JPH0590806A - Waveguide/strip line converter - Google Patents

Waveguide/strip line converter

Info

Publication number
JPH0590806A
JPH0590806A JP25100991A JP25100991A JPH0590806A JP H0590806 A JPH0590806 A JP H0590806A JP 25100991 A JP25100991 A JP 25100991A JP 25100991 A JP25100991 A JP 25100991A JP H0590806 A JPH0590806 A JP H0590806A
Authority
JP
Japan
Prior art keywords
pattern
waveguide
strip line
rectangular waveguide
electromagnetic wave
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.)
Pending
Application number
JP25100991A
Other languages
Japanese (ja)
Inventor
Akio Seki
昭男 関
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.)
Fujitsu General Ltd
Original Assignee
Fujitsu General Ltd
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 Fujitsu General Ltd filed Critical Fujitsu General Ltd
Priority to JP25100991A priority Critical patent/JPH0590806A/en
Publication of JPH0590806A publication Critical patent/JPH0590806A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To stabilize the signal transmission characteristic by coupling directly an electromagnetic wave to a part of a conductor pattern and at the same time inputting other parts of the pattern to a processing circuit as a strip line. CONSTITUTION:An opening 5 is formed in a flange 6 of a square waveguide 1 and a TE mode, for example, is applicable. A dielectric substrate 2 is inserted through the upper side surface of the waveguide 1, and a conductor pattern 4 of an approximately cross shape is formed on the substrate 2. Then the electric field of the electromagnetic wave applied into the waveguide 1 is connected to the pattern 4. The distance M between the termination surface 3 of the waveguide 1 and the substrate 2 is set at about 1/4 length of the electromagnetic wave. The distance M is adjusted together with the depth N where the pattern 4 is put into the waveguide 1. So that the electromagnetic wave transmitted in the waveguide is coupled to the pattern 4 with high efficiency. The pattern 4 is partly extended as a signal extracting pattern. A ground pattern is provided on the rear surface of the substrate 2 and a strip line is formed to the signal extracting pattern.

Description

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

【0001】[0001]

【産業上の利用分野】本発明は、マイクロ波を伝送する
導波管回路を、信号処理用の電子回路とを結合させるた
めのストリップ線路に変換する導波管/ストリップ線路
変換器に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waveguide / strip line converter for converting a waveguide circuit for transmitting microwaves into a strip line for coupling with an electronic circuit for signal processing.

【0002】[0002]

【従来の技術】従来の導波管/ストリップ線路変換器に
おいては、図4に示すように、一端に電磁波導入用の開
口5を設け、他端に終端面3を設けた方形導波管1に対
して、方形導波管1の側面から垂直にプローブ11を内
部に挿入し、方形導波管1の上部に設けた誘電体板10
の表面に設けられたストリップ線路13とプローブ11
との間を同軸線路12を介して接続し、方形導波管1内
に導入された電磁波をプローブ11に結合させて、同プ
ローブ11で電気信号に変換して同軸線路12を介して
ストリップ線路に伝え、同ストリップ線路13で信号処
理用の電子回路に入力するようにしていた。
2. Description of the Related Art In a conventional waveguide / strip line converter, as shown in FIG. 4, a rectangular waveguide 1 having an opening 5 for introducing an electromagnetic wave at one end and a terminating surface 3 at the other end is provided. On the other hand, the probe 11 is vertically inserted into the rectangular waveguide 1 from the side surface thereof, and the dielectric plate 10 is provided on the upper portion of the rectangular waveguide 1.
Strip line 13 and probe 11 provided on the surface of the
And the electromagnetic wave introduced into the rectangular waveguide 1 are coupled to the probe 11, the probe 11 converts the electromagnetic wave into an electric signal, and the strip line is transmitted through the coaxial line 12. Then, the strip line 13 is used for input to an electronic circuit for signal processing.

