JPS58191503A - 伝送線路 - Google Patents

伝送線路

Info

Publication number
JPS58191503A
JPS58191503A JP57073821A JP7382182A JPS58191503A JP S58191503 A JPS58191503 A JP S58191503A JP 57073821 A JP57073821 A JP 57073821A JP 7382182 A JP7382182 A JP 7382182A JP S58191503 A JPS58191503 A JP S58191503A
Authority
JP
Japan
Prior art keywords
transmission line
tetrafluoroethylene resin
wave energy
transmission
stretched
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
JP57073821A
Other languages
English (en)
Other versions
JPH0113761B2 (ja
Inventor
Yosuke Suzuki
洋介 鈴木
Hajime Oki
一 大木
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.)
Junkosha Co Ltd
Original Assignee
Junkosha Co 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 Junkosha Co Ltd filed Critical Junkosha Co Ltd
Priority to JP57073821A priority Critical patent/JPS58191503A/ja
Priority to US06/483,684 priority patent/US4525693A/en
Publication of JPS58191503A publication Critical patent/JPS58191503A/ja
Publication of JPH0113761B2 publication Critical patent/JPH0113761B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01PWAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00Waveguides; Transmission lines of the waveguide type
    • H01P3/16Dielectric waveguides, i.e. without a longitudinal conductor

