【発明の詳細な説明】この発明は、サンドイッチ構造体で作られるマイクロス
トリップアレーアンテナに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microstrip array antenna made of a sandwich structure.
従来この種のアンテナにおける人工衛星搭載用展開型マ
イクロストリップアレーアンテナとして第１図〜第４図
に示すものがあった。2. Description of the Related Art Conventionally, there have been antennas of this type shown in FIGS. 1 to 4 as deployable microstrip array antennas for mounting on artificial satellites.
第１図は人工衛星搭載用展開型マイクロストリップアレ
ーアンテナの概略図、第２図はアンテナパネルの断面図
、第６図は第２図の構成材料の実際例を示した図、第４
図は軌道上での展開後のアンテナの熱変形後の状態を示
した図である。Figure 1 is a schematic diagram of a deployable microstrip array antenna for use on a satellite, Figure 2 is a cross-sectional view of the antenna panel, Figure 6 is a diagram showing an actual example of the constituent materials shown in Figure 2, and Figure 4 is a diagram showing an actual example of the constituent materials shown in Figure 2.
The figure shows the state of the antenna after it has been thermally deformed after being deployed in orbit.
第１図〜第４図において、１けアンテナパネル、２は展
開ヒンジ、３は衛星、４は放射、素子、５は基板、６は
誘電体コア、７は地導体、８はコア、９は表皮材であり
、上記放射素子４、基板５、誘電体コア６および地導体
７によシ第１のサンドイッチパネルを構成し、また地導
体７、コア８および表皮材９によシ第２のサンドイッチ
パネルを構成している。In Figures 1 to 4, 1 antenna panel, 2 a deployment hinge, 3 a satellite, 4 a radiation element, 5 a substrate, 6 a dielectric core, 7 a ground conductor, 8 a core, and 9 a The radiating element 4, the substrate 5, the dielectric core 6, and the ground conductor 7 constitute a first sandwich panel, and the ground conductor 7, the core 8, and the skin material 9 constitute a second sandwich panel. It forms a sandwich panel.
次に動作について説明する。Next, the operation will be explained.
第１図は、衛星３に取付けられかつ展開ヒンジ２によっ
て互いに連結された複数のアンテナバネルＩの展開後の
状態を示している。FIG. 1 shows a plurality of antenna panels I attached to a satellite 3 and connected to each other by deployment hinges 2 in a deployed state.
第２図は、アンテナパネル１の断面図であシ、マイクロ
ストリップアレーアンテナの実際例を示している。FIG. 2 is a sectional view of the antenna panel 1, showing an actual example of a microstrip array antenna.
図中、アンテナパネルＩは、誘電体から成る基板５の一
方の面に金、銀、銅などと同様に電気伝導度が高く、軽
量で剛性の高い地導体７を有し、その間を軽量で低誘電
率を有する材料から成る誘電体コア６で埋めて構成した
第１のサンドイッチパネルＡと、アンテナパネルｌ全体
の剛性をあげるため、軽量なコア８と、軽量で剛性の高
い表皮材９とを組み合わせた第２のサンドイッチパネル
Ｂとにより、二重サンドインチ構造を構成している。In the figure, the antenna panel I has a ground conductor 7 on one side of a substrate 5 made of a dielectric material, which has high electrical conductivity like gold, silver, copper, etc., and is lightweight and highly rigid. The first sandwich panel A is composed of a dielectric core 6 made of a material having a low dielectric constant, a lightweight core 8 and a lightweight and highly rigid skin material 9 to increase the rigidity of the entire antenna panel. and the second sandwich panel B in combination constitutes a double sandwich structure.
第３図に従来のマイクロストリップアレーアンテナの構
成材料の実際例を示す。FIG. 3 shows an actual example of the constituent materials of a conventional microstrip array antenna.
第６図において、第２図の放射素子４に銅箔、基板５に
ガラス繊維強化プラスチツク材、誘電体コア６にナイロ
ン繊維強化ハニカムコア、地導体７にカーボン繊維強化
プラスチツク材、コア８にアルミハニカムコア、表皮材
９にカーボン繊維強化プラスチツク材をそれぞれ用いて
いる。In FIG. 6, the radiating element 4 in FIG. 2 is made of copper foil, the substrate 5 is made of glass fiber reinforced plastic material, the dielectric core 6 is made of nylon fiber reinforced honeycomb core, the ground conductor 7 is made of carbon fiber reinforced plastic material, and the core 8 is made of aluminum. Carbon fiber reinforced plastic material is used for the honeycomb core and the skin material 9, respectively.
ところで、複合材は接合材断面の中立面から両側の平均
熱膨張係数が同じであれば、温度差が生じても面外の変
形は小さいが、面側の平均熱膨張係数の違いが太きけれ
ば大きいほどバイメタルと同様に面外の変形が大きくな
る。By the way, in a composite material, if the average coefficient of thermal expansion on both sides from the neutral plane of the cross section of the bonded material is the same, the out-of-plane deformation will be small even if a temperature difference occurs, but the difference in the average coefficient of thermal expansion on the plane side will be large. The larger the difference, the greater the out-of-plane deformation, similar to bimetals.
