JPH0194701A - Transmission line - Google Patents
Transmission lineInfo
- Publication number
- JPH0194701A JPH0194701A JP25297287A JP25297287A JPH0194701A JP H0194701 A JPH0194701 A JP H0194701A JP 25297287 A JP25297287 A JP 25297287A JP 25297287 A JP25297287 A JP 25297287A JP H0194701 A JPH0194701 A JP H0194701A
- Authority
- JP
- Japan
- Prior art keywords
- slit
- waveguide
- conductor
- coaxial line
- rectangular 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims description 13
- 239000004020 conductor Substances 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims description 17
- 230000005672 electromagnetic field Effects 0.000 claims 1
- 239000012212 insulator Substances 0.000 abstract description 2
- 102100027340 Slit homolog 2 protein Human genes 0.000 abstract 5
- 101710133576 Slit homolog 2 protein Proteins 0.000 abstract 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
〔産業上の利用分野〕
この発明は、入出力端子間の距離を自由に変えられ、か
つ低伝送損失でその周波数特性が平坦な特性を有する伝
送線路に関するものである。
〔従来の技術〕
第3図は1例えば特開昭56−47101号公報に示さ
れ九従来の伝送線路であり1図におりて(1)は矩形導
波管、[Industrial Application Field] The present invention relates to a transmission line that can freely change the distance between input and output terminals, has low transmission loss, and has flat frequency characteristics. [Prior Art] Fig. 3 shows a conventional transmission line as shown in, for example, Japanese Patent Application Laid-Open No. 56-47101. In Fig. 1, (1) is a rectangular waveguide;
【2)は導波管のH己の中央に軸方向に沿って設
は次スリットである。(3)は入力端、(4)は出力端
、C5)は同軸線路であり、その内導体は矩形導波管(
1)のスリット(2)を通って導波管内に挿入されてい
る。(6)は導波管の管の一端に接続された無反射終端
器である。(7)は入力端(3)と同軸線路【5)の間
に入れられ九アインレー゛夕であシ、電磁波は入力端か
ら同軸線路の方へのみ伝送される。(8)は同軸線路(
5)の外導体の支持台であシ、この台は同軸線路の内導
体が矩形導波管のスリット(2)を通して導波管内に挿
入される長さを一定に保ちつつ、スリン゛トに沿って移
動できるようにするものである。
次に動作について説明する。入力端(3)に加えた電磁
波はアインV−タ(7)ヲ経て同軸線路151に伝送さ
れ、矩形導波管(1)のスリット(2)を通って、矩形
導波管内に突出し几同軸線路の内導体によって矩形導波
管内にそのエネルギーの一部を伝える。同軸線路から矩
形導波管に伝えられず反射波とじて再び同軸線路を逆方
向へ伝わっていく電磁波はアイソレータ(7)に入り、
アインV−夕によってそのエネルギーを吸収さt′L、
入力端(3)には出力されない。矩形導波管内に伝えら
れ九電磁波は同軸線路の内導体から導波管の軸方向の双
方に進行する。
一方は出力端(4)の方向へ進み出力端(4)に至シ、
他方は無反射終端器(6)に吸収される。無反射終端器
(6) r!これが無い場合、導波管の出力端(4)の
他端における不用な反射波が発生し出力端(4)の方向
へ進み、同軸線路+15)の内導体から直接出力端(4
)に向かう電磁波と干渉するのを防ぐ役目tする。
同軸線路(5)の外導体の支持台(8)は入力端(3)
から同軸線絡【5)、アイソレータ(7)、さらに導波
管内にスリット[2)全通って挿入されている同軸線路
の内導体までを、スリットに沿って移動することができ
、このようにして得られ几伝送線路#′i、矩形導波管
(1)に設けるスリット(2)の長さにほぼ等しい距離
だけ入力端(3)と出力端(4)の間の距離を変えるこ
とができる。
〔発明が解決しようとする問題点〕
従来の伝送線路は以上のように構成されているので、同
軸線路の内導体とスリット(2)とが接触レジヨードし
ないよう充分な巾を持つスリットを設けなければならな
い0然るに、ミリ波帯等の高周波帯域の導波管ではその
断面寸法が小さくなシ。
スリットの巾が導波管の巾に較べ無視できなくなり、ス
リットからの電磁波の漏れが大さくなるという問題点か
ありtO
この発明ri、上記のような問題点を解消する九めにな
され次もので、にバンド以上の周波数帯の導波管に於い
てスリット巾をニジ挾くすることかで@1スリットから
の電磁波の漏洩の程度を軽減し几伝送線路を得ることを
目的とする。
〔問題点を解決するための手段〕
この発明に係る伝送線路に、従来の同軸線路の内導体の
代わりに、薄い金属板tその支持と導波管のスリットと
の絶縁を目的とする薄い絶縁体シートで挾んたものft