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 この発明は、誘電体線路1表面波線路(イメージ線路、
インシェラ線路を含む)、誘電体内装金属導波管および
これらの組合せの構成による少なくとも一部に誘電体を
用いた伝送線路に関する。
ミリ波、サブミリ波、光領域の波は伝送線路によって、
誘電体内モード、表面波モード、および導波管モードの
いずれか−っまたはこれらの任意の組合せとして伝送さ
れる。この際、誘電体を用いた伝送線路は可撓性に富む
ので、金属導波管の曲折部や金属導波管と機器間の接続
用等の部分結合用に好適に用いられ、更には単独線路と
しても小さな屈曲半径によって大きな自由度を持って布
設できるので最近特に注目されてきている。ところがこ
のような誘電体を用いた伝送線路においては、伝送波動
エネルギの電界方向(又は磁界方向)が回転してしまう
ため1.このような伝送線路を用いて伝送線路間の接合
又は機器との接合を行なった場合、実際に波動エネルギ
を入力して最大エネルギが出力される接合関係となるよ
うに個々に線路を調節しても、線路を移動させたり3時
間の経過により、出力が変動してしまう欠点がみられた
そこでこの発明は上記従来の欠点を除去した。
少なくとも一部に誘電体を用いた伝送線路を提供するこ
とを目的とする。
このためこの発明によれば、少なくとも一部に誘電体を
用いた波動エネルギ伝送部分が、電磁波の偏波面を長さ
方向に沿って保存する物理的状態を形成してなるように
する。この際、偏波面を保存する物理的状態は、電磁波
の電界面の回転を阻止するように電磁波波動エネルギの
伝搬速度を遅くする部分を長さ方向に少なくとも一条設
けることによって形成される。即ち、具体的には、誘電
体を用いた波動エネルギ伝送線路の横断面を長径の矩形
に対する割合が4/3以上の楕円とし、或いは横断面を
長方形とし、更には線路の全長に渡って密度を高めた構
成としたり、線路の全長に渡んて局部的なストレスを加
えた構成とすることによって目的が達成される。
また、少なくとも電磁波波動エネルギ伝送部分の誘電体
としては、延伸未焼成四弗化エチレン樹脂、延伸不完全
焼成四弗化エチレン樹脂、未延伸未焼成四弗化エチレン
樹脂、未延伸不完全焼成四弗化エチレン樹脂、未延伸焼
成四弗化エチレン樹脂の中から選んだ一種類又は複数種
類の樹脂体を用いれば、物理的、化学的にすぐれた伝送
線路を得ることができる。
なお、これら誘電体は例えば特公昭56−24241お
よび特開昭53−99955に示した製造方法により製
造する。
このような構成のこの発明による伝送線路によれば。
1)伝送線路の小曲率半径による引きまわしによっても
、電磁波の偏波面が変わらず、伝送線路間の接続或いは
電子機器との接続に当っても偏波面の一致が得られるの
で、伝送線路の再調整が不要となる。
2)偏波面が保存されるため、伝送信号の時間的分散を
防止できる。
3)偏波面が保存されるため、ファラデー効果等を用い
た方向性結合や電界強度検出に応用でき5− る。
等の効果が得られる。
次に図によってこの発明を更に詳細に説明する。
第1図はこの発明による伝送線路1の波動エネルギ伝送
部分の横断面を示す。この伝送線路1は。
例えば未延伸未焼成四弗化エチレン樹脂のラム押出し機
等による楕円形状のグイからの押し出しにより形成され
、矩形Sに対する長径りの長さの割合が4/3以上の楕
円状横断面を有し、線路の全長に渡って均一な断面形状
に保たれている。この構造の伝送線路lによれば電磁波
波動エネルギの電界方向は楕円の矩形方向に立ち回転す
ることがない。なお、単一モードの伝送の場合、この効
果が顕著である。
第2図はこの発明による異なる実施例を示す伝送線路2
の波動エネルギ伝送部分の横断面図を示す。この伝送線
路2はまず1例えば延伸未焼成四弗化エチレン樹脂テー
プを巻いて円柱状の線路3を得、この線路3の対向部を
外側から線路の全長に渡って焼くことによって密度を高
めた高密度対6− 間部4と5を得る。この密度を高めた高密度対向部4と
5とは、電磁波波動エネルギの伝搬速度を遅くする部分
でもあり、電磁波波動エネルギの電界面は両高密度対間
部4と5を結ぶ方向の直交方向に立ち、電界面は回転す
ることがない。
第3図はこの発明による更に異なる実施例を示す伝送線
路6の波動エネルギ伝送部分の横断面を示す。この伝送
線路6は横断面が長方形をなしており1例えば未焼成四
弗化エチレン樹脂を用いた押し出し成形によって成形さ
れる。また、未焼成四弗化エチレン樹脂テープを円柱状
に巻装後、長方形に押圧成形することもできる。
次に第4図に示すように、比重1.6の未延伸未焼成四
弗化エチレン樹脂を用いた押し出し成形によって矩形5
 m m 、長径8mmの第1図と同様な形状のコア材
(波動エネルギ伝送部分)7を得。
その外周に比重0.68の延伸焼成四弗化エチレン樹脂
テープを巻き付けてクラツド材8とした外径の長径が約
21mmの伝送線路9を1メ一トル得た。
この伝送線路9の両端を第5図に示すように円緋状とし
、金属導波管10に連接されたランチャ11に嵌入結合
し、−直線状に配置したもう一つの金属導波管10間に
伝送線路9の他端を同様に挿入する配置とした。なお、
この場合伝送線路9の長径が金属導波管の長辺と同一方
向になるように配置した。この配置において、一端の金
属導波管10から50GHzの電磁波を入力し、他端の
金属導波管10から出力を得たところ、この系の減衰量
は2dBであった。
この状態で、他端の金属導波管10の長辺が一端の金属
導波管の短辺の方向と一致するまで伝送線路9をひねり
、即ち90度伝送線路9をひねった場合の減衰量を測定
したところ1.減衰量の増加はたった1dBであった。
なお、上記と同一材料のコア材の横断面が真円でその直
径が7mmである物の外周に上記と同一材料クラツド材
を施して外径21mmとした従来の誘電体からなる伝送
線路を上記と同一条件で90度ひねって測定したところ
、減衰量の増加は10dBであったので9本発明による
伝送線路に古れば90度ひねりの場合の減衰量の増加は
1/10となり、著しい進歩が得られたことになる。
続いて上記のように一直線状に配置された伝送線路を第
6図に示すように曲げ半径39cmのU字状に配置せし
めて、一方の金属導波管から50GHzの電磁波を入力
して他方の金属導波管に出力させて、−直線状配置の場
合に対する減衰量の増加を測定したところ、増加量は0
.5 d Bであった。この値は従来の真円状伝送線路
の場合の約1/4であり、この発明による伝送線路9は
あらゆる場合において従来の伝送線路に比較して格段に
減衰量が少ないことがわかる。
更に、比重1゜6の未焼成四弗化エチレン樹脂テープを
巻いて直径7mmの真円状としてから外周コア材14を
得、その外周に比重0.68の延伸焼成四弗化エチレン
樹脂テープを巻いて外径21mmのクラッド部15とし
た伝送線路16を1メートル用意して上記と同様な減衰
量の測定をしたとこ9− ろ、上記と同様な結果を得た。
第8図はこの発明による多重線路を持った伝送線路17
の端部斜視図を示す。
この場合、電磁波の電界面の回転を阻止するように、電
磁波波動エネルギの伝搬速度を遅くする部分は3例えば
焼成高密度化四弗化エチレン樹脂条からなるコア材18
.19の二条からなり、外周を低密度四弗化エチレン樹
脂材からなるクラ・ノド材20によって覆われている。
以上の通りこの発明によれば、電磁波の電界面の回転を
阻止するように偏波面を長さ方向に沿って保存する物理
的状態を形成しているので、伝送線路の入出力端におけ
る電界面位置が明らかであり、前記のような諸効果が得
られる。
このような効果を得るためには、上記の実施例に限定さ
れるものではなく1例えば偏波面保存面が長さ方向に回
転していたり、線路の全長に渡って圧力等によるストレ
スを局部的に与えたり、ストレスを局部的に加えたい部
分のクラッド厚さおよび/またはその層の保護被覆厚さ
を厚くしてそ10− の実現をはかったり、線路の全長に渡って充填材を混入
させた部分を設けたり、外周部に金属体を配したり、他
の保護被覆を設けたり、更には線路の断面形状をこの発
明の実施例以外の形状にする誘電体に誘電率調整もしく
は着色の目的等で充填材を混入する等のこの発明の思想
の範囲内の変更を加えても、均等な効果を得ることがで
きる。
【図面の簡単な説明】
第1図から第4図はそれぞれ異なる例を示すこの発明に
よる伝送線路の横断面図、第5図はこの発明による伝送
線路の金属導波管との接合部を説明する斜視図、第6図
は伝送線路と金属導波管との接合配置状態を示す平面図
、第7図はこの発明による伝送線路の他の実施例を示す
横断面図、第8図はこの発明による更に他の例を示す伝
送線路の端部斜視図である。 1.2,6,9,16.17:  伝送線路。 4.5,12. 13:  高密度対向部。 7.14,18.i9:  コア材。 8.15. 2oo’  クラツド材。 特許出願人 株式会社 潤 工 社 「 FIG、4 FIG、5

