JPS6342204A - Truss structure antenna - Google Patents
Truss structure antennaInfo
- Publication number
- JPS6342204A JPS6342204A JP18515086A JP18515086A JPS6342204A JP S6342204 A JPS6342204 A JP S6342204A JP 18515086 A JP18515086 A JP 18515086A JP 18515086 A JP18515086 A JP 18515086A JP S6342204 A JPS6342204 A JP S6342204A
- Authority
- JP
- Japan
- Prior art keywords
- specular surface
- mirror surface
- mirror
- antenna
- fixed
- 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
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 230000002093 peripheral effect Effects 0.000 abstract description 11
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 235000009581 Balanites aegyptiaca Nutrition 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 241001669573 Galeorhinus galeus Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、高い鏡面精度が必要とされる大口径のアンテ
ナ、例えば、衛星搭載用の大口径のアンテナに関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a large-diameter antenna that requires high mirror accuracy, for example, a large-diameter antenna for use on a satellite.
（従来の技術）
従来のアンテナの鏡面は、ＣＦＲＰの表皮を両端に有し
、その間にアルミニウムハニカム製のコアを存するサン
ドイッチ構造のものであり、高蹟度の要求される大口径
アンテナ用の大形鏡面を製造するには製造誤差が大きく
充分な性能のアンテナ鏡面を得ることができなかった。(Prior Art) The mirror surface of a conventional antenna has a sandwich structure with a CFRP skin on both ends and an aluminum honeycomb core between them. In manufacturing a shaped mirror surface, manufacturing errors were large and it was not possible to obtain an antenna mirror surface with sufficient performance.
これを解決するためトラス構造アンテナ鏡面は考えられ
、薄い殻状の鏡面をトラス構造の骨組みに接続・ＩＮ定
するとともに、接続部にトラス構造と殻状の鏡面との間
隔を調整できる鏡面調整機構を用いることにより、トラ
ス構造や鏡面を構成する殻（鏡面殻）の製造誤差にかか
わらず、所望の形状の鏡面が１１？られるように成され
ていた。In order to solve this problem, a truss structure antenna mirror surface was devised, in which a thin shell-like mirror surface is connected to the framework of the truss structure and the IN position is set, and a mirror surface adjustment mechanism is provided at the connection part that can adjust the distance between the truss structure and the shell-like mirror surface. By using , the desired shape of the mirror surface can be obtained regardless of the manufacturing error of the truss structure or the shell (mirror surface shell) that makes up the mirror surface. It was made so that it could be done.
第１図（ａ）は従来のトラス構造アンテナの鏡面の固定
点の配置を示す図である。第１図において、１の黒丸は
鏡面調整機構を介して鏡面殻がトラス構造に固定される
固定点、２は鏡面殻、３はトラス構造である。FIG. 1(a) is a diagram showing the arrangement of fixed points on a mirror surface of a conventional truss structure antenna. In FIG. 1, the black circle 1 is a fixing point where the mirror shell is fixed to the truss structure via the mirror adjustment mechanism, 2 is the mirror shell, and 3 is the truss structure.
この際、鏡面調整機構を設ける間隔は、トラス構造によ
り決まる鏡面調整機構設置の容易な−・定の粗な間隔で
あった。At this time, the intervals at which the mirror surface adjustment mechanisms were provided were determined by the truss structure and were fixed rough intervals that made it easy to install the mirror surface adjustment mechanisms.
（発明が解決しようとする問題点）
このため、宇宙空間の苛酷な温度条件の下でトラス構造
と鏡面殻の熱膨張係数の差に起因する周期的な熱変形を
生じ、アンテナの重要な電気性能の１つであるサイドロ
ーブ特性が、通信に影響のｉ、ｙ＞ ６ ”Ｈｖ ｌ’
ｌ 内に、、ｍ Ｊ、５い″（、：ＣＩＦ、’、； ｈ
）ｊｉ１４１）’＋ ｋｈ４ ”Ｉ’；ニ１ｈ ＼−（
入、き・く劣化ＸＪイＣどいラド具１）をノｉＩｇン（
いｌ：・。＊ ｒ＝ 。(Problem to be solved by the invention) For this reason, periodic thermal deformation occurs due to the difference in thermal expansion coefficient between the truss structure and the mirror shell under the harsh temperature conditions of outer space, and the antenna's important electrical The sidelobe characteristic, which is one of the performance characteristics, affects communication when i, y> 6 "Hv l'
In l,,m J,5''(,:CIF,',;h
)ji141)'+kh4 ``I';ni1h \-(
Input, input, deteriorated
I:・. *r=.
