JPH05259713A - Coaxial microstrip line converter - Google Patents

Coaxial microstrip line converter

Info

Publication number
JPH05259713A
JPH05259713A JP4087648A JP8764892A JPH05259713A JP H05259713 A JPH05259713 A JP H05259713A JP 4087648 A JP4087648 A JP 4087648A JP 8764892 A JP8764892 A JP 8764892A JP H05259713 A JPH05259713 A JP H05259713A
Authority
JP
Japan
Prior art keywords
microstrip line
substrate
coaxial
line converter
waveguide
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.)
Granted
Application number
JP4087648A
Other languages
Japanese (ja)
Other versions
JP2682589B2 (en
Inventor
Yoshihiko Imai
芳彦 今井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4087648A priority Critical patent/JP2682589B2/en
Publication of JPH05259713A publication Critical patent/JPH05259713A/en
Application granted granted Critical
Publication of JP2682589B2 publication Critical patent/JP2682589B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To obtain the coaxial microstrip line converter having an excellent characteristic in which no undesired radiation is caused externally. CONSTITUTION:Feeding is applied to a board 7 perpendicularly from an upper part of a strip conductor of a microstrip line. In this case, a metallic block 4 is placed between a coaxial connector 1 and the board 7 and a cut-off waveguide 6 is formed with an earth conductor on the rear side of the board and the metallic block 4 by hollowing out the metallic block 4 and a microstrip line side output terminal is formed.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、マイクロストリップ
線路のストリップ導体側上方より垂直に同軸給電できる
同軸マイクロストリップ線路変換器に関するものであ
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial microstrip line converter capable of coaxially feeding power vertically from above a strip conductor of a microstrip line.

【0002】[0002]

【従来の技術】図6aは、マイクロストリップ線路のス
トリップ導体側上方より垂直に同軸給電できる同軸マイ
クロストリップ線路変換器の従来の構成例である。図に
おいて、1は同軸コネクタ(以下、レセプタクルと呼
ぶ)、3はレセプタクル1の中心導体(ピン)、7はマ
イクロストリップ線路等が形成されている基板、8は基
板7上に形成されたマイクロストリップ線路、10はレ
セプタクル1と基板7との間に設置される小型の基板、
11は基板7及び小型基板10の表裏のアースパターン
同士を接続するスルーホール、12は基板7及び小型基
板10により形成されるトリプレート線路、13は四隅
の取付ネジであり、実装時、レセプタクル1と基板10
及び基板7はこのネジ13により台座にとも締めされ
る。なお、図6(b)は基板10の裏面のパターンの一例
を示している。
2. Description of the Related Art FIG. 6a shows an example of a conventional structure of a coaxial microstrip line converter capable of vertically feeding coaxially from above the strip conductor side of a microstrip line. In the figure, 1 is a coaxial connector (hereinafter referred to as a receptacle), 3 is a central conductor (pin) of the receptacle 1, 7 is a substrate on which a microstrip line or the like is formed, and 8 is a microstrip formed on the substrate 7. The line 10 is a small board installed between the receptacle 1 and the board 7,
Reference numeral 11 is a through hole that connects the ground patterns on the front and back of the board 7 and the small board 10, 12 is a triplate line formed by the board 7 and the small board 10, and 13 is a mounting screw at each of the four corners. And board 10
The board 7 is also fastened to the pedestal by the screw 13. Note that FIG. 6B shows an example of the pattern on the back surface of the substrate 10.

【0003】図6において、レセプタクル1の中心導体
3は小型の基板10を貫通し、基板7上に形成されたマ
イクロストリップ線路8に接続される。一方、同軸コネ
クタの中心導体3と誘電体を隔てた外周に設けられた外
導体は、小型の基板10の表面のアースパターンを介
し、基板10及び基板7中のスルーホール11を経て、
基板7の裏面のアースパターンに接続される。また、基
板7上のマイクロストリップ線路8は、基板10と重な
る部分(図6中の12)においてはトリプレート線路を
構成しており、伝搬モードは同軸→トリプレート線路→
マイクロストリップ線路の順に変換される。
In FIG. 6, the central conductor 3 of the receptacle 1 penetrates a small substrate 10 and is connected to a microstrip line 8 formed on the substrate 7. On the other hand, the outer conductor provided on the outer periphery of the coaxial connector, which is separated from the central conductor 3 by a dielectric, passes through the ground pattern on the surface of the small board 10 and through the through holes 11 in the board 10 and the board 7.
It is connected to the ground pattern on the back surface of the substrate 7. Further, the microstrip line 8 on the substrate 7 constitutes a triplate line in a portion (12 in FIG. 6) overlapping the substrate 10, and the propagation mode is coaxial → triplate line →
Converted in the order of microstrip lines.

