JP2655430B2 - Coaxial-microstrip line converter - Google Patents
Coaxial-microstrip line converterInfo
- Publication number
- JP2655430B2 JP2655430B2 JP5901289A JP5901289A JP2655430B2 JP 2655430 B2 JP2655430 B2 JP 2655430B2 JP 5901289 A JP5901289 A JP 5901289A JP 5901289 A JP5901289 A JP 5901289A JP 2655430 B2 JP2655430 B2 JP 2655430B2
- Authority
- JP
- Japan
- Prior art keywords
- coaxial
- microstrip line
- flexible
- line
- flexible printed
- 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
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0237—High frequency adaptations
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/36—Assembling printed circuits with other printed circuits
- H05K3/361—Assembling flexible printed circuits with other printed circuits
Landscapes
- Waveguide Connection Structure (AREA)
- Microwave Amplifiers (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はマイクロ波帯或いはそれ以上の高い周波数帯
で用いる伝送線路に関し、特にマイクロストリップ線路
と同軸線路の変換器に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission line used in a microwave band or a higher frequency band, and more particularly to a converter of a microstrip line and a coaxial line.
〔従来の技術〕 従来、この種の同軸−マイクロストリップ線路変換器
として第３図及び第４図に示すものが提案されている。
第３図はその一部の平面図、第４図はその縦断面図であ
り、ケース１に取着した同軸線路のコネクタ２の中心導
体2aと、ケース１内に内装した誘電体基板３に設けたマ
イクロストリップ線路４とを、紙面と垂直な方向に円弧
状に曲げた可撓性のある導電性リボン９を介して夫々半
田11,10で接続している。[Prior Art] Conventionally, a coaxial-microstrip line converter of this type has been proposed as shown in FIG. 3 and FIG.
FIG. 3 is a plan view of a part thereof, and FIG. 4 is a longitudinal sectional view of the same. The center conductor 2a of the connector 2 of the coaxial line attached to the case 1 and the dielectric substrate 3 housed in the case 1 The provided microstrip line 4 is connected to the microstrip line 4 by solders 11 and 10 via flexible conductive ribbons 9 bent in an arc shape in a direction perpendicular to the paper surface.
この構成では、誘電体基板３とケース１との間の温度
膨張係数の相違に起因するマイクロストリップ線路４と
同軸コネクタ２との間の環境温度の変動によって生じる
伝送線路の伝送方向の熱歪を導電性リボン９の可撓性に
よって吸収することができる。In this configuration, the thermal strain in the transmission direction of the transmission line caused by the fluctuation of the environmental temperature between the microstrip line 4 and the coaxial connector 2 due to the difference in the thermal expansion coefficient between the dielectric substrate 3 and the case 1 is reduced. It can be absorbed by the flexibility of the conductive ribbon 9.
上述した従来の同軸−マイクロストリップ線路変換器
では、同軸コネクタ２とマイクロストリップ線路４との
間の熱歪を吸収するために設けた導電性リボン９が、伝
送線路において直列のインダクタンスとして動作し易
い。そのため、特に4GHz以上の高周波帯において同軸−
マイクロストリップ線路間で良好なインピーダンス整合
を得ることができないという問題がある。In the above-described conventional coaxial-microstrip line converter, the conductive ribbon 9 provided for absorbing the thermal strain between the coaxial connector 2 and the microstrip line 4 easily operates as a series inductance in the transmission line. . Therefore, especially in the high frequency band of 4 GHz or more,
There is a problem that good impedance matching cannot be obtained between the microstrip lines.
本発明は導電性リボンのインダクタンスの影響を解消
して整合特性を改善した同軸−マイクロストリップ線路
変換器を提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a coaxial-to-microstrip line converter with improved matching characteristics by eliminating the influence of the inductance of the conductive ribbon.
本発明の同軸−マイクロストリップ線路変換器は、誘
電帯基板に形成したマイクロストリップ線路と、同軸線
路の中心導体とをフレキシブルプリント板で接続してい
る。このフレキシブルプリント板は、誘電体シートの両
面に夫々フレキシブル導体膜を形成し、一方のフレキシ
ブル導体膜をマイクロストリップ線に、他方を同軸線路
の中心導体に夫々接続している。In the coaxial-microstrip line converter of the present invention, the microstrip line formed on the dielectric band substrate and the center conductor of the coaxial line are connected by a flexible printed board. In this flexible printed board, flexible conductor films are formed on both surfaces of a dielectric sheet, and one flexible conductor film is connected to a microstrip line and the other is connected to a center conductor of a coaxial line.