第１図（ｂ） ｋ二本）５−ようにり−（１”ロー丁Ｉ
特１″ｔｈ脣ｔつ化Ｉ７ない、１ｚ・）１に゛細かい間
隔で１−・じｉ二）ｉ“る１、冒）、多数σ）♂０，１
１旧調整機構が必要と１１つたり、時には、！％Ｉ整機
構の配置１’Ｔ： ｎ ’５よ゛）に１−ラス構造の間
隔を細かく１−４． ｌ：＝め、アンテナの製ｊ森・調
整１ｃ ％大の時間と人ｔを要１ノコストが高くなる、
衛星拮絃用アノデーノーどじで重要な性イＩＬの１つで
ある軽に性が損な、わわるというような欠点を／１し７
ていた。本究明は、トラス構造アンテナにおζ・」る所
望の領域に↓５１ろ）ノイドローブ特性の劣化および鏡
面調整機構数の増加による鏡面調整の［間の増加、ｉｆ
’（ｉ武の増加をなくすための１段を提供″４−るムの
°である。Figure 1 (b) k2 pieces) 5-Yoniri- (1” Ro-cho I
Special 1"th extension I7 not, 1z・) 1"at fine intervals 1-・jii 2) i"ru1, pronunciation), many σ)♂0,1
1 old adjustment mechanism is needed and 11 times, sometimes! %I alignment mechanism arrangement 1'T: n' 5) Finely space the 1-las structure 1-4. l:=It takes 1% more time and people to make and adjust the antenna, which increases the cost by 1%.
It is one of the important sex ILs for satellite ensembles, and the drawbacks are that the sex may be slightly damaged or damaged.
was. This study shows that the desired region of the truss structure antenna is ζ.
(Providing one step to eliminate the increase in i-mu)
（問題点を解決１″るための１段）
本究明では、こ、ｔ″１．らの欠点をなく４−ため、鏡
面調整機構を鏡面の中央部゛では粗な間隔で、土ノ：・
、鏡面の周辺部では密な間隔で配置するように鏡面調？
ｌ：機構の配置を定めることにより、リーｆトロープ特
竹を改善できるどともに通信に影響の無いようｊ、−＝
１ノ・イトＶ′、ｌ−ブの現オＴ、し位置を・定める４
−−２・が−（・′キルよ’） ｋＴしｌ：ｆｉｌｌ、
〉ノ゛ｖ、ラロ１、密な間隔どＩｉｌな間１マ？コと６
゜文例λば１：２程度と１ノ、かつ、−り了）” ＵＪ
−Ｈ，ｖ□を・仰々ｊ−る方向に応じ−【′面記間隔
ｔ；Ｌ調節さｔ′）。る／ｊのと１１−る。(1 step to solve the problem 1") In this investigation, t"1. In order to eliminate these drawbacks, the mirror surface adjustment mechanism is installed at coarse intervals in the center of the mirror surface.
, Is it mirror-like so that it is placed at close intervals around the mirror surface?
l: By determining the arrangement of the mechanism, it is possible to improve the leaf-trope special bamboo, but also so that it does not affect communication, j, -=
1. Determine the position of the current position of V', l-b.4
-2・ga-(・'Kill') kTshil:fill,
〉No゛v, Lalo 1, close interval etc. 1 ma? Ko and 6
゜ Sentence example λ ba 1: about 2 and 1 no, and -ri completed)” UJ
- Depending on the direction in which H and v□ are raised, - ['Scale spacing t; L adjustment t'). ru/jnoto 11-ru.
