JPH0794917A - Connection structure of coaxial connector - Google Patents
Connection structure of coaxial connectorInfo
- Publication number
- JPH0794917A JPH0794917A JP23528293A JP23528293A JPH0794917A JP H0794917 A JPH0794917 A JP H0794917A JP 23528293 A JP23528293 A JP 23528293A JP 23528293 A JP23528293 A JP 23528293A JP H0794917 A JPH0794917 A JP H0794917A
- Authority
- JP
- Japan
- Prior art keywords
- coaxial
- coaxial connector
- connection structure
- connector
- strip line
- 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.)
- Withdrawn
Links
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、同軸コネクタの接続構
造に関し、特に同軸ラインからマイクロストリップライ
ン基板に、接続される際のインピーダンス整合を改良し
た同軸コネクタの接続構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial connector connection structure, and more particularly to a coaxial connector connection structure with improved impedance matching when connecting from a coaxial line to a microstrip line substrate.
【０００２】[0002]
【従来の技術】従来、この種の同軸コネクタの接続構造
は図２に示すように、同軸コネクタ１からシールドケー
ス４の同軸部７を介して中心導体３が基板６上のストリ
ップライン５に接続される構造になっている。ここで同
軸部７は同軸コネクタの中心導体３と外部導体との間で
ある高周波周波数に対して所定インピーダンスを有して
いる。一方ストリップライン５とシールドケース４（接
地）の基板６との間であるインピーダンスを有してお
り、この両者のインピーダンス整合をとるように同軸部
７が設計されているが、同軸部７のインピーダンスに誘
導性インダクタンスが残留していた。2. Description of the Related Art Conventionally, as shown in FIG. 2, a connection structure of a coaxial connector of this type is such that a central conductor 3 is connected to a strip line 5 on a substrate 6 from a coaxial connector 1 through a coaxial portion 7 of a shield case 4. The structure is such that Here, the coaxial portion 7 has a predetermined impedance with respect to a high frequency which is between the center conductor 3 of the coaxial connector and the outer conductor. On the other hand, the coaxial line 7 has an impedance between the strip line 5 and the substrate 6 of the shield case 4 (ground), and the coaxial portion 7 is designed so as to achieve impedance matching between the two. Inductive inductance remained in the.
【０００３】[0003]
【発明が解決しようとする課題】この従来の同軸コネク
タの同軸部では、高周波周波数に対して、誘導性インダ
クタンス成分が生ずるので、同軸コネクタとストリップ
ラインに対して完全に整合をとることができない欠点が
ある。In the coaxial portion of the conventional coaxial connector, an inductive inductance component is generated at a high frequency, so that the coaxial connector and the strip line cannot be perfectly matched. There is.
【０００４】[0004]
【課題を解決するための手段】本発明の同軸コネクタの
接続構造は、同軸コネクタとストリップラインとの間で
インピーダンス変換を行う同軸コネクタの接続構造にお
いて、前記同軸コネクタの出力側に第１の同軸部を前記
ストリップラインの入力側に第２の同軸部を接続し、前
記第１の同軸部の中心導体内径と外部導体外径との比よ
りも、前記第２の同軸部の中心導体内径と外部導体外径
との比を小さくすることを特徴とする。A coaxial connector connection structure of the present invention is a coaxial connector connection structure for impedance conversion between a coaxial connector and a strip line, wherein a first coaxial connector is provided on an output side of the coaxial connector. The second coaxial portion is connected to the input side of the strip line, and the center conductor inner diameter of the second coaxial portion is larger than the ratio of the center conductor inner diameter of the first coaxial portion to the outer conductor outer diameter. It is characterized in that the ratio with the outer diameter of the outer conductor is reduced.
【０００５】[0005]
【実施例】次に、本発明について図面を参照して説明す
る。図１（ａ）は、本発明の一実施例の断面図である。
図１において図２の従来例と同一の符号は同一の構造と
機能を有する。すなわち本実施例では、中心導体３の内
径Ｎと接地部であるシールドケース４の外径との比が異
なる同軸部２Ａおよび同軸部２Ｂからなるインピーダン
ス変換部２を有している。ここで同軸部２Ａの内径Ｎ／
外径Ｍよりも同軸部２Ｂの内径Ｎ／外径Ｌを小さくする
ことにより、同軸部２Ａと２Ｂの接続部分で容量性キャ
パシタンスを形成する。図１（ｂ）はインピーダンス変
換部２の等価回路を示しており、前述した容量性キャパ
シタンスＣにより同軸部２Ａ，２Ｂで生ずる誘導性イン
ダクタンスＬとが打消されることにより、高周波周波数
に対して整合させている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1A is a sectional view of an embodiment of the present invention.