上述した構成では、フレキシブルプリント板はフレキ
シブル導体膜と誘電体シートとで容量性リアクタンスを
構成し、フレキシブル導体膜に寄生する誘導性リアクタ
ンスと共にLC回路を構成して同軸−マイクロストリップ
線路の変換器におけるインピーダンスの整合が可能とな
る。In the configuration described above, the flexible printed circuit board forms a capacitive reactance by the flexible conductive film and the dielectric sheet, forms an LC circuit together with an inductive reactance parasitic on the flexible conductive film, and is used in a coaxial-microstrip line converter. Impedance matching becomes possible.
次に、本発明を図面を参照して説明する。 Next, the present invention will be described with reference to the drawings.
第１図は本発明の一実施例の平面図であり、第２図は
その縦断面図である。これらの図において、１はケース
であり、このケース１の一部には同軸線路を構成する同
軸コネクタ２を取着し、またケース１内には誘電体基板
３を内装している。そして、この誘電体基板３にはマイ
クロストリップ線路４が形成され、その一端部において
前記同軸コネクタ２の中心導体2aにフレキシブルプリン
ト板５により電気的接続を行っている。FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view thereof. In these figures, reference numeral 1 denotes a case, a coaxial connector 2 constituting a coaxial line is attached to a part of the case 1, and a dielectric substrate 3 is provided inside the case 1. A microstrip line 4 is formed on the dielectric substrate 3, and one end of the microstrip line 4 is electrically connected to a center conductor 2 a of the coaxial connector 2 by a flexible printed board 5.
このフレキシブルプリント板５は、誘電体シート６の
両面に銅箔等のフレキシブル導体膜7,8を夫々形成し、
片面のフレキシブル導体膜７を一方向に延長させ、反対
面のフレキシブル導体膜８を他方向に延長させている。
そして、一方のフレキシブル導体膜７をマイクロストリ
ップ線路４に半田10付けし、他方のフレキシブル導体膜
８を同軸コネクタ２の中心導体2aに半田11付けしてい
る。The flexible printed board 5 has flexible conductor films 7, 8 such as copper foil formed on both surfaces of a dielectric sheet 6, respectively.
The flexible conductor film 7 on one side is extended in one direction, and the flexible conductor film 8 on the opposite surface is extended in the other direction.
Then, one flexible conductor film 7 is soldered 10 to the microstrip line 4, and the other flexible conductor film 8 is soldered 11 to the center conductor 2 a of the coaxial connector 2.
この構成によれば、フレキシブルプリント板５は、フ
レキシブル導体膜7,8の可撓性により全体としても可撓
性が備えられており、これまでの導電性リボンと同様に
同軸コネクタ２とマイクロストリップ線路４との間に生
じる熱歪を吸収し、温度変化に対するストレスリリーフ
を確保する。According to this configuration, the flexible printed board 5 is provided with flexibility as a whole due to the flexibility of the flexible conductor films 7 and 8, and the coaxial connector 2 and the microstrip are provided similarly to the conventional conductive ribbon. The thermal strain generated between the line 4 is absorbed, and a stress relief against a temperature change is secured.
また、フレキシブルプリント板５は、フレキシブル導
体膜7,8が誘電体シート６を挟んだ構成のコンデンサと
して機能するため、電気的には容量性リアクタンスとな
り、フレキシブル導体膜7,8に寄生する誘導性リアクタ
ンスとでLC回路を構成する。このため、これらLCの値を
適宜に設定することで、同軸コネクタ２とマイクロスト
リップ線路４とを好適にインピーダンス整合することが
可能となる。In addition, since the flexible printed circuit board 5 functions as a capacitor having the flexible conductive films 7 and 8 sandwiching the dielectric sheet 6, the flexible printed board 5 becomes an electrically capacitive reactance, and the inductive and parasitic inductances of the flexible conductive films 7 and 8 are generated. An LC circuit is configured by reactance. For this reason, by appropriately setting these LC values, it becomes possible to suitably perform impedance matching between the coaxial connector 2 and the microstrip line 4.