（作用）
Ｘへ面の中１ｚ１部と周辺部′τ゛鏡面調整機枯に：３
１、と）鏡面殻のトラス構造への固定点’□ Ｗ ｇδ
〜う−る間隔を′；■゛化、ｇ （！’、ｊハ酷な温度
条件干゛での熱変形の周ｕ１１↑１４）、！少なく４″
るとと・ｂに変形時ＬＬ）低ｇするにとに゛より、鏡面
全体を一様に粗な間隔で鏡面調も；−機構により固定Ｉ
ノた場合に比１ノ丁、す′ｒド（１−プレベルも低くり
゛イドロー・ブの現４１．る位置ター・通イ５曹、−影
響の無い位置にて８、また、鏡面全面を一様に密な間隔
で鏡面よ１整機構に二より固定した場拾６て比しし、鏡
面調整機構数の削減かｉｔ能と・なり鏡面調整の［２間
の増加、ｇｆＩ量の増加を抑えることができる１、（実
施例）
第１図に″は、従来の固定点配置゛である（、′ｉ）
（＋））の他に、（Ｃ）として中央部を一等間隔で固定
して低サイドロー ブ特性か得ｔうわ、るどと７．）に
・す′ｒドｖドーグｌノベルのピークが通イムに影響の
無い位置１・−なる間隔ｄ２の２倍程度に相な間隔ｃ玉
。で、周辺部を密な間隔ｄ２で固定１−る本究明のアン
テナ鏡面固定点の配置例をポしてよ５つ、（ｄ）とし゛
−Ｃ本発明とは逆（、″′中央部を密な間隔ｄ２で、周
辺部を粗な間隔ｄ、で固定し固定点数の節約を図っＩＪ
：鏡面固定点の配置例が、バ１）であるまた、第２図に
は鏡面全面にわたり粗に二固定した従来の鏡面固定点配
置（第１ 図（ａ）の配置）によるアンプ３−の・す゛
ｆイトローブ特性曲線Ａどし゛（−１鏡面全面１．′わ
ｊ：：り密に固定１７た場名の固定点配置（第１図（ｂ
）の配置）に−よるアンテナのサイドローブ特性を曲線
ｎどｌ。(Function) In the middle 1z1 part of the surface to X and the peripheral part ′τ゛Mirror surface adjustment machine dry: 3
1) Fixed point of mirror shell to truss structure '□ W gδ
The interval between ~ is ′;■゛, g (!', j is the circumference of thermal deformation under severe temperature conditions u11↑14),! less than 4″
When deformed to (LL), the entire mirror surface is uniformly spaced at coarse intervals to create a mirror-like finish.
In this case, compared to the 1st position, the stage (1- level is also low). Comparing the case where the mirror surface adjustment mechanism is fixed to the mirror surface adjustment mechanism at uniformly close intervals, the number of mirror surface adjustment mechanisms can be reduced, and the amount of gfI can be increased. 1. (Example) In Fig. 1, "" is the conventional fixed point arrangement"(,'i)
In addition to (+)), as (C), you can fix the center part at equal intervals to obtain low side lobe characteristics. ), the peak of the novel is at a position 1, which has no effect on time, and the interval c is approximately twice the interval d2. Now, point out an example of the arrangement of the mirror surface fixing points of the antenna according to the present study, in which the peripheral parts are fixed at close intervals d2. The IJ is fixed at close intervals d2 and the periphery is fixed at coarse intervals d to save the number of fixing points.
: An example of the arrangement of mirror surface fixing points is shown in bar 1).Furthermore, FIG.・Swift lobe characteristic curve A (-1 specular entire surface 1.'W:: densely fixed 17 fixed point arrangement (Fig. 1(b)
) The side lobe characteristics of the antenna due to the arrangement of the curve ndl.