【0004】[0004]

【発明が解決しようとする課題】従来の同軸マイクロス
トリップ線路変換器は上記のように構成されているの
で、モード変換部において、電磁界が小型基板10及び
基板7とレセプタクル1との接触面のすき間を伝搬し、
外部へ放射して種々の不具合を生じさせるという問題点
があった。
Since the conventional coaxial microstrip line converter is configured as described above, in the mode converter, the electromagnetic field is generated on the small substrate 10 and the contact surface between the substrate 7 and the receptacle 1. Propagate through the gap,
There is a problem in that it radiates to the outside and causes various problems.

【0005】この発明は上記のような問題点を解消する
ためになされたもので、良好な特性を有し、かつ外部へ
不要な放射を生じさせることのない、基板上方より垂直
に同軸給電可能な構造の同軸マイクロストリップ線路変
換器を得ることを目的としている。
The present invention has been made in order to solve the above-mentioned problems, and it is possible to feed coaxially vertically from above the substrate, which has good characteristics and does not generate unnecessary radiation to the outside. The purpose is to obtain a coaxial microstrip line converter of various structures.

【0006】[0006]

【課題を解決するための手段】この発明に係る同軸マイ
クロストリップ線路変換器は、同軸コネクタとマイクロ
ストリップ線路等を形成した基板の間に金属ブロックを
設置し、この金属ブロックをマイクロストリップ線路出
力側方向に沿ってくりぬき、マイクロストリップ線路を
形成した基板の裏面アース導体と上記金属ブロックとで
カットオフ導波管を構成する。
In the coaxial microstrip line converter according to the present invention, a metal block is installed between a coaxial connector and a substrate on which a microstrip line or the like is formed, and the metal block is placed on the output side of the microstrip line. A cut-off waveguide is formed by hollowing out along the direction, and the backside ground conductor of the substrate on which the microstrip line is formed and the metal block.

【0007】また、カットオフ導波管の短絡面近傍のH
面にステップを設け、低インピーダンス導波管とする。
Further, H near the short-circuit surface of the cut-off waveguide
A step is provided on the surface to form a low impedance waveguide.

【0008】更に、金属ブロックと基板の裏面アース導
体とで構成されるカットオフ導波管の基板上に、フィル
タ、増幅器などのマイクロ波回路素子を形成する。
Further, a microwave circuit element such as a filter or an amplifier is formed on the substrate of the cut-off waveguide composed of the metal block and the ground conductor on the back surface of the substrate.

【0009】[0009]

【作用】この発明における同軸マイクロストリップ線路
変換器においては、マイクロストリップ線路の引出し方
向以外は、基板のアースパターンと金属ブロックとが強
固に接地され、また、線路の引出し方向は使用周波数に
対しカットオフとなる導波管を構成するため、いずれの
方向へも不要な電磁波の放射は発生しない。
In the coaxial microstrip line converter according to the present invention, the ground pattern of the substrate and the metal block are firmly grounded except for the drawing direction of the microstrip line, and the drawing direction of the line is cut to the used frequency. Since the waveguide is turned off, unnecessary radiation of electromagnetic waves does not occur in any direction.

【0010】[0010]

【実施例】実施例1.以下、この発明の一実施例を図に
ついて説明する。図1において、1は同軸コネクタ(レ
セプタクル)、3はレセプタクル1の中心導体(ピ
ン)、2は中心導体3の回りのテフロン被覆、4は金属
ブロック、5,6は金属ブロック4を切削して形成され
たコネクタ取付穴及びカットオフ導波管部、7は基板、
8は基板7上に形成されたマイクロストリップ線路、1
1は基板7の表裏のアースパターン同士を接続するスル
ーホール、13は金属ブロック4を基板7に取り付ける
取付ネジである。
EXAMPLES Example 1. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a coaxial connector (receptacle), 3 is a center conductor (pin) of the receptacle 1, 2 is Teflon coating around the center conductor 3, 4 is a metal block, 5 and 6 are metal blocks 4 The formed connector mounting hole and cut-off waveguide section, 7 is a substrate,
8 is a microstrip line formed on the substrate 7, 1
Reference numeral 1 is a through hole for connecting the ground patterns on the front and back sides of the substrate 7, and 13 is a mounting screw for attaching the metal block 4 to the substrate 7.