【0003】[0003]

【発明が解決しようとする課題】従って、プローブ11
とストリップ線路13の間を同軸線路12を介在させて
接続しているため、プローブ11とプローブ11を取り
付けている方形導波管1内の取付状態によって構成され
るインピーダンスと同軸線路12とのインピーダンスと
の不整合、及び同軸線路12とストリップ線路13間の
インピーダンスの不整合等により接続部で反射が起こ
り、ストリップ線路13に有効に信号を伝えることがで
きないといった問題点があった。本発明は、ストリップ
線路の導体パターンの一部に直接電磁波を結合させるこ
とにより、プローブ及び同軸線路を削除してコストの低
減を図ると共に、同軸線路を介してプローブとストリッ
プ線路を接続することにより、同接続部で発生する反射
等による損失を排除することを目的とする。
Therefore, the probe 11
Since the coaxial line 12 is connected between the strip line 13 and the strip line 13, the impedance formed by the mounting state of the probe 11 and the rectangular waveguide 1 in which the probe 11 is mounted and the impedance of the coaxial line 12 are connected. There is a problem that a signal cannot be effectively transmitted to the strip line 13 due to reflection at the connection portion due to the mismatch between the coaxial line 12 and the strip line 13, and the impedance mismatch between the coaxial line 12 and the strip line 13. The present invention aims to reduce the cost by eliminating the probe and the coaxial line by directly coupling an electromagnetic wave to a part of the conductor pattern of the strip line, and by connecting the probe and the strip line via the coaxial line. , It is intended to eliminate the loss due to reflection and the like generated at the connection portion.

【0004】[0004]

【課題を解決するための手段】図1は、本発明の一実施
例を示す、導波管/ストリップ線路変換器の一部切り欠
き斜視図であり、同図に示すように、一端に電磁波導入
用の開口5を設け、他端に終端面3を設けた方形導波管
1と、方形導波管1の終端面3に対して直交する向きと
し、前記開口5部からみた取付位置が開口5の略中央と
なるように、方形導波管1の側面から内部に挿入した誘
電体基板2とからなり、誘電体基板2上に略十字状の導
体パターン4を設けて、同十字状の導体パターン4の一
方を延長して前記方形導波管1の外部への信号引き出し
用パターンとし、同信号引き出し用パターンを方形導波
管1の外部でストリップ線路として形成し、方形導波管
1内に導入された電磁波の電界を前記略十字状の導体パ
ターン4に結合させて、導体パターン4で電気信号に変
換してストリップ線路に伝えるようにしている。前記導
体パターン4を、前記信号引き出し用パターンに対し、
長さの異なる複数個の交叉するパターンを設けたものと
して構成するようにしても良い。
FIG. 1 is a partially cutaway perspective view of a waveguide / strip line converter showing an embodiment of the present invention. As shown in FIG. The rectangular waveguide 1 having the introduction opening 5 and the terminating surface 3 at the other end is orthogonal to the terminating surface 3 of the rectangular waveguide 1, and the mounting position viewed from the opening 5 is The dielectric substrate 2 is inserted from the side surface of the rectangular waveguide 1 so as to be substantially in the center of the opening 5, and a substantially cross-shaped conductor pattern 4 is provided on the dielectric substrate 2 to form the cross shape. One of the conductor patterns 4 is extended to form a signal extraction pattern to the outside of the rectangular waveguide 1, and the signal extraction pattern is formed as a strip line outside the rectangular waveguide 1 to form a rectangular waveguide. The electric field of the electromagnetic wave introduced in 1 is coupled to the substantially cross-shaped conductor pattern 4. Te, and to tell the stripline into an electric signal in the conductor pattern 4. The conductor pattern 4 with respect to the signal extraction pattern,
It may be configured such that a plurality of intersecting patterns having different lengths are provided.

【0005】[0005]

【作用】本発明は上記した構成により、導波管回路をス
トリップ線路に変換するようにしており、略十字状の導
体パターン4の一方を延長して方形導波管1の外部に引
き出して、方形導波管1の外部でストリップ線路として
形成して、直接信号処理用回路に入力するようにしてお
り、従来例のようにプローブや、同軸線路を使用してい
ないため、接続部で発生する損失を排除することがで
き、コストの低減を図ることができる。
According to the present invention, the waveguide circuit is converted into a strip line by the above-mentioned structure, and one of the substantially cross-shaped conductor patterns 4 is extended to be drawn out of the rectangular waveguide 1. It is formed as a strip line outside the rectangular waveguide 1 so as to be directly input to the signal processing circuit. Since no probe or coaxial line is used unlike the conventional example, it occurs at the connection portion. Loss can be eliminated and cost can be reduced.