1, the same reference numerals as those in the conventional example of FIG. 2 have the same structure and function. That is, the present embodiment has the impedance conversion section 2 including the coaxial portion 2A and the coaxial portion 2B having different ratios of the inner diameter N of the central conductor 3 and the outer diameter of the shield case 4 which is the ground portion. Here, the inner diameter N / of the coaxial portion 2A
By making the inner diameter N / outer diameter L of the coaxial portion 2B smaller than the outer diameter M, a capacitive capacitance is formed at the connecting portion between the coaxial portions 2A and 2B. FIG. 1 (b) shows an equivalent circuit of the impedance converter 2, which is matched with a high frequency by canceling the inductive inductance L generated in the coaxial portions 2A and 2B by the capacitive capacitance C described above. I am letting you.
【０００６】[0006]
【発明の効果】以上説明したように本発明は、内外径比
の異なる少なくとも２個の同軸部を設けることにより、
同軸コネクタとストリップラインとの間の接続により生
じるインダクタンスを打消すキャパシタンスを形成した
ので、両者のインピーダンスを整合させることができる
効果を有する。As described above, according to the present invention, by providing at least two coaxial portions having different inner / outer diameter ratios,
Since the capacitance that cancels the inductance generated by the connection between the coaxial connector and the strip line is formed, the impedance of both can be matched.
【図１】本発明の一実施例の断面図（ａ）および等価回
路（ｂ）である。FIG. 1 is a sectional view (a) and an equivalent circuit (b) of an embodiment of the present invention.
【図２】従来の同軸コネクタとストリップラインの接続
構造の断面図である。FIG. 2 is a cross-sectional view of a conventional coaxial connector and stripline connection structure.
１ 同軸コネクタ ２ インピーダンス変換部 ２Ａ，２Ｂ，７ 同軸部 ３ 中心導体 ４ シールドケース ５ ストリップライン ６ 基板 1 Coaxial Connector 2 Impedance Converter 2A, 2B, 7 Coaxial Part 3 Center Conductor 4 Shield Case 5 Stripline 6 Board
Claims (1)
でインピーダンス変換を行う同軸コネクタの接続構造に
おいて、前記同軸コネクタの出力側に第１の同軸部を前
記ストリップラインの入力側に第２の同軸部を接続し、
前記第１の同軸部の中心導体内径と外部導体外径との比
よりも、前記第２の同軸部の中心導体内径と外部導体外
径との比を小さくすることを特徴とする同軸コネクタの
接続構造。1. A coaxial connector connection structure for impedance conversion between a coaxial connector and a strip line, wherein a first coaxial portion is provided on an output side of the coaxial connector and a second coaxial portion is provided on an input side of the strip line. Connect
A ratio of the center conductor inner diameter of the second coaxial portion to the outer conductor outer diameter is smaller than the ratio of the center conductor inner diameter of the first coaxial portion to the outer conductor outer diameter of the coaxial connector. Connection structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23528293A JPH0794917A (en) | 1993-09-22 | 1993-09-22 | Connection structure of coaxial connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23528293A JPH0794917A (en) | 1993-09-22 | 1993-09-22 | Connection structure of coaxial connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0794917A true JPH0794917A (en) | 1995-04-07 |
Family
ID=16983797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23528293A Withdrawn JPH0794917A (en) | 1993-09-22 | 1993-09-22 | Connection structure of coaxial connector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0794917A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010108691A (en) * | 2008-10-29 | 2010-05-13 | Shimada Phys & Chem Ind Co Ltd | Connection structure and connecting method of coax connector in multi-layer printed wiring board |
| WO2023282340A1 (en) * | 2021-07-09 | 2023-01-12 | 京セラ株式会社 | Electronic element storing package and electronic device |
-
1993
- 1993-09-22 JP JP23528293A patent/JPH0794917A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010108691A (en) * | 2008-10-29 | 2010-05-13 | Shimada Phys & Chem Ind Co Ltd | Connection structure and connecting method of coax connector in multi-layer printed wiring board |
| WO2023282340A1 (en) * | 2021-07-09 | 2023-01-12 | 京セラ株式会社 | Electronic element storing package and electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20001128 |