で、本発明の固定点配置（第１図（（：）の配置）によ
るアンテナ鏡面を用いた場合のアンテナの＋工・イトロ
ーブ特性を曲線Ｃとして、中央部を密１Ｚｒ周辺部を粗
に固定１４．た固定点配置（第１図（ｄ）の配置）によ
るアンテナのザイドローブ特＋Ｉｉ′を曲線りとして、
それぞれ示しである
１１１本を対象と１ノた衛〒通信においては、例えば周
波数のれり迦、し使用を行つＩ：：めり（１” Ｕｌ
ブ（、゛よる［渉を低いレベルに抑えろ私費のある東
５；ミ・大版間、札幌・東京間等は、（１，８−１，２
度の間−Ｃあり１．５度以内の角度［ザイドロ・−ブ１
、／ベルの高い個所か無いという特性が得らＪ”’１．
、ｉｔば良い９、・“＝１１を満足″１″るように定
め１．二本１発明の一実施例のアンテナ鏡面の固定点の
間隔は使用周波数の波長を・えどして中央部で５０λ４
、周辺部′で゛２５λ程度とｊｙ ｌ’ｙ−とき、第２
図中＋、：二Ｃ（７）線−ｅ ”ｃ （７）特性計算！
ｌ′ｉ２ψを示すように、す゛イドローブ；、／ベルノ
ー）低くす（トＶＪ−ブの現」７る位置４・通信１、′
ｌ影響の無い位置に配置でき”−Ｃいる。従来の２へ面
全体を粗１ｚ″ｌ固定ｌ−５また場合に１）いてのソー
イド１トープ特性の計算結果は第２図のＡ（（゛示すと
おり”τ゛あるか、ザｆド０−ブレヘルのビ・−りは約
０．９度のところに二あり、曲線Ｃのピークレベルより
ｂ大きい値となっ−Ｃいる。。Then, when using the antenna mirror surface according to the fixing point arrangement of the present invention (Fig. 1 ((:) arrangement), the antenna's positive-to-lobe characteristic is defined as curve C, and the central part is densely fixed with 1Zr and the peripheral part is coarsely fixed. 14. Let the zydlobe characteristic +Ii' of the antenna with the fixed point arrangement (the arrangement shown in Fig. 1(d)) be a curve,
For example, in 1-node satellite communications targeting 111 lines, for example, I::Meri (1" Ul
(, ゛ [Keep crossing to a low level. East 5 with private funds; Mi-Ohanma, Sapporo-Tokyo, etc.) (1, 8-1, 2
Angle within 1.5 degrees with -C between degrees [Zydro-B1
,/J”'1.
, it should be 9, ``=11'' is satisfied. 50λ4
, when jy l'y- is about 25λ in the peripheral part',
+ in the figure: 2C (7) line -e ”c (7) Characteristic calculation!
As shown in l'i2ψ, position 4, communications 1,'
It can be placed in a position where there is no influence.The calculation result of the tope characteristic of the soid 1 when the entire surface is roughly fixed at 1z''l in the conventional case 1) is shown in Fig. 2A(( As shown, there is τ, and the bias of the f-do-0-Breher is at about 0.9 degrees, which is a value b larger than the peak level of the curve C.
第２図のＢは鏡面全体を密ｊう丁固定１． 六：場合１
に′つぃＣ゛のサイドローブ特性であり、電気特性どし
ては所望の特性が得られでいる。また、第２図のＤは中
央部を密に固定し周辺部を粗ｊζ固定し〕、′−，ｂの
のサイドローブ特性の計算結果である。サイドローブレ
ベルのピークは約０．９度のところにあり、ピークレベ
ルも本発明によるＣのものより大きい値となっている。B in Fig. 2 shows the fixation 1. which covers the entire mirror surface. 6: Case 1
This is the sidelobe characteristic of Ni'C', and the desired electrical characteristics are not obtained. Further, D in FIG. 2 is the calculation result of the side lobe characteristic of '-, b, with the central part being tightly fixed and the peripheral part being coarsely fixed at jζ]. The peak of the sidelobe level is at about 0.9 degrees, and the peak level is also larger than that of C according to the present invention.
これより、アンテナ鏡面の常識的な考えに反して鏡面の
中央部の影響が少なく、周辺部の影響が大きいこと、本
発明の固定点配置に従い鏡面調整機構を鏡面の中央部で
は粗に、鏡面の周辺部では密に配置するように鏡面調整
機構の間隔を定めることによりサイドローブレベルも低
くサイドローブの出現する位置を通信に影響の無い位置
にできることが分かる。第３図には第２図のＡ、Ｂ。From this, it is clear that contrary to the common sense idea of antenna mirror surfaces, the influence of the central part of the mirror surface is small and the influence of the peripheral parts is large, and that according to the fixed point arrangement of the present invention, the mirror surface adjustment mechanism is adjusted roughly in the central part of the mirror surface, and that the mirror surface is It can be seen that by determining the spacing of the mirror adjustment mechanisms so that they are densely arranged in the peripheral area, the side lobe level is also low, and the position where the side lobe appears can be set to a position where it does not affect communication. Figure 3 shows A and B in Figure 2.
Ｃ，Ｄを計算により求める際に用いた鏡面変形のパター
ンをそれぞれＡ ’、Ｂ“、Ｃ’、Ｄ ’、として示す
。The specular deformation patterns used to calculate C and D are shown as A', B'', C', and D', respectively.
第３図のＡ′は従来の鏡面全面にわたり鏡面精度調整点
間隔が粗で変形も大きい場合、Ｂ′は鏡面全面にわたり
鏡面積度調整点間隔が密で変形も小さい場合、Ｃｏは鏡
面の周辺部の鏡面精度調整点を増加、させ変形量を低減
することによりその部分の変形の周１１Ｊｌか短くなっ
た場合、Ｄ′は鏡面の中央部の鏡面精度調整点を増加さ
せ変形ｆｉｌを低減することによりその部分の変形の周
期が短くなった場合をそれぞれ想定したものであるが、
サイトローブにｊｆ２２ｙの大きい波状の変形について
のみ着目し変形を模擬しており、理想鏡面より第３図に
示す鏡面変形が生じたとしてサイドローブ特性の計算を
行っている。In Fig. 3, A' is a case where the mirror surface accuracy adjustment points are spaced closely over the entire mirror surface and the deformation is large, B' is when the mirror surface accuracy adjustment points are closely spaced over the entire mirror surface and the deformation is small, and Co is the periphery of the mirror surface. If the circumference of the deformation of that part becomes shorter by 11 Jl by increasing the mirror surface precision adjustment point of the mirror surface and reducing the amount of deformation, D' increases the mirror surface precision adjustment point of the central part of the mirror surface and reduces the deformation fil. This assumes that the period of deformation of that part becomes shorter due to
The deformation is simulated by focusing only on the large wave-like deformation of jf22y in the site lobe, and the side lobe characteristics are calculated assuming that the specular deformation shown in FIG. 3 occurs from the ideal mirror surface.
鏡面全体にわたり鏡面調整機構による固定点を密に配置
すれば、第２図のＢとして示すように鏡面の温度変化に
対する鏡面の変形の積と周期か小さくなりサイドローブ
レベルか小さくなるとともにサイドローブのピークが通
信に影響の無い位置にできることは明らかであるが、本
発明の固定点配置を採用する場合に比して、鏡面を固定
するための鏡面調整機構数の増大は避けられず、重量の
増加を生じることは明白である。また、鏡面調整機構を
鏡面全体にわたり所望の位置につけるためには、時には
トラス構造の変更部材の増加にもつながる場合もありそ
の際には、重量の増加もより一層大きなものになる。If the fixing points of the mirror surface adjustment mechanism are arranged densely over the entire mirror surface, the product and period of the mirror surface deformation due to the temperature change of the mirror surface will become smaller, and the sidelobe level will become smaller, as shown by B in Figure 2. It is clear that the peak can be placed at a position that does not affect communication, but compared to the case where the fixed point arrangement of the present invention is adopted, an increase in the number of mirror surface adjustment mechanisms for fixing the mirror surface is unavoidable, and the weight is increased. It is clear that an increase occurs. Further, in order to place the mirror surface adjustment mechanism at a desired position over the entire mirror surface, it may sometimes lead to an increase in the number of members for changing the truss structure, and in this case, the weight increases even more.
（発明の効果）
以上説明したように、本発明のトラス構造アンテナを用
いれば、鏡面調整機構数を大幅に増加させることなく、
少ない重量でサイドローブレベルも低くサイドローブの
現れる位置を通信に影響の無い位置に配置することが可
能となり、また鏡面調整の手間の増加も少なく、軽量で
電気性能も優れた衛星搭載用のアンテナを実現できる。(Effects of the Invention) As explained above, by using the truss structure antenna of the present invention, the number of mirror surface adjustment mechanisms can be reduced without significantly increasing the number of mirror adjustment mechanisms.
A satellite-mounted antenna that is lightweight, has low sidelobe levels, can be placed in a position where sidelobes appear without affecting communication, requires less effort for mirror adjustment, is lightweight, and has excellent electrical performance. can be realized.
第１図はアンテナの鏡面の固定点の配置を示す１′：Ａ
、第２図は種々の鏡面固定点配置に対するサイドローブ
特性の計算値を示す図、第３図は種々の鏡面固定点配置
の対するサイドローブ特性に対応１−る鏡面変形パター
ンを示す図である。
１は鏡面調整機構を介して鏡面殻とトラス構造を接続・
固定する点
２は鏡面殻
３はトラス構造
Ａは従来の鏡面全面にわたり粗に固定した場合のアンテ
ナサイドローブ特性
Ｂは従来の鏡面全面にわたり密に固定した場合のアンテ
ナサイドローブ特性
Ｃは本発明の１実施例のアンテナサイドローブ特性
りは鏡面中央部を密に、鏡面周辺部を粗に固定した場合
のアンテナサイドローブ特性
Ａ′は従来の鏡面全面にわたり粗に固定した場合のアン
テナ鏡面の変形例を示′１−曲線
Ｂ′は従来の鏡面全面にわたり密に固定した場合のアン
テナ鏡面の変形例を示す曲線
Ｃｏは本発明の１実施例のアンテナ鏡面の変形例を示す
曲線
Ｄ′は鏡面中央部を密に、鏡面周辺部を粗に固定した場
合のアンテナ鏡面の変形例を示す曲線
（ｃ） ｃｃｉ＞トラ又犠Ａ匡７
ンテナｌす
色 惠 （塵）
゛ケイド工１−ブセ１幅−の 計食堵−朱２ゾFigure 1 shows the arrangement of fixed points on the mirror surface of the antenna 1':A
, FIG. 2 is a diagram showing calculated values of sidelobe characteristics for various mirror surface fixed point arrangements, and FIG. 3 is a diagram showing mirror surface deformation patterns corresponding to sidelobe characteristics for various mirror surface fixed point arrangements. . 1 connects the mirror shell and truss structure via the mirror adjustment mechanism.
The fixing point 2 is the mirror shell 3, the truss structure A is the antenna side lobe characteristic B when it is loosely fixed over the entire surface of the conventional mirror, and the antenna side lobe characteristic C when it is tightly fixed over the entire surface of the conventional mirror is the antenna side lobe characteristic C of the present invention. The antenna side lobe characteristics of the first embodiment are shown in the case where the central part of the mirror surface is tightly fixed and the peripheral parts of the mirror surface are loosely fixed.Antenna side lobe characteristics A' is a modified example of the antenna mirror surface when the conventional mirror surface is fixed roughly over the entire surface. '1-Curve B' shows a modified example of the antenna mirror surface when it is tightly fixed over the entire surface of the conventional mirror surface.Curve Co shows a modified example of the antenna mirror surface of an embodiment of the present invention.Curve D' shows the modified example of the antenna mirror surface in the case where the mirror surface is tightly fixed over the entire surface of the conventional mirror surface.Curve D' is the center of the mirror surface. Curve (c) showing an example of modification of the antenna mirror surface when the mirror surface is fixed densely and the peripheral portion of the mirror surface is fixed loosely.
The color of the antenna is dust.
Claims (1)
ラス構造アンテナにおいて、 鏡面調節機構の配置を鏡面中央部では粗に配置し、鏡面
周辺部においては密に配置したことを特徴とするトラス
構造アンテナ。[Claims] In a truss structure antenna in which a mirror shell is fixed to a truss structure via a mirror adjustment mechanism, the mirror adjustment mechanism is arranged sparsely at the center of the mirror and densely arranged at the periphery of the mirror. A truss structure antenna featuring
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18515086A JPH0716128B2 (en) | 1986-08-08 | 1986-08-08 | Truss structure antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18515086A JPH0716128B2 (en) | 1986-08-08 | 1986-08-08 | Truss structure antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6342204A true JPS6342204A (en) | 1988-02-23 |
| JPH0716128B2 JPH0716128B2 (en) | 1995-02-22 |
Family
ID=16165734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18515086A Expired - Lifetime JPH0716128B2 (en) | 1986-08-08 | 1986-08-08 | Truss structure antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716128B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5184145A (en) * | 1989-07-06 | 1993-02-02 | Minister Of The Post, Telecommunications And Space (Centre National D'etudes Des Telecommunications) | Dismountable and air-transportable antenna for two-way telecommunications with a satellite |
-
1986
- 1986-08-08 JP JP18515086A patent/JPH0716128B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5184145A (en) * | 1989-07-06 | 1993-02-02 | Minister Of The Post, Telecommunications And Space (Centre National D'etudes Des Telecommunications) | Dismountable and air-transportable antenna for two-way telecommunications with a satellite |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0716128B2 (en) | 1995-02-22 |
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| EXPY | Cancellation because of completion of term |