【0011】また、図2は図1のA−A線断面を示し、
金属ブロック4及び基板7を縦方向に切断した図であ
る。なお、14はケース等の接地導体である。
FIG. 2 is a sectional view taken along line AA of FIG.
It is the figure which cut | disconnected the metal block 4 and the board | substrate 7 in the vertical direction. Reference numeral 14 is a ground conductor such as a case.

【0012】図1及び図2において、レセプタクル1は
金属ブロック4のコネクタ取付穴5を貫通し、その中心
導体3は基板7上に形成されたマイクロストリップ線路
8に接続される。一方、同軸の外導体は金属ブロック4
に接続されるとともに、基板7中のスルーホール11を
介して接地導体14にも接続される。レセプタクル1か
ら給電された同軸モードの電磁界は、マイクロストリッ
プ線路のモードに変換されて8へ伝送されるが、モード
変換部における電磁界の乱れにより放射電磁界が発生す
る。しかし、金属ブロック4のカットオフ導波管部6の
幅W,長さLを適当に選べば、この放射電磁界はカット
オフ導波管部6の内部で減衰を受け、カットオフ導波管
部6の開口面から外部へ放射することなく、マイクロス
トリップ線路のモードのみがこの変換器から出力され
る。
1 and 2, the receptacle 1 penetrates the connector mounting hole 5 of the metal block 4, and the center conductor 3 thereof is connected to the microstrip line 8 formed on the substrate 7. On the other hand, the coaxial outer conductor is the metal block 4
And to the ground conductor 14 via the through hole 11 in the substrate 7. The coaxial mode electromagnetic field fed from the receptacle 1 is converted into the mode of the microstrip line and transmitted to 8. However, the radiated electromagnetic field is generated due to the disturbance of the electromagnetic field in the mode conversion section. However, if the width W and the length L of the cutoff waveguide portion 6 of the metal block 4 are properly selected, this radiated electromagnetic field is attenuated inside the cutoff waveguide portion 6 and the cutoff waveguide portion 6 is attenuated. Only the mode of the microstrip line is output from this converter without radiating to the outside from the opening surface of the portion 6.

【0013】実施例2.図3はこの発明の第2の実施例
を示す斜視図であり、図4は図3のB−B線において金
属ブロック4及び基板7を切断した断面図である。この
実施例2においては、金属ブロック4のコネクタ取付穴
5付近の導波管H面にステップを設けている。このよう
な構造とすることにより、レセプタクル1のテフロン被
覆2の露出部が少なくなり、基板7に接触する直前まで
電磁界は同軸モードで伝搬する、従ってモード変換部に
おける電磁界の乱れは実施例1の場合より小さくなり、
変換器の特性(VSWR等)が改善される。
Embodiment 2. 3 is a perspective view showing a second embodiment of the present invention, and FIG. 4 is a sectional view of the metal block 4 and the substrate 7 taken along the line BB in FIG. In the second embodiment, steps are provided on the surface of the waveguide H near the connector mounting hole 5 of the metal block 4. With such a structure, the exposed portion of the Teflon coating 2 of the receptacle 1 is reduced, and the electromagnetic field propagates in the coaxial mode until just before the contact with the substrate 7. Therefore, the disturbance of the electromagnetic field in the mode conversion portion is reduced to the embodiment. Smaller than the case of 1,
The characteristics of the converter (VSWR etc.) are improved.

【0014】実施例3.図5はこの発明の第3の実施例
を示す斜視図である。本実施例においては、カットオフ
導波管部6内の基板7上に帯域通過フィルタ9を構成し
ている。帯域通過フィルタ9は遮断周波数に対しては全
反射となるので、放射による結合を防ぐため、カットオ
フ導波管を構成するカバーで覆う必要がある。本実施例
によれば、同軸マイクロストリップ線路変換器内に基板
7上のパターンとして帯域通過フィルタを構成すること
によりこのカバーが不要となるため、部品点数が削減で
きる効果がある。また、帯域通過フィルタの代りに増幅
器モジュール等の他のマイクロ波回路素子を形成しても
良く、いずれの場合にも機構部品点数を増やすことな
く、素子の前後のアイソレーションを改善する効果があ
る。
Example 3. FIG. 5 is a perspective view showing a third embodiment of the present invention. In this embodiment, the bandpass filter 9 is formed on the substrate 7 in the cutoff waveguide section 6. Since the bandpass filter 9 is totally reflected at the cutoff frequency, it is necessary to cover the bandpass filter 9 with a cover that constitutes a cutoff waveguide in order to prevent coupling due to radiation. According to the present embodiment, since the bandpass filter is formed as a pattern on the substrate 7 in the coaxial microstrip line converter, this cover is not required, and thus the number of parts can be reduced. Further, instead of the band pass filter, another microwave circuit element such as an amplifier module may be formed, and in any case, there is an effect of improving isolation before and after the element without increasing the number of mechanical parts. ..