2スリンh2通して導波管内に挿入したものである。
〔作用〕
この発明における導波管内に挿入される薄い金属板は、
その支持と4波管のスリットとの絶縁の九めの薄い絶縁
体のシートで挾まt′L、導波管内への挿入部の厚みを
小さくし、絶縁シートによってスリットとの接触による
ショートから保護されておシ、スリットの巾を従来より
小さな寸法にすることができる〇
〔発明の実施例〕
以下、この発明の一実施例を図について説明する。第1
図において、C1)は矩形導波管で、(2)は矩形導波
管(1)に設けられ友スリットであり、(3)は入力端
、(9)は入力端の同軸線路からαQの金属板内導体へ
変換する同軸線路変換コネクタである。金属板内導体α
Qri2枚の絶縁シート(11で挾まれておシ。
さらに絶11−/−ト(ロ)は2個のブロックから成る
台(8) Kよって挾まれ支持されている。金属板内導
体α0、及び絶縁シート(ロ)はスリン) (211通
って矩形導波管(11の中に挿入されてiて、スリット
に沿って台(8)と共に導波管の軸方向に移動すること
ができる0
図2は金属板内導体αりの軸方向に垂直な面での台(8
)の断面図である0台(8)は図2において左右2個の
ブロックに分nておシ絶縁シート’l挾むことにより支
持し、また金属板内導体αqと共に構成される伝送線路
の外導体としての役目を持つ。
入力端(3)に加えられ九電磁波は同軸線路変換コネク
タ(9)を経て、金属板内導体αat持ち台(8) e
外導体とする伝送線路を伝わり、矩形導波管(1)K設
けられ九スリット(2)から導波管内に挿入された金属
板内導体αOよシ導波管内にエネルギーの】部を伝える
。矩形導波管(1)は従来の装置と同様にその一端が出
力端であり%他端にば無反射終端が接続され不要な反射
波の発生を防いでいる。
金属板内導体GOは絶縁シート0υによって、スリン)
t2)との接触によるショートから保護されつつ、ス
リットに石って移動することができる0この友め金属板
内導体αq、及び絶縁シートaυとスリット(21の側
面とのすき間を小さくすることができ、ま九金属板内導
体OIと絶縁シート0υの厚み金極力薄くすることによ
ってスリット巾を減少させることができる。
なお、上記実施例では導波管として矩形導波管(1)の
場合について示しtが、導波管としてシングルリッジ導
波管の場合にも同様の効果を奏する。
第4図において、(2)はシングルリッジ導波管でリッ
ジo3t−有しない面にスリット(21を切ることによ
って広帯域な伝送線路を構成できる。
〔発明の効果〕
以上のように、この発明によれば矩形導波管のスリット
2通して導波管内に挿入される内導体部を2枚の絶縁シ
ートで挾ん疋金属板で構成し友ので、スリット幅を小さ
くすることができ、よってスリットからの電磁波の漏れ
を減少させることかで′@、入出力端間の距#Ivi−
変化させる装置として。
低損失伝送路である導波管を用いる利点t−< !j波
帯等の高周波帯域に生かすことができる。[2] is a slit placed along the axial direction in the center of the waveguide. (3) is the input end, (4) is the output end, and C5) is the coaxial line, the inner conductor of which is a rectangular waveguide (
1) is inserted into the waveguide through the slit (2). (6) is a non-reflection terminator connected to one end of the waveguide tube. (7) is inserted between the input end (3) and the coaxial line [5] and is a nine-wire array, and electromagnetic waves are transmitted only from the input end to the coaxial line. (8) is the coaxial line (
5) This is a supporting stand for the outer conductor of the coaxial line, and this stand holds the inner conductor of the coaxial line in the slit while keeping the length of insertion into the waveguide constant through the slit (2) of the rectangular waveguide. It allows you to move along. Next, the operation will be explained. The electromagnetic wave applied to the input end (3) is transmitted to the coaxial line 151 through the input terminal (7), passes through the slit (2) of the rectangular waveguide (1), protrudes into the rectangular waveguide, and is transmitted to the coaxial line 151. The line's inner conductor transfers some of that energy into the rectangular waveguide. Electromagnetic waves that are not transmitted from the coaxial line to the rectangular waveguide but are transmitted in the opposite direction along the coaxial line as reflected waves enter the isolator (7).