ガラス繊維の熱膨張係数は、カーボン繊維の熱膨張係数
より大きいので従来のアンテナパネルは、温度差によシ
バイメタルと同様に面外の変形が大きく生じていた。Since the coefficient of thermal expansion of glass fiber is larger than that of carbon fiber, conventional antenna panels suffer from large out-of-plane deformations due to temperature differences, similar to the case with semi-metal.
アンテナパネル全体は、電気性能の要求条件から平坦に
す不必要がある。The entire antenna panel does not need to be flat due to electrical performance requirements.
しかし、従来のマイクロストリップアレーアンテナは、
以上のように構成されているので、各層の熱膨張係数が
違うため、人工衛星打上げ前の地上と・人工衛星打上げ
後０宇宙空間とに温度差力” ・１あシ、第４図に示す
ようにアンテナパネルの熱変形が生じた。However, the conventional microstrip array antenna
With the above structure, each layer has a different coefficient of thermal expansion, so there is a temperature difference between the ground before the satellite is launched and the outer space after the satellite is launched. This caused thermal deformation of the antenna panel.
ところが、アンテナ電気性能上の要求から、熱変形を小
さく平坦にしなければならず、各層の熱膨張係数を同じ
くするだめの構成材料の検討及び変更するととが必要で
、また、補強ビーム材等による熱変形を小さくするため
剛性強化等の構造上の検討及び変更をする必要があり、
重量増加を寸ねくなどの欠点があった。However, due to the requirements for antenna electrical performance, it is necessary to minimize thermal deformation and make it flat, and it is necessary to consider and change the constituent materials to make each layer have the same coefficient of thermal expansion. In order to reduce thermal deformation, it is necessary to consider and change the structure, such as strengthening the rigidity.
There were drawbacks such as a slight increase in weight.
この発明は、このような欠点を解消するためになされた
もので、精度が高く、かつ軽量な人工衛星搭載用展開型
マイクロストリップアレーアンテナを提供するものであ
る。The present invention has been made to eliminate these drawbacks, and provides a highly accurate and lightweight deployable microstrip array antenna for use on an artificial satellite.
以下、この発明の一実施例について説明する。An embodiment of the present invention will be described below.
第５図において、基本的な構成及び構造は、第６図と同
様であるが、この発明の実施例では第１のサンドインチ
パネルを構成しているガラス繊維強化プラスチツク材の
基板５と、ナイロン繊維強化ハニカムコアで形成された
誘電体コア６の断面を切断し、第６図に示すように放射
素子４を設けた基板５と誘電体コア６の第１のサンドイ
ンチパネルＡを８分割にしている。In FIG. 5, the basic configuration and structure are the same as those in FIG. The cross section of the dielectric core 6 formed of a fiber-reinforced honeycomb core was cut, and the first sandwich panel A of the dielectric core 6 and the substrate 5 provided with the radiating element 4 was divided into eight parts as shown in FIG. ing.
以上のように、この発明によれば、第１のサンドインチ
パネルＡを構成するガラス繊維強化プラスチツク材の基
板５と、ナイロン繊維強化・・ニカムコアで形成した誘
電体コア６の断面を切断し、温度差によシバイメタルと
同様に面外変形しようとする蒔、上記第１のサンドイン
チパネルＡの切断部で面外変形をおこさせる力を開放し
、面外変形量を、Ｊ・さくした二重サンドインチ構造で
あるから、宇宙空間での熱変形を減少させパネル全体を
平坦にできる利点がある。As described above, according to the present invention, the cross section of the substrate 5 made of glass fiber reinforced plastic material constituting the first sandwich panel A and the dielectric core 6 formed of nylon fiber reinforced Nicum core is cut, The force that causes out-of-plane deformation at the cut portion of the first sandwich panel A was released, and the amount of out-of-plane deformation was reduced by J. The double sandwich structure has the advantage of reducing thermal deformation in space and making the entire panel flat.
第１図〜第４図は、従来における人工衛星搭載用展開型
ストリップアレーアンテナを説明するための図、第５図
及び第６図は、この発明のマイクロストリップアレーア
ンテナの特徴を説明するだめの図である。図中、１はアンテナパネル、２は展開ヒンジ、３は衛星
、４は放射素子、５は基板、６は誘電体コア、７は地導
体、８はコア、９は表皮材をそれぞれ示す。 Ｊ1 to 4 are diagrams for explaining a conventional deployable strip array antenna for use onboard an artificial satellite, and FIGS. 5 and 6 are diagrams for explaining the features of the microstrip array antenna of the present invention. It is a diagram. In the figure, 1 is an antenna panel, 2 is a deployment hinge, 3 is a satellite, 4 is a radiating element, 5 is a substrate, 6 is a dielectric core, 7 is a ground conductor, 8 is a core, and 9 is a skin material. J
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11707383AJPS6010806A (en) | 1983-06-30 | 1983-06-30 | Microstrip array antenna |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11707383AJPS6010806A (en) | 1983-06-30 | 1983-06-30 | Microstrip array antenna |
| Publication Number | Publication Date |
|---|---|
| JPS6010806Atrue JPS6010806A (en) | 1985-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11707383AGrantedJPS6010806A (en) | 1983-06-30 | 1983-06-30 | Microstrip array antenna |
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