor and the outer conductor. A coaxial filter, wherein a cutout is formed in a portion of the dielectric body where the input / output unit is located.
を介して半田付けされることを特徴とする請求項1記載
の同軸型フィルタ。2. The coaxial filter according to claim 1, wherein a connector is soldered to said input / output unit via said cutout.
に形成されることを特徴とする請求項1または2記載の
同軸型フィルタ。3. The coaxial filter according to claim 1, wherein the outer conductor is formed so as to be separable into two members in a coaxial direction.
なる中心導体と、この中心導体の外側に同軸状に設けら
れ、同軸方向に2体に分離可能に形成される外導体と、
前記中心導体と前記外導体間に挟持され、前記入出力部
の位置する部分に切欠部が形成される誘電体とからな
り、 前記誘電体に前記中心導体を挿通する工程と、前記中心
導体を挿通した誘電体を2体に分離した前記外導体の片
方に固定する工程と、前記片方の外導体に固定された誘
電体に挿通された中心導体に前記切欠分を介してコネク
タを半田付けする工程と、この半田付け後の前記誘電体
に前記外導体の他方を被覆する工程とからなることを特
徴とする同軸型フィルタの製造方法。4. A center conductor comprising an impedance line and an input / output section, and an outer conductor provided coaxially outside the center conductor and formed so as to be separable into two members in a coaxial direction.
A dielectric material sandwiched between the center conductor and the outer conductor, the dielectric material having a cutout formed in a portion where the input / output unit is located; and Fixing the inserted dielectric to one of the outer conductors separated into two parts, and soldering the connector to the center conductor inserted through the dielectric fixed to the one outer conductor via the cutout portion And a step of coating the dielectric after soldering with the other of the outer conductors.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18524295A JP3357970B2 (en) | 1995-07-21 | 1995-07-21 | Coaxial filter and method of manufacturing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18524295A JP3357970B2 (en) | 1995-07-21 | 1995-07-21 | Coaxial filter and method of manufacturing the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0936606A JPH0936606A (en) | 1997-02-07 |
JP3357970B2 true JP3357970B2 (en) | 2002-12-16 |
Family
ID=16167381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18524295A Expired - Lifetime JP3357970B2 (en) | 1995-07-21 | 1995-07-21 | Coaxial filter and method of manufacturing the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3357970B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110277614A (en) * | 2019-06-08 | 2019-09-24 | 扬州江嘉科技有限公司 | A kind of medium coaxial low pass filter with transmission zero |
-
1995
- 1995-07-21 JP JP18524295A patent/JP3357970B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0936606A (en) | 1997-02-07 |
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