JPH0831740B2 - Antenna device - Google Patents
Antenna deviceInfo
- Publication number
- JPH0831740B2 JPH0831740B2 JP62044880A JP4488087A JPH0831740B2 JP H0831740 B2 JPH0831740 B2 JP H0831740B2 JP 62044880 A JP62044880 A JP 62044880A JP 4488087 A JP4488087 A JP 4488087A JP H0831740 B2 JPH0831740 B2 JP H0831740B2
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- sub
- reflecting mirror
- small
- antenna device
- 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.)
- Expired - Fee Related
Links
Landscapes
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は衛星の捕捉性能を上げるために大アンテナ
に照準用の小アンテナを取付けたアンテナ装置に関する
ものである。Description: TECHNICAL FIELD The present invention relates to an antenna device in which a small antenna for aiming is attached to a large antenna in order to improve the capturing performance of a satellite.
第２図は従来のアンテナ装置を示す半断面図であり、
図において（１）はパラボラ鏡面、（２）はパラボラ鏡
面（１）と対向してその回転対称軸に取付けられた副反
射鏡、（３）は一次放射器、（４）は副反射鏡（２）を
支持する支持柱、（５）は副反射鏡（２）の位置を調整
する調整金具で、副反射鏡（２）は８本又は４本の調整
金具で位置が調整される。（６）は衛星を捕捉する小ア
ンテナ、（７）は小アンテナ（６）の位置を調整する調
整金具で、小アンテナ（６）は３本又は４本の調整金具
で位置が調整される。（９），（10）はアンテナ装置の
回転軸を示す。FIG. 2 is a half sectional view showing a conventional antenna device,
In the figure, (1) is a parabolic mirror surface, (2) is a sub-reflecting mirror attached to the parabolic mirror surface (1) and attached to its rotational symmetry axis, (3) is a primary radiator, and (4) is a sub-reflecting mirror ( The supporting column for supporting 2), (5) is an adjusting metal fitting for adjusting the position of the sub-reflecting mirror (2), and the position of the sub-reflecting mirror (2) is adjusted by 8 or 4 adjusting metal fittings. (6) is a small antenna that captures satellites, (7) is an adjustment fitting for adjusting the position of the small antenna (6), and the position of the small antenna (6) is adjusted by three or four adjustment fittings. (9) and (10) show the rotation axis of the antenna device.
第３図及び第４図は第２図のＡ部及びＢ部の拡大図で
ある、調整金具（５）（７）はフランジ（51）（71）に
大座金（52）（72）を介して螺合されるボルト（53）
（73）とナツト（54）（74）で構成されている。3 and 4 are enlarged views of the portions A and B of FIG. 2. The adjustment metal fittings (5) (7) have flanges (51) (71) via large washers (52) (72). Bolts screwed together (53)
It is composed of (73) and nuts (54) (74).
次に動作について説明する。パラボラ鏡面（１），副
反射鏡（２），一次放射器（３），支持柱（４）そして
調整金具（５）から大アンテナが構成され、この大アン
テナの支持柱（４）上に小アンテナ（６）が取付けられ
ている。この小アンテナ（６）は大アンテナのビーム巾
より広いビーム巾特性に設計されているので、まず小ア
ンテナ（６）が衛星を捕捉し、その時のアンテナ装置の
姿勢を確保して次に大アンテナが衛星を捕捉する。衛星
を捕捉するためにアンテナ装置は回転軸（９）（10）ま
わりに回転している。Next, the operation will be described. A large antenna is composed of the parabolic mirror surface (1), the sub-reflecting mirror (2), the primary radiator (3), the support pillar (4) and the adjusting metal fitting (5), and the small antenna is formed on the support pillar (4) of this large antenna. An antenna (6) is attached. Since this small antenna (6) is designed to have a wider beam width characteristic than the beam width of the large antenna, the small antenna (6) first captures the satellite, secures the attitude of the antenna device at that time, and then the large antenna. Captures the satellite. The antenna device is rotating around the rotation axes (9) and (10) to capture the satellite.