なお、上述したＣ値は、誘電体シート６を材質，厚
さ，面積等により調整でき、Ｌ値はフレキシブル導体膜
7,8の幅や長さにより調整できる。The above-mentioned C value can be adjusted by the material, thickness, area and the like of the dielectric sheet 6, and the L value is a flexible conductive film.
It can be adjusted by 7,8 width and length.
以上説明したように本発明は、マイクロストリップ線
路と同軸線路とをコンデンサ構造をしたフレキシブルプ
リント板で接続しているので、その容量性リアクタンス
とフレキシブル導体膜に寄生する誘導性リアクタンスと
共にLC回路を構成し、同軸−マイクロストリップ線路の
変換器におけるインピーダンスを好適に整合することが
できる効果がある。As described above, in the present invention, since the microstrip line and the coaxial line are connected by the flexible printed circuit board having the capacitor structure, the LC circuit is formed together with the capacitive reactance and the inductive reactance parasitic on the flexible conductive film. However, there is an effect that the impedance in the coaxial-microstrip line converter can be suitably matched.
第１図は本発明の一実施例の要部の平面図、第２図は第
１図の縦断面図、第３図は従来の同軸−マイクロストリ
ップ線路変換器の一部の平面図、第４図はその縦断面図
である。 １……ケース、２……同軸コネクタ（同軸線路）、2a…
…中心導体、３……誘電体基板、４……マイクロストリ
ップ線路、５……フレキシブルプリント板、６……誘電
体シート、7,8……フレキシブル導体膜、９……導体リ
ボン、10,11……半田。1 is a plan view of a main part of one embodiment of the present invention, FIG. 2 is a longitudinal sectional view of FIG. 1, FIG. 3 is a plan view of a part of a conventional coaxial-microstrip line converter, FIG. FIG. 4 is a longitudinal sectional view thereof. 1 ... case, 2 ... coaxial connector (coaxial line), 2a ...
... Center conductor, 3 ... Dielectric substrate, 4 ... Microstrip line, 5 ... Flexible printed board, 6 ... Dielectric sheet, 7,8 ... Flexible conductor film, 9 ... Conductor ribbon, 10,11 ……solder.
Claims (1)
線路と、同軸線路の中心導体とをフレキシブルプリント
板で接続した構成において、前記フレキシブルプリント
板は誘電体シートの両面に夫々フレキシブル導体膜を形
成し、これらフレキシブル導体膜の一方を前記マイクロ
ストリップ線に、他方を前記同軸線路の中心導体に夫々
接続したことを特徴とする同軸−マイクロストリップ線
路変換器。In a configuration in which a microstrip line formed on a dielectric substrate and a center conductor of a coaxial line are connected by a flexible printed board, the flexible printed board has flexible conductive films formed on both surfaces of a dielectric sheet. A coaxial-microstrip line converter, wherein one of the flexible conductor films is connected to the microstrip line and the other is connected to the center conductor of the coaxial line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5901289A JP2655430B2 (en) | 1989-03-10 | 1989-03-10 | Coaxial-microstrip line converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5901289A JP2655430B2 (en) | 1989-03-10 | 1989-03-10 | Coaxial-microstrip line converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02237302A JPH02237302A (en) | 1990-09-19 |
| JP2655430B2 true JP2655430B2 (en) | 1997-09-17 |
Family
ID=13100954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5901289A Expired - Lifetime JP2655430B2 (en) | 1989-03-10 | 1989-03-10 | Coaxial-microstrip line converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2655430B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5402088A (en) * | 1992-12-03 | 1995-03-28 | Ail Systems, Inc. | Apparatus for the interconnection of radio frequency (RF) monolithic microwave integrated circuits |
| US6758698B1 (en) | 1992-12-23 | 2004-07-06 | Panduit Corp. | Communication connector with capacitor label |
| TW218060B (en) * | 1992-12-23 | 1993-12-21 | Panduit Corp | Communication connector with capacitor label |
| GB2378045A (en) * | 2001-07-25 | 2003-01-29 | Marconi Caswell Ltd | Electrical connection with flexible coplanar transmission line |
-
1989
- 1989-03-10 JP JP5901289A patent/JP2655430B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02237302A (en) | 1990-09-19 |
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