【0015】[0015]

【発明の効果】以上のように、この発明によれば同軸マ
イクロストリップ線路変換器のモード変換部をカットオ
フ導波管を形成するような金属ブロック内に作り込んだ
ので、良好な特性をもち、かつ外部へ不要な放射を生じ
させることのない同軸マイクロストリップ線路変換器を
提供できる効果がある。
As described above, according to the present invention, since the mode converting portion of the coaxial microstrip line converter is built in the metal block forming the cut-off waveguide, it has good characteristics. In addition, it is possible to provide a coaxial microstrip line converter that does not generate unnecessary radiation to the outside.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明の実施例1による同軸マイクロストリ
ップ線路変換器を示す斜視図である。
FIG. 1 is a perspective view showing a coaxial microstrip line converter according to a first embodiment of the present invention.

【図2】図1のA−A線断面を示す図である。FIG. 2 is a view showing a cross section taken along the line AA of FIG.

【図3】この発明の実施例2による同軸マイクロストリ
ップ線路変換器を示す斜視図である。
FIG. 3 is a perspective view showing a coaxial microstrip line converter according to a second embodiment of the present invention.

【図4】図3のB−B線断面を示す図である。4 is a diagram showing a cross section taken along line BB of FIG.

【図5】この発明の実施例3による同軸マイクロストリ
ップ線路変換器を示す斜視図である。
FIG. 5 is a perspective view showing a coaxial microstrip line converter according to a third embodiment of the present invention.

【図6】従来の同軸マイクロストリップ線路変換器の一
構成例を示す斜視図である。
FIG. 6 is a perspective view showing a configuration example of a conventional coaxial microstrip line converter.

【符号の説明】[Explanation of symbols]

1 同軸コネクタ(レセプタクル) 2 テフロン被覆 3 中心導体(ピン) 4 金属ブロック 5 コネクタ取付穴 6 カットオフ導波管 7 基板 8 マイクロストリップ線路のストリップ導体 9 帯域通過フィルタ 11 スルーホール 13 取付ネジ 1 coaxial connector (receptacle) 2 Teflon coating 3 center conductor (pin) 4 metal block 5 connector mounting hole 6 cutoff waveguide 7 substrate 8 microstrip line strip conductor 9 bandpass filter 11 through hole 13 mounting screw

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 マイクロストリップ線路のストリップ導
体側の上方から同軸給電する同軸マイクロストリップ線
路変換器において、 同軸コネクタと、マイクロストリップ線路を形成した基
板と、同軸コネクタと前記基板のストリップ導体面側と
の間に挟まれる金属ブロックを備え、同軸コネクタの中
心導体は金属ブロックと絶縁されて基板表面のストリッ
プ導体線路に接続され、同軸コネクタの外導体は金属ブ
ロックを介して前記基板裏面のアース導体に接続され、
金属ブロックと前記基板裏面のアース導体とでカットオ
フ導波管を構成してマイクロストリップ線路側の出力端
子と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。
1. A coaxial microstrip line converter for coaxially feeding power from above a strip conductor side of a microstrip line, a coaxial connector, a substrate on which a microstrip line is formed, a coaxial connector and a strip conductor surface side of the substrate. A central block of the coaxial connector is insulated from the metallic block and connected to a strip conductor line on the front surface of the substrate, and an outer conductor of the coaxial connector is connected to a ground conductor on the rear surface of the substrate through the metallic block. Connected,
A coaxial microstrip line converter characterized in that a cutoff waveguide is constituted by a metal block and a ground conductor on the back surface of the substrate to serve as an output terminal on the microstrip line side.
【請求項2】 請求項1に記載した同軸マイクロストリ
ップ線路変換器において、金属ブロックと基板の裏面ア
ース導体とで構成されるカットオフ導波管の短絡面近傍
のH面に一段下がったステップを設け、低インピーダン
ス導波管としたことを特徴とする請求項1記載の同軸マ
イクロストリップ線路変換器。
2. The coaxial microstrip line converter according to claim 1, further comprising a step stepped down to the H-plane near the short-circuit plane of the cut-off waveguide which is composed of the metal block and the backside ground conductor of the substrate. 2. The coaxial microstrip line converter according to claim 1, wherein the coaxial microstrip line converter is provided as a low impedance waveguide.
【請求項3】 請求項1に記載した同軸マイクロストリ
ップ線路変換器において、金属ブロックと基板の裏面ア
ース導体とで構成されるカットオフ導波管の基板上に、
フィルタ、増幅器などのマイクロ波回路素子を形成した
ことを特徴とする同軸マイクロストリップ線路変換器。
3. The coaxial microstripline converter according to claim 1, wherein a cutoff waveguide substrate composed of a metal block and a backside ground conductor of the substrate is provided.
A coaxial microstrip line converter characterized by forming microwave circuit elements such as a filter and an amplifier.
JP4087648A 1992-03-10 1992-03-10 Coaxial microstrip line converter Expired - Lifetime JP2682589B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4087648A JP2682589B2 (en) 1992-03-10 1992-03-10 Coaxial microstrip line converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4087648A JP2682589B2 (en) 1992-03-10 1992-03-10 Coaxial microstrip line converter