ここで、アンテナ装置の姿勢の変化により大アンテ
ナ，小アンテナは各々自重でその形状が変形する。この
ため、パラボラ鏡面（１），副反射鏡（２），一次放射
器（３），そして小アンテナ（６）のビーム伝送の位置
関係が変化することになり、両アンテナのビーム軸が回
転軸（９）まわりの回転角度ごとに変化して、大アンテ
ナの照準用としての小アンテナの役目が果せなくなる。Here, the shape of each of the large antenna and the small antenna is deformed by its own weight due to the change in the attitude of the antenna device. For this reason, the positional relationship of beam transmission of the parabolic mirror surface (1), the sub-reflecting mirror (2), the primary radiator (3), and the small antenna (6) changes, and the beam axes of both antennas are rotating axes. (9) It changes with each rotation angle around, and the role of the small antenna for aiming the large antenna cannot be fulfilled.
従つて、両アンテナのビーム軸変位が回転軸（９）ま
わりの所定角度で最小となるように矛め副反射鏡（２）
及び小アンテナ（６）の設定位置をそれぞれ調整してお
く。Therefore, the beam axis displacement of both antennas is minimized at a predetermined angle around the rotation axis (9), and the sub-reflecting mirror (2) is used.
And the setting positions of the small antenna (6) are adjusted respectively.
たとえば、アンテナ装置の抑角が０゜から90゜までと
すれば、回転軸（９）角度が０゜（水平方向）,30゜,60
゜,90゜（天方向第３図の状態）のとき、両アンテナの
ビーム軸方向を計算し、実際の回転軸（９）角度との各
偏差が何れも小さくなるように副反射鏡（２）及び小ア
ンテナ（６）をそれぞれ調整金具（５）（７）で位置調
整する。For example, if the angle of the antenna device is 0 ° to 90 °, the rotation axis (9) angle is 0 ° (horizontal direction), 30 °, 60 °.
At ゜ and 90 ゜ (state as shown in Fig. 3), the beam axis directions of both antennas are calculated and the sub-reflecting mirror (2) is set so that each deviation from the actual rotation axis (9) angle becomes small. ) And the small antenna (6) are respectively adjusted in position with the adjustment fittings (5) and (7).
このとき、調整金具（５）（７）は第３図，第４図の
如くフランジ（51）（71）に大座金（52）（72）を介す
るボルト（53）（73）とナツト（54）（74）で構成され
ているので、副反射鏡（２）と小アンテナ（６）は縦横
方向に移動できると共に、その傾きが変えられる。At this time, the adjustment metal fittings (5) (7) have bolts (53) (73) and nuts (54) through which large washers (52) (72) are attached to the flanges (51) (71) as shown in FIGS. ) (74), the sub-reflecting mirror (2) and the small antenna (6) can be moved in the vertical and horizontal directions, and their tilts can be changed.
従来のアンテナ装置は、設立した時などに大アンテナ
と小アンテナのビーム軸調整のために、作業員がアンテ
ナ装置に登り副反射鏡（２）と小アンテナ（６）の位置
決めを、独立して行なう必要があつたので、調整に多大
の時間がかかる等の問題点があつた。In the conventional antenna device, a worker climbs up to the antenna device to adjust the beam axes of the large antenna and the small antenna at the time of establishment and independently positions the sub-reflecting mirror (2) and the small antenna (6). Since it has to be carried out, there is a problem in that it takes a lot of time for adjustment.
この発明は、上記のような問題点を解決するためにな
されたもので、大アンテナと小アンテナのビーム軸調整
が容易にできるアンテナ装置を得ることを目的とする。The present invention has been made to solve the above problems, and an object thereof is to obtain an antenna device that can easily adjust the beam axes of a large antenna and a small antenna.
この発明に係るアンテナ装置は、副反射鏡と小アンテ
ナを接続して一体的に可動するようにした。In the antenna device according to the present invention, the sub-reflector and the small antenna are connected to each other so that they can move integrally.
この発明においては、副反射鏡と小アンテナを一体化
しているので、従来個別に調整を行なつていたために生
じる作業時間が半減する。In the present invention, since the sub-reflecting mirror and the small antenna are integrated, the work time that occurs because individual adjustment is conventionally performed is halved.
この発明と一実施例を第１図に示す。同図はアンテナ
装置を示す半断面図であり、図において（８）は小アン
テナ（６）を副反射鏡（２）に固定するパイプである。This invention and one embodiment are shown in FIG. This figure is a half cross-sectional view showing the antenna device. In the figure, (8) is a pipe for fixing the small antenna (6) to the sub-reflecting mirror (2).