Claims (1)

  1. 【特許請求の範囲】 1)誘電体を用いた電磁波波動エネルギ輝送部分が、電
    磁波の偏波面を長さ方向に沿って保存する物理的状態を
    形成してなる伝送線路。 2、特許請求の範囲第1項に記載の伝送線路において、
    偏波面を保存する物理的状態は、電磁波の電界面の回転
    を阻止するように電磁波波動エネルギの伝搬速度を遅く
    する部分を長さ方向に少なくとも一条設けることによっ
    て形成されることを特徴とする伝送線路。 3)特許請求の範囲第1項又は第2項のいずれかに記載
    の伝送線路において、少なくとも波動エネルギ伝送部分
    は、延伸未焼成四弗化エチレン樹脂、延伸不完全焼成四
    弗化エチレン樹脂、未延伸未焼成四弗化エチレン樹脂、
    未延伸不完全焼成四弗化エチレン樹脂、未延伸焼成四弗
    化エチレン樹脂の中から選んだ材料からなる横断面楕円
    形状をなし、その長径の矩形に対する割合が4/3以七
    としてなることを特徴とする伝送線路。 4)特許請求の範囲第1項又は第2項のいずれかに記載
    の伝送線路において、少なくとも波動エネルギ伝送部分
    は、延伸未焼成四弗化エチレン樹脂、延伸不完全焼成四
    弗化エチレン樹脂、未延伸未焼成四弗化エチレン樹脂、
    未延伸不完全焼成四弗化エチレン樹脂、未延伸焼成四弗
    化エチレン樹脂の中から選んだ材料からなり横断面長方
    形であることを特徴とする伝送線路。 5)特許請求の範囲第1項又は第2項のいずれかに記載
    の伝送線路において、波動エネルギ伝送部分は、少なく
    とも一部分が線路の全長に渡ってその密度を高めた構成
    としてなることを特徴とする伝送線路。 ら 4)特許請求の範囲第1項又は第2項のいずれかに記載
    の伝送線路において、少なくとも波動エネルギ伝送部分
    は、線路の全長に渡って局部的ストレスを加えて構成さ
    れることを特徴とする伝送線路。
JP57073821A 1982-05-01 1982-05-01 伝送線路 Granted JPS58191503A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP57073821A JPS58191503A (ja) 1982-05-01 1982-05-01 伝送線路
US06/483,684 US4525693A (en) 1982-05-01 1983-04-11 Transmission line of unsintered PTFE having sintered high density portions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57073821A JPS58191503A (ja) 1982-05-01 1982-05-01 伝送線路

Publications (2)

Publication Number Publication Date
JPS58191503A true JPS58191503A (ja) 1983-11-08
JPH0113761B2 JPH0113761B2 (ja) 1989-03-08

Family

ID=13529195

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57073821A Granted JPS58191503A (ja) 1982-05-01 1982-05-01 伝送線路

Country Status (2)

Country Link
US (1) US4525693A (ja)
JP (1) JPS58191503A (ja)

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