Publications (2)

Publication Number Publication Date
JPH05259713A true JPH05259713A (en) 1993-10-08
JP2682589B2 JP2682589B2 (en) 1997-11-26

Family

ID=13920792

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4087648A Expired - Lifetime JP2682589B2 (en) 1992-03-10 1992-03-10 Coaxial microstrip line converter

Country Status (1)

Country Link
JP (1) JP2682589B2 (en)

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US5801599A (en) * 1992-07-23 1998-09-01 Cambridge Industries Limited RF waveguide to microstrip board transition including means for preventing electromagnetic leakage into the microstrip board
FR2797351A1 (en) * 1999-08-03 2001-02-09 Mitsubishi Electric Corp Supply for substrate line conductor includes holes passing through substrates with high impedance surroundings to enable HF supply
JP2002252505A (en) * 2001-02-26 2002-09-06 Kyocera Corp Wiring board for high frequency
KR100687020B1 (en) * 2005-09-08 2007-03-02 센싱테크 주식회사 Coaxial Line-Microstrip Line Transition Apparatus
CN100391045C (en) * 2002-09-20 2008-05-28 伊兹德国有限公司 Junction between a microstrip line and a waveguide
US10522894B2 (en) 2015-05-19 2019-12-31 Mitsubishi Electric Corporation Coaxial line to microstrip line conversion circuit, where the conversion circuit comprises a waveguide in which the coaxial line and the microstrip line are disposed
CN114362841A (en) * 2021-12-13 2022-04-15 深圳市卓汉材料技术有限公司 Passive intermodulation test fixture and passive intermodulation test system

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JPS6157701U (en) * 1984-09-19 1986-04-18
JPS61104605U (en) * 1984-12-14 1986-07-03
JPS63200906U (en) * 1987-06-17 1988-12-23

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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JPS63200906U (en) * 1987-06-17 1988-12-23

Cited By (11)

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US5801599A (en) * 1992-07-23 1998-09-01 Cambridge Industries Limited RF waveguide to microstrip board transition including means for preventing electromagnetic leakage into the microstrip board
US6232849B1 (en) 1992-07-23 2001-05-15 Stephen John Flynn RF waveguide signal transition apparatus
JPH07254810A (en) * 1994-03-15 1995-10-03 Toshiba Corp Structure for high frequency circuit
FR2797351A1 (en) * 1999-08-03 2001-02-09 Mitsubishi Electric Corp Supply for substrate line conductor includes holes passing through substrates with high impedance surroundings to enable HF supply
US6400234B1 (en) 1999-08-03 2002-06-04 Mitsubishi Denki Kabushiki Kaisha Strip line feeding apparatus
JP2002252505A (en) * 2001-02-26 2002-09-06 Kyocera Corp Wiring board for high frequency
CN100391045C (en) * 2002-09-20 2008-05-28 伊兹德国有限公司 Junction between a microstrip line and a waveguide
KR100687020B1 (en) * 2005-09-08 2007-03-02 센싱테크 주식회사 Coaxial Line-Microstrip Line Transition Apparatus
US10522894B2 (en) 2015-05-19 2019-12-31 Mitsubishi Electric Corporation Coaxial line to microstrip line conversion circuit, where the conversion circuit comprises a waveguide in which the coaxial line and the microstrip line are disposed
CN114362841A (en) * 2021-12-13 2022-04-15 深圳市卓汉材料技术有限公司 Passive intermodulation test fixture and passive intermodulation test system
CN114362841B (en) * 2021-12-13 2023-12-15 深圳市卓汉材料技术有限公司 Passive intermodulation test jig and passive intermodulation test system

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