【0006】[0006]

【実施例】図1は、本発明の一実施例を示す、導波管/
ストリップ線路変換器の一部切り欠き斜視図であり、図
2は、図1の正面図である。1は方形導波管であり、一
端を導波管接続用のフランジ6とし、他端を方形導波管
1内に導入した電磁波を反射させる終端面3としてお
り、フランジ6面に開口5を設け、同開口5は、水平方
向を長辺とし、垂直方向を短辺として、同方形導波管1
内に、例えば、TE10モードの電磁波を導入できるよ
うにしている。方形導波管1の終端面3に対して直交す
る向きとし、前記開口5部からみた取付位置が開口5の
中央となるようにして、方形導波管1の上部側面から内
部に誘電体基板2を挿入しており、誘電体基板2上に略
十字状の導体パターン4を設け、同方形導波管1内に導
入された電磁波の電界を前記導体パターン4に結合させ
るようにしている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 shows a waveguide /
FIG. 2 is a partially cutaway perspective view of the stripline converter, and FIG. 2 is a front view of FIG. 1. Reference numeral 1 denotes a rectangular waveguide, one end of which is used as a flange 6 for connecting the waveguide, and the other end of which is used as a terminating surface 3 for reflecting electromagnetic waves introduced into the rectangular waveguide 1, and an opening 5 is formed in the flange 6 surface. The same opening 5 has the long side in the horizontal direction and the short side in the vertical direction, and the rectangular waveguide 1
For example, TE10 mode electromagnetic waves can be introduced therein. The rectangular waveguide 1 is oriented in a direction orthogonal to the terminal surface 3 so that the mounting position viewed from the opening 5 is the center of the opening 5. 2 is inserted, a substantially cross-shaped conductor pattern 4 is provided on the dielectric substrate 2, and the electric field of the electromagnetic wave introduced into the rectangular waveguide 1 is coupled to the conductor pattern 4.

【0007】方形導波管1の終端面3から誘電体基板2
上に設けた導体パターン4迄の距離Mは、前記電磁波の
波長の約1/4の長さになるようにし、同距離M及び方
形導波管1内への導体パターン4の挿入する深さNを調
整して、方形導波管1の内部を伝播してきた電磁波を、
効率良く導体パターン4に結合させることができるよう
にしている。導体パターン4の略十字状の一方のパター
ンを垂直方向に延長して信号引き出し用パターンとし、
方形導波管1の管壁と絶縁して方形導波管1の外部に引
き出すようにし、方形導波管1の外部に引き出す図2に
示すaの部分で、前記信号引き出し用パターンに対し誘
電体基板2の裏面にアースパターンを設けて、ストリッ
プ線路を構成するようにして、同ストリップ線路の導体
を信号処理用回路に直接接続するようにしている。
From the end face 3 of the rectangular waveguide 1 to the dielectric substrate 2
The distance M to the conductor pattern 4 provided above is about 1/4 of the wavelength of the electromagnetic wave, and the distance M and the depth at which the conductor pattern 4 is inserted into the rectangular waveguide 1 are set. By adjusting N, the electromagnetic wave propagating inside the rectangular waveguide 1
The conductor pattern 4 can be efficiently coupled. One of the substantially cross-shaped patterns of the conductor pattern 4 is extended in the vertical direction to form a signal extraction pattern,
The portion a shown in FIG. 2 which is insulated from the wall of the rectangular waveguide 1 so as to be pulled out to the outside of the rectangular waveguide 1 and which is pulled out to the outside of the rectangular waveguide 1 is dielectric with respect to the signal lead-out pattern. An earth pattern is provided on the back surface of the body substrate 2 to form a strip line, and the conductor of the strip line is directly connected to the signal processing circuit.