次に実施例の動作について、この実施例においても、
アンテナ装置が回転軸（９）（10）まわりに回転し、ま
ず小アンテナ（６）で衛星を捕捉し、その時のアンテナ
装置の姿勢を確保して、大アンテナが衛星を捕捉するの
は従来装置と同様である。Next, regarding the operation of the embodiment, also in this embodiment,
The antenna device rotates around the rotation axes (9) and (10), first the satellite is captured by the small antenna (6), the attitude of the antenna device at that time is secured, and the large antenna captures the satellite. Is the same as.
又、アンテナ装置の姿勢の変化により大アンテナ，小
アンテナの各自重によるその形状変化で、両アンテナの
ビーム軸が変化するため、アンテナ装置の設立時等にビ
ーム軸調整を矛め行なつておく必要があるのも従来と同
様である。Also, since the beam axes of both antennas change due to the shape changes of the large antenna and the small antenna due to changes in the attitude of the antenna device, the beam axis adjustment must be performed when the antenna device is established. The necessity is the same as in the conventional case.
従つて、両アンテナのビーム軸変位が回転軸（９）ま
わりの所定角度で最小となるように矛め副反射鏡（２）
の設定位置を調整する。Therefore, the beam axis displacement of both antennas is minimized at a predetermined angle around the rotation axis (9), and the sub-reflecting mirror (2) is used.
Adjust the setting position of.
ここでは、小アンテナ（６）が副反射鏡（２）に一体
化されているため、副反射鏡（２）の位置調整だけで済
む。Here, since the small antenna (6) is integrated with the sub-reflecting mirror (2), it is only necessary to adjust the position of the sub-reflecting mirror (2).
たとえば、アンテナ装置の抑角が０゜から90゜までと
すれば、回転軸（９）角度が０゜,30゜,60゜,90゜のと
き、両アンテナのビーム軸方向を計算し、実際の回転軸
（９）角度との各偏差が何れも小さくなるように副反射
鏡（２）を調整金具（５）で位置調整する。このとき、
副反射鏡（２）の位置調整は、小アンテナ（６）のビー
ム軸を考慮しながら、副反射鏡（２）の傾きと、横方向
の移動を調整することで、両アンテナのビーム軸を略一
致させると共に、実際の回転軸（９）角度との偏差も小
さくできる。For example, if the angle of the antenna device is 0 ° to 90 °, the beam axis directions of both antennas are calculated when the rotation axis (9) angle is 0 °, 30 °, 60 °, 90 °. The position of the sub-reflecting mirror (2) is adjusted by the adjusting metal fitting (5) so that each deviation from the angle of the rotation axis (9) becomes small. At this time,
The position of the sub-reflecting mirror (2) is adjusted by adjusting the tilt and lateral movement of the sub-reflecting mirror (2) while considering the beam axis of the small antenna (6). In addition to making them substantially coincident, the deviation from the actual rotation axis (9) angle can be reduced.
具体的には、アンテナ装置が抑角０゜（水平方向）か
ら180゜回転する場合だと、抑角90゜（天方向）のとき
の大アンテナのビーム軸が、実際の回転軸（９）角度90
゜に略一致するように副反射鏡（２）を位置調整すれば
よい。このとき小アンテナ（６）は副反射鏡（２）に一
体化されているので、小アンテナ（６）のビーム軸も必
然的に回転軸（９）角度90゜に位置調整されたことにな
る。Specifically, when the antenna device rotates from an angle of 0 ° (horizontal direction) to 180 °, the beam axis of the large antenna at an angle of 90 ° (vertical direction) is the actual rotation axis (9). Angle 90
The position of the sub-reflecting mirror (2) may be adjusted so that it substantially coincides with the angle. At this time, since the small antenna (6) is integrated with the sub-reflecting mirror (2), the beam axis of the small antenna (6) is necessarily adjusted to the rotation axis (9) angle of 90 °. .
又、アンテナ装置が抑角０゜（水平方向）から90゜
（天方向）回転する場合だとたとえば、抑角60゜のとき
の両アンテナのビーム軸が、実際の回転軸（９）角度60
゜に略一致するように副反射鏡（２）を位置調整すれば
よい。このときは大アンテナと小アンテナ（６）の両ビ
ーム軸を実際の回転軸（９）角度60゜に略一致させるた
めに、副反射鏡（２）の位置調整を小アンテナ（６）の
ビーム