Its energy is absorbed by Ain V-Yu t'L,
It is not output to the input terminal (3). The nine electromagnetic waves transmitted within the rectangular waveguide travel in both axial directions of the waveguide from the inner conductor of the coaxial line. One goes in the direction of the output end (4) and reaches the output end (4),
The other is absorbed by the non-reflection terminator (6). Non-reflection terminator (6) r! In the absence of this, an unnecessary reflected wave at the other end of the output end (4) of the waveguide will be generated and travel in the direction of the output end (4), directly from the inner conductor of the coaxial line +15) to the output end (4).
) to prevent interference with electromagnetic waves directed towards the earth. The support base (8) for the outer conductor of the coaxial line (5) is connected to the input end (3)
It is possible to move along the slit from the coaxial line [5] to the isolator (7) and further to the inner conductor of the coaxial line, which is inserted completely through the slit [2] into the waveguide. The distance between the input end (3) and the output end (4) of the transmission line #'i obtained by can. [Problems to be solved by the invention] Since the conventional transmission line is constructed as described above, it is necessary to provide a slit with a sufficient width so that the inner conductor of the coaxial line and the slit (2) do not come into contact with each other. However, waveguides for high frequency bands such as millimeter wave bands have small cross-sectional dimensions. There is a problem that the width of the slit cannot be ignored compared to the width of the waveguide, and the leakage of electromagnetic waves from the slit increases. The purpose is to reduce the degree of electromagnetic wave leakage from the @1 slit by narrowing the slit width in the waveguide for the frequency band or higher, thereby obtaining a transparent transmission line. [Means for Solving the Problems] In the transmission line according to the present invention, in place of the inner conductor of the conventional coaxial line, a thin metal plate t is provided with a thin insulator for the purpose of supporting the thin metal plate and insulating it from the slit of the waveguide. Things held between body sheets ft
It is inserted into the waveguide through 2 slin h2. [Function] The thin metal plate inserted into the waveguide in this invention is
The thickness of the part inserted into the waveguide is reduced, and the insulating sheet prevents short circuits due to contact with the slit. Embodiment of the Invention An embodiment of the invention will be described below with reference to the drawings. 1st
In the figure, C1) is a rectangular waveguide, (2) is a friend slit provided in the rectangular waveguide (1), (3) is the input end, and (9) is the input end of the coaxial line of αQ. This is a coaxial line conversion connector that converts to a conductor inside a metal plate. Conductor α in metal plate
Qri is sandwiched between two insulating sheets (11) and supported by a stand (8) consisting of two blocks.Conductor α0 in the metal plate, and the insulating sheet (B) is inserted into the rectangular waveguide (11 through 211 and can be moved in the axial direction of the waveguide along the slit with the stand (8)). Figure 2 shows a stand (8
), which is a cross-sectional view of unit 0 (8), is divided into two blocks on the left and right in Fig. 2, and is supported by sandwiching an insulating sheet, and is also a transmission line constructed with a conductor αq in a metal plate. It serves as an outer conductor. The nine electromagnetic waves applied to the input end (3) pass through the coaxial line conversion connector (9) and are transferred to the metal plate conductor αat holder (8) e
The energy is transmitted through the transmission line which is the outer conductor, and is transmitted into the waveguide through the metal plate conductor αO inserted into the waveguide through nine slits (2) provided in the rectangular waveguide (1). As with the conventional device, the rectangular waveguide (1) has one end serving as an output end, and the other end connected to a non-reflection termination to prevent generation of unnecessary reflected waves. The conductor GO inside the metal plate is lined with an insulating sheet 0υ)
It is possible to reduce the gap between the conductor αq in this friend metal plate and the side surface of the slit (21) and the insulating sheet aυ, which can move in the slit while being protected from short circuits due to contact with t2). The slit width can be reduced by making the thickness of the conductor OI in the metal plate and the insulating sheet 0υ as thin as possible.In the above embodiment, the waveguide is a rectangular waveguide (1). The same effect can be obtained when the waveguide is a single ridge waveguide. In Fig. 4, (2) is a single ridge waveguide with a slit (21 [Effects of the Invention] As described above, according to the present invention, the inner conductor portion inserted into the waveguide through the two slits of the rectangular waveguide is covered with two insulating sheets. Since it is made of sandwiched metal plates, the slit width can be made smaller, thereby reducing the leakage of electromagnetic waves from the slit.