【0008】図3(A)は、導体パターン4の説明図で
あり、誘電体基板2に設けた導体パターン4の特性イン
ピーダンスは実数部と虚数部とで表されるが、実数部に
対しては、パターンのb部分の寸法を調整し、虚数部に
対してはパターンのc部分の長さLを調整して、導体パ
ターン4の略十字状に形成した部分とストリップ線路と
して構成した部分間でインピーダンスの整合がとれるよ
うにして、ストリップ線路として構成した部分に信号が
効率的に伝送されるようにしている。導体パターン4
は、垂直方向に向かって設けられた信号引き出し用パタ
ーンeに対し、水平方向に交叉するパターンcを一つ設
けた構成としているが、例えば、図3(B)に示すよう
に、水平方向に交叉するパターンdを複数個設けて、各
々のパターンの長さL、L1を異なる長さとして、イン
ピーダンスの整合をとるようにして、ストリップ線路に
信号が効率的に伝送されるようにしても良い。なお、図
1及び図4において、15は切欠き線を示す。
FIG. 3A is an explanatory diagram of the conductor pattern 4, and the characteristic impedance of the conductor pattern 4 provided on the dielectric substrate 2 is represented by a real part and an imaginary part. Between the portion formed as a substantially cross shape of the conductor pattern 4 and the portion configured as a strip line by adjusting the dimension of the b portion of the pattern and adjusting the length L of the c portion of the pattern for the imaginary part. The impedance matching is ensured so that the signal can be efficiently transmitted to the portion configured as the strip line. Conductor pattern 4
Has a configuration in which one pattern c that intersects in the horizontal direction is provided with respect to the signal extraction pattern e provided in the vertical direction. For example, as shown in FIG. A plurality of intersecting patterns d may be provided, and the lengths L and L1 of the respective patterns may be set to different lengths so that impedance matching can be achieved and signals can be efficiently transmitted to the strip line. .. In addition, in FIG. 1 and FIG. 4, 15 shows a notch line.

【0009】[0009]

【発明の効果】以上説明したように、本発明によれば、
導体パターンの一部に直接電磁波を結合させ、同導体パ
ターンの他部をストリップ線路となるように形成して信
号処理用回路に入力するようにしており、従来の変換器
で使用されていたプローブ及び同軸線路を削除してコス
トの低減を図ると共に、同軸線路を使用することにより
生じていた損失を排除することができ、導波管/ストリ
ップ線路変換器の性能向上に寄与するところが大きい。
As described above, according to the present invention,
Electromagnetic waves are directly coupled to a part of the conductor pattern, the other part of the conductor pattern is formed as a strip line, and is input to the signal processing circuit. Probe used in conventional converters. Also, the cost can be reduced by deleting the coaxial line, and the loss caused by using the coaxial line can be eliminated, which largely contributes to the performance improvement of the waveguide / strip line converter.

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

【図1】本発明の一実施例を示す、導波管/ストリップ
線路変換器の一部切り欠き斜視図である。
FIG. 1 is a partially cutaway perspective view of a waveguide / stripline converter showing an embodiment of the present invention.

【図2】図1の正面図である。FIG. 2 is a front view of FIG.

【図3】(A)及び(B)は、導体パターンの説明図で
ある。
3A and 3B are explanatory views of a conductor pattern.

【図4】従来例を示す、導波管/ストリップ線路変換器
の一部切り欠き斜視図である。
FIG. 4 is a partially cutaway perspective view of a waveguide / stripline converter showing a conventional example.

