JPS6393202A - Terminator for extralow temperature - Google Patents
Terminator for extralow temperatureInfo
- Publication number
- JPS6393202A JPS6393202A JP23977086A JP23977086A JPS6393202A JP S6393202 A JPS6393202 A JP S6393202A JP 23977086 A JP23977086 A JP 23977086A JP 23977086 A JP23977086 A JP 23977086A JP S6393202 A JPS6393202 A JP S6393202A
- Authority
- JP
- Japan
- Prior art keywords
- waveguide
- radio wave
- wave absorber
- terminator
- springs
- 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
- 239000006096 absorbing agent Substances 0.000 claims abstract description 37
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 239000010935 stainless steel Substances 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- -1 Berryu 1 Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- MOFOBJHOKRNACT-UHFFFAOYSA-N nickel silver Chemical compound [Ni].[Ag] MOFOBJHOKRNACT-UHFFFAOYSA-N 0.000 description 1
- 239000010956 nickel silver Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Non-Reversible Transmitting Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔概要〕
一端を閉じた導波管内部に電波吸収体を配置する終端器
に於いて、該導波管の内壁との間に弾性を有する電波吸
収体の支持体を設ける筒車な溝工：１で、超低温時にお
いても導波管内壁と電波吸収体との隙間を一定とする超
低温用終端器。Detailed Description of the Invention [Summary] In a terminator in which a radio wave absorber is disposed inside a waveguide with one end closed, a support for the radio wave absorber having elasticity between it and the inner wall of the waveguide. 1. An ultra-low-temperature terminator that maintains a constant gap between the waveguide inner wall and the radio wave absorber even at ultra-low temperatures.
本発明はマイクロ波送受信機に使用する導波管の終端器
に関するものである。The present invention relates to a waveguide terminator used in a microwave transceiver.
特に、宇宙等で超低温に冷却される終端器においては、
終端器を構成する各部材の熱膨張差を吸収して導波管内
壁と電波吸収体との隙間を一定に保ち、その電気特性を
安定させる超低温用終端器が要求されている。In particular, in terminators that are cooled to ultra-low temperatures in space, etc.
There is a need for a terminator for ultra-low temperatures that absorbs the difference in thermal expansion of each member constituting the terminator, maintains a constant gap between the inner wall of the waveguide and the radio wave absorber, and stabilizes its electrical characteristics.
従来広く使用されている超低温用終端器は第３図の外観
斜視図に示すように、例えば、ステンレス、洋銀、キュ
プロニッケル材の既成の引き抜き風波管を所定の長さに
切断し、矢印Ａ方向端面に／ｒ！ｓ、波吸収体１３の締
付は用の孔を設けた同一材質の底板と、その反対側に同
じく同一材質で相手と粘合する孔を形成したフランジを
溶着した導波管２に、第４図に示すように前記４波管２
の内寸に遊合する矩形断面を有したフェライト粉末によ
り片側端面を斜めに成形した超低温でも使用できる電波
吸収体３を挿入して、導波管２内壁及び、底板内面と電
波吸収体３とをエポキシ系の接着剤４゛で固着している
。As shown in the external perspective view of Fig. 3, the ultra-low temperature terminator that has been widely used in the past is made by cutting an existing drawn wind wave tube made of stainless steel, nickel silver, or cupronickel into a predetermined length, and then cutting it in the direction of arrow A. /r on the end face! s. The wave absorber 13 is tightened by attaching a bottom plate made of the same material with a hole and a flange made of the same material with holes formed on the opposite side to the waveguide 2. As shown in Figure 4, the four-wave tube 2
A radio wave absorber 3, which can be used even at ultra-low temperatures and is made of ferrite powder and has a rectangular cross section that matches the inner dimensions of the waveguide 2 and whose one end face is formed obliquely, is inserted to connect the inner wall of the waveguide 2, the inner surface of the bottom plate, and the radio wave absorber 3. are fixed with epoxy adhesive 4.
又、他の構造の終端器としては第５図に示すように、上
記導波管２の底板に孔を設け、導波管２の内寸に整合す
る合成樹脂製の電波吸収体３を挿入して固定用ねじ４で
矢印Ａ方向に締付は固着した状態のものもある。In addition, as shown in FIG. 5, as a terminator with another structure, a hole is provided in the bottom plate of the waveguide 2, and a radio wave absorber 3 made of synthetic resin that matches the inner dimensions of the waveguide 2 is inserted. In some cases, the fixing screw 4 is firmly tightened in the direction of arrow A.
以上説明の従来の超低温用終端器で問題となるのは、ス
テンレス製の導波管の底板に電波吸収体を接着剤、又は
固定用ねじで固着して電気特性を調整しているため、そ
の終端器が宇宙等において数１０°にの超低温に冷却さ
れると、ステンレス製の導波管に対して超低温時の熱収
縮率が大きいフェライト製の電波吸収体が収縮量が大き
くなる点である。The problem with the conventional ultra-low temperature terminator described above is that the electrical characteristics are adjusted by fixing the radio wave absorber to the bottom plate of the stainless steel waveguide with adhesive or fixing screws. When the terminator is cooled to an ultra-low temperature of several tens of degrees in space, etc., the ferrite radio wave absorber, which has a higher thermal contraction rate at ultra-low temperatures than the stainless steel waveguide, will shrink more. .
そのため、接着剤で固着した構造の終端器においては、
その収縮差により接着部が剥離して導波管よりマイクロ
波を吸収する電波吸収体が脱落の恐れが発生し、又、ね
じ締め構造の終端器おいてもその収縮差により締付は面
、導波管内面とに隙間ができて機器の振動或いは衝撃に
より電波吸収体に移動が生じる等終端器の電気的特性の
悪化或いは、不安定となる要因となっている。Therefore, in terminators that are fixed with adhesive,
Due to the difference in shrinkage, the adhesive part may peel off, causing the radio wave absorber that absorbs microwaves from the waveguide to fall off. Also, even in a terminal device with a screw-tight structure, due to the difference in shrinkage, the adhesive part may peel off, and the tightening may be difficult due to the difference in shrinkage. A gap is formed between the inner surface of the waveguide and the radio wave absorber moves due to vibration or impact of the equipment, which causes the electrical characteristics of the terminator to deteriorate or become unstable.
本発明は以上のような状況から超低温においても電波吸
収体の保持を確実に行える超低温用終端器の提供を目的
としたものである。In view of the above-mentioned circumstances, it is an object of the present invention to provide a terminator for ultra-low temperatures that can reliably maintain a radio wave absorber even at ultra-low temperatures.
本発明では、導波管２の内部で電波吸収体１３を支持す
る弾性を備えた支持部材を設ける。In the present invention, an elastic support member that supports the radio wave absorber 13 is provided inside the waveguide 2 .
弾性を備えた支持部材としては、第１図に示すコイルば
ね１５とばね保持軸１６、又は第２図に示す板ばね１５
−Ｌ １５−２等を使用することができる。As a support member with elasticity, a coil spring 15 and a spring holding shaft 16 shown in FIG. 1, or a leaf spring 15 shown in FIG.
-L 15-2 etc. can be used.
即ち本発明においては、導波管２に対し超低温時の熱収
縮率が大きい電波吸収体１３を導波管２の内壁との隙間
に弾性を備えた支持部材、即ちコイルばね１５．又は板
ばね１５−２を挿入しているため、この構造の終端器が
数１０ ’にの超低温に冷却されても、冷却による各部
材の収縮差で締付は面の隙間発生及び、導波管２の内壁
と電波吸収体１３との隙間の変化に対し、底板との間の
板ばね１５〜１゜及び内壁との間のコイルばね１５．又
は板ばね１５−２の弾性で電波吸収体１３が所定の位置
で保持でき、室温において組立調整した終端器の電気的
特性は超低温においても十分に確保ができる。That is, in the present invention, the radio wave absorber 13, which has a large thermal contraction rate at ultra-low temperatures, is attached to the waveguide 2 in the gap between it and the inner wall of the waveguide 2. Or, because the leaf spring 15-2 is inserted, even if the terminator with this structure is cooled to an ultra-low temperature of several tens of degrees, the tightening will be difficult due to the difference in shrinkage of each member due to cooling, which will cause gaps between the surfaces and waveguide. In response to changes in the gap between the inner wall of the tube 2 and the radio wave absorber 13, the leaf spring 15 to 1° between the bottom plate and the coil spring 15. Alternatively, the radio wave absorber 13 can be held in a predetermined position by the elasticity of the leaf spring 15-2, and the electrical characteristics of the terminator assembled and adjusted at room temperature can be sufficiently ensured even at extremely low temperatures.
以下第１図〜第３図について本発明の一実施例を説明す
る。An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
図中において、第３図と同一部材には同一記号が付しで
あるが、その他の１３はマイクロ波を吸収体する電波吸
収体、１５は弾性により電波吸収体を所定の位置に支持
するばね、１６はそのばねを保持するばね保持軸である
。In the figure, the same members as in Fig. 3 are given the same symbols, except that 13 is a radio wave absorber that absorbs microwaves, and 15 is a spring that elastically supports the radio wave absorber in a predetermined position. , 16 is a spring holding shaft that holds the spring.
第１図は本実施例による超低温用終端器の断面図で示し
、電波吸収体１３は、導波管２の内寸に対して一定の隙
間が設けて配置できる大きさの矩形断面を有し、片側端
面が斜めにフェライト粉末より成形して反対側に取付は
用のねし孔を設けて、超低温時においてもマイクロ波を
吸収する電波吸収体である。FIG. 1 is a cross-sectional view of the ultra-low temperature terminator according to this embodiment, in which the radio wave absorber 13 has a rectangular cross section large enough to be placed with a certain gap relative to the inner dimensions of the waveguide 2. It is a radio wave absorber that absorbs microwaves even at extremely low temperatures, with one end face obliquely molded from ferrite powder and a mounting hole provided on the other side.
コイルばね１５は、弾力性を有する同種類の金属例えば
、ばね用ステンレス、ベリリュウム銅、ばね用燐青銅等
の線材を内径が前記ばね用軸６より大きな寸法でコイル
状に巻いたばねである。The coil spring 15 is a spring made by winding a wire material of the same type of elastic metal such as stainless steel for springs, beryllium copper, phosphor bronze for springs, etc. into a coil shape with an inner diameter larger than the spring shaft 6.
ばね用軸１６は、上記導波管２と熱膨張係数がほぼ等し
い金属例えば、ステンレス、ベリリュウ１、銅、燐青銅
等より成形した小ねじである、上記部材を使用して超低
温用終端器の構築は、従来と同一構造の導波管２にばね
用軸１６の挿入する孔を４方の側壁に形成し、その導波
管２の内部に上記電波吸収体１３を挿入して内壁との隙
間が均−となるように導波管２の底板に当接させて固定
用ねじ４で固着し、内壁との隙間にコイルばね１５を嵌
入してそのコイルばね１５をばね用軸１６で移動しない
ように保持することにより、超低温時においてもコイル
ばね１５の弾力で電波吸収体１３を支持するので終端器
の電気的特性が確保できる。The spring shaft 16 is a small screw made of a metal whose coefficient of thermal expansion is approximately equal to that of the waveguide 2, such as stainless steel, Berryu 1, copper, phosphor bronze, etc. To construct the waveguide 2, which has the same structure as the conventional one, holes into which the spring shafts 16 are inserted are formed in the four side walls, and the radio wave absorber 13 is inserted into the inside of the waveguide 2 to connect it to the inner wall. Place it in contact with the bottom plate of the waveguide 2 so that the gap is even, and fix it with the fixing screw 4, fit the coil spring 15 into the gap with the inner wall, and move the coil spring 15 with the spring shaft 16. By holding the wave absorber 13 in such a manner that the wave absorber 13 is not heated even at extremely low temperatures, the electromagnetic wave absorber 13 is supported by the elasticity of the coil spring 15, so that the electrical characteristics of the terminator can be ensured.
又、第２図の断面図に示すように、上記導波管２と線膨
張係数が略等しくばね性を有する金属例えば、ばね用ス
テンレス、ベリリュウム銅、ばね用燐青銅等の薄板材料
より板ばね１５−１．１５−２を成形し、導波管２の内
部に挿入した電波吸収体１３を板ばね１５−１を介して
底板に締着し、導波管２の内壁の４面と電波吸収体１３
との隙間に板ばね１５−２を嵌入する他の実施例におい
ても超低温時の電気的特性が確保できる。In addition, as shown in the cross-sectional view of FIG. 2, a plate spring is made of a thin plate material such as a metal having spring properties that has a coefficient of linear expansion approximately equal to that of the waveguide 2, such as stainless steel for springs, beryllium copper, and phosphor bronze for springs. 15-1.15-2 is molded and the radio wave absorber 13 inserted into the inside of the waveguide 2 is fastened to the bottom plate via the leaf spring 15-1, and the four inner walls of the waveguide 2 and the radio wave Absorber 13
In another embodiment in which the leaf spring 15-2 is fitted into the gap between the two, electrical characteristics at extremely low temperatures can be ensured.
以上説明したように本発明によれば極めて簡単な構成で
、室温で組立した終端器が数１０”Ｋの超低温時におい
ても電気的特性が安定する等、著しい信顛性の効果が期
待でき工業的には極めて有用である。As explained above, the present invention has an extremely simple configuration, and a terminator assembled at room temperature can be expected to have significant reliability effects, such as stable electrical characteristics even at ultra-low temperatures of several tens of degrees K. It is extremely useful.
第１図は本発明の一実施例による超低温用Ｐ、端器を示
す断面図、
第２図は本発明の他の実施例による超低温用終端器を示
す断面図、
第３図は超低温冷却用終端器の外観を示す斜視図、
第４図は従来の超低温用終端器を示す断面図、第５図は
従来の他の超低温用終端器を示す断面図である。
図において、
２は導波管、 ４は固定用ねじ、１３は電波吸収
体、
１５はコイルばね、 １５−Ｌ１２−２は板ばね、１
６はばね保持軸、
４イこａＦｆｌｉ！４ｆＪｒ：ｚｓ＃４６３Ｍ／’Ｎｕ
ｔ＄ｔＫｒｒｌｆｒｔｆｎｍ第１図
ｔヒ：内夫一方芒ト（ンりにＦＩ Ｂ４合一 ）ｔｌｌ
ＺｆＦＩξ尽ｌ幽輸茅４褐凌ψφａ図第２図
第３図
第４図
第５図
１反普
［４
１＠必Fig. 1 is a sectional view showing a terminal device for ultra-low temperature use according to an embodiment of the present invention; Fig. 2 is a sectional view showing a terminator for ultra-low temperature use according to another embodiment of the present invention; Fig. 3 is a sectional view showing a terminal device for ultra-low temperature use according to another embodiment of the present invention; FIG. 4 is a sectional view showing a conventional terminator for ultra-low temperature, and FIG. 5 is a sectional view showing another conventional terminator for ultra-low temperature. In the figure, 2 is a waveguide, 4 is a fixing screw, 13 is a radio wave absorber, 15 is a coil spring, 15-L12-2 is a leaf spring, 1
6 is the spring holding shaft, 4 is aFfli! 4fJr:zs#463M/'Nu
t$tKrrlfrtfnmFigure 1 thi: Uchio one hand awn (nri ni FI B4 union) tll
Zf FI
Claims (3)
１３）を配置してなる終端器に於いて、該導波管（２）
の内壁部に該電波吸収体（１３）を支持する弾性を備え
た支持部材を設け、内壁との間に所定の隙間を保持する
ことを特徴とする超低温用終端器。(1) A radio wave absorber (
13), the waveguide (2)
An ultra-low temperature terminator characterized in that an elastic support member for supporting the radio wave absorber (13) is provided on the inner wall of the device, and a predetermined gap is maintained between the support member and the inner wall.
軸（１６）からなる特許請求の範囲第１項記載の超低温
用終端器。(2) The ultra-low temperature terminator according to claim 1, wherein the support member comprises a coil spring (15) and a spring holding shaft (16).
らなる特許請求の範囲第１項記載の超低温用終端器。(3) The ultra-low temperature terminator according to claim 1, wherein the support member is a leaf spring (15-1, 15-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23977086A JPS6393202A (en) | 1986-10-07 | 1986-10-07 | Terminator for extralow temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23977086A JPS6393202A (en) | 1986-10-07 | 1986-10-07 | Terminator for extralow temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6393202A true JPS6393202A (en) | 1988-04-23 |
Family
ID=17049648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23977086A Pending JPS6393202A (en) | 1986-10-07 | 1986-10-07 | Terminator for extralow temperature |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6393202A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU178658U1 (en) * | 2017-11-14 | 2018-04-16 | Акционерное общество "Научно-исследовательский институт Приборостроения имени В.В. Тихомирова" | WAVE WAVE LOAD |
-
1986
- 1986-10-07 JP JP23977086A patent/JPS6393202A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU178658U1 (en) * | 2017-11-14 | 2018-04-16 | Акционерное общество "Научно-исследовательский институт Приборостроения имени В.В. Тихомирова" | WAVE WAVE LOAD |
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