As a device to change. Advantages of using a waveguide as a low-loss transmission line t-<! It can be used in high frequency bands such as the J-wave band.
第1図はこの発明の一実施例による伝送線路装置を示す
構成図、第2図は金属板内導体支持を示す断面図、第3
図はこの発明の他の実施例を示す構成図、第4図は従来
における構成図である。
図において、(1)・・・矩形導波管、(2)・・・ス
リット。
+3)・・・入力端、(4) ・・・出力端、(5)・
・・同軸線路、(6)・・・無反射終端器、(7)・・
・アイソレータ、(8)・・・台* (9)・・・同軸
線路変換コネクタ、 (10・・・金属板内導体、αル
・・・絶縁シート、(2)・・・シングルリッジ導波管
、aAI・・・リッジ0
なお、図中同一符号は同一、又は相当部分を示す。FIG. 1 is a configuration diagram showing a transmission line device according to an embodiment of the present invention, FIG. 2 is a sectional view showing conductor support in a metal plate, and FIG.
The figure is a configuration diagram showing another embodiment of the present invention, and FIG. 4 is a configuration diagram of a conventional system. In the figure, (1)... rectangular waveguide, (2)... slit. +3)...Input end, (4)...Output end, (5).
... Coaxial line, (6) ... Reflection-free terminator, (7) ...
・Isolator, (8)...stand* (9)...coaxial line conversion connector, (10...conductor in metal plate, alpha loop...insulating sheet, (2)...single ridge waveguide Pipe, aAI...Ridge 0 Note that the same reference numerals in the drawings indicate the same or corresponding parts.
Claims (1)
ットを設け、同軸線路の内導体を2枚の絶縁シートで挾
んだ金属板内導体に変換し上記スリットを通して上記矩
形導波管内に挿入することによつて同軸線路と矩形導波
管との相互間で電磁界の結合を図り、上記矩形導波管の
一端に無反射終端器、他端を出力端とし、上記同軸線路
を入力端とし、スリットに沿つて上記金属板内導体を移
動させることにより入出力端間の距離を変えられること
を特徴とする伝送線路。A slit is provided in the center of the H-plane of the rectangular waveguide in the axial direction of the waveguide, and the inner conductor of the coaxial line is converted into a metal plate inner conductor sandwiched between two insulating sheets, and the rectangular waveguide is passed through the slit. By inserting the coaxial line into the wave tube, electromagnetic fields are coupled between the coaxial line and the rectangular waveguide. A transmission line characterized in that the line is an input end, and the distance between the input and output ends can be changed by moving the conductor in the metal plate along the slit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25297287A JPH0194701A (en) | 1987-10-07 | 1987-10-07 | Transmission line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25297287A JPH0194701A (en) | 1987-10-07 | 1987-10-07 | Transmission line |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0194701A true JPH0194701A (en) | 1989-04-13 |
Family
ID=17244714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP25297287A Pending JPH0194701A (en) | 1987-10-07 | 1987-10-07 | Transmission line |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0194701A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005523597A (en) * | 2002-04-17 | 2005-08-04 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Waveguide communication system |
-
1987
- 1987-10-07 JP JP25297287A patent/JPH0194701A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005523597A (en) * | 2002-04-17 | 2005-08-04 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Waveguide communication system |
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