【符号の説明】[Explanation of symbols]

1 方形導波管 2 誘電体板 3 終端面 4 ストリップ線路 5 開口 6 フランジ 10 誘電体板 11 プローブ 12 同軸線路 13 ストリップ線路 15 切り欠き線 1 Rectangular Waveguide 2 Dielectric Plate 3 End Surface 4 Stripline 5 Opening 6 Flange 10 Dielectric Plate 11 Probe 12 Coaxial Line 13 Stripline 15 Notched Line

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 一端に電磁波導入用の開口を設け、他端
に終端面を設けた方形導波管と、同方形導波管の終端面
に対して直交する向きとし、前記開口部からみた取付位
置が開口の略中央となるように、同方形導波管の側面か
ら内部に挿入した誘電体基板とからなり、同誘電体基板
上に略十字状の導体パターンを設けて、略十字状の導体
パターンの一方を延長して、前記方形導波管の外部への
信号引き出し用パターンとし、同信号引き出し用パター
ンを前記方形導波管の外部でストリップ線路として形成
し、同方形導波管内に導入された電磁波の電界を前記略
十字状の導体パターンに結合させて、同導体パターンで
電気信号に変換してストリップ線路に伝えることを特徴
とする導波管/ストリップ線路変換器。
1. A rectangular waveguide having an opening for introducing an electromagnetic wave at one end and a terminating surface at the other end, and a direction orthogonal to the terminating surface of the rectangular waveguide, viewed from the opening. It consists of a dielectric substrate inserted inside from the side of the rectangular waveguide so that the mounting position is approximately in the center of the opening. One of the conductor patterns is extended to form a signal extraction pattern to the outside of the rectangular waveguide, and the signal extraction pattern is formed as a strip line outside the rectangular waveguide. A waveguide / strip line converter, characterized in that the electric field of the electromagnetic wave introduced into (1) is coupled to the substantially cross-shaped conductor pattern, converted into an electric signal by the conductor pattern and transmitted to a strip line.
【請求項2】 前記導体パターンが、前記信号引き出し
用パターンに対し、長さの異なる複数個の交叉するパタ
ーンを設けたものからなることを特徴とする請求項1記
載の導波管/ストリップ線路変換器。
2. The waveguide / strip line according to claim 1, wherein the conductor pattern is formed by providing a plurality of intersecting patterns having different lengths with respect to the signal extraction pattern. converter.
JP25100991A 1991-09-30 1991-09-30 Waveguide/strip line converter Pending JPH0590806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25100991A JPH0590806A (en) 1991-09-30 1991-09-30 Waveguide/strip line converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25100991A JPH0590806A (en) 1991-09-30 1991-09-30 Waveguide/strip line converter

Publications (1)

Publication Number Publication Date
JPH0590806A true JPH0590806A (en) 1993-04-09

Family

ID=17216285

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25100991A Pending JPH0590806A (en) 1991-09-30 1991-09-30 Waveguide/strip line converter

Country Status (1)

Country Link
JP (1) JPH0590806A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6396364B1 (en) 1998-12-22 2002-05-28 Telefonaktiebolaget Lm Ericsson (Publ) Broadband microstrip-waveguide junction
JP2007288568A (en) * 2006-04-18 2007-11-01 Furuno Electric Co Ltd Waveguide/microstrip line converter and its method
JP2011199692A (en) * 2010-03-23 2011-10-06 New Japan Radio Co Ltd Non-waveguide line/waveguide transformer
EP2629359A1 (en) 2012-02-20 2013-08-21 Fujitsu Limited Waveguide converter
CN113782935A (en) * 2021-08-19 2021-12-10 北京古大仪表有限公司 Microstrip-waveguide converter and radar level gauge

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6396364B1 (en) 1998-12-22 2002-05-28 Telefonaktiebolaget Lm Ericsson (Publ) Broadband microstrip-waveguide junction
JP2007288568A (en) * 2006-04-18 2007-11-01 Furuno Electric Co Ltd Waveguide/microstrip line converter and its method
JP2011199692A (en) * 2010-03-23 2011-10-06 New Japan Radio Co Ltd Non-waveguide line/waveguide transformer
EP2629359A1 (en) 2012-02-20 2013-08-21 Fujitsu Limited Waveguide converter
US9153851B2 (en) 2012-02-20 2015-10-06 Fujitsu Limited Waveguide converter
CN113782935A (en) * 2021-08-19 2021-12-10 北京古大仪表有限公司 Microstrip-waveguide converter and radar level gauge
CN113782935B (en) * 2021-08-19 2022-10-25 北京古大仪表有限公司 Microstrip-waveguide converter and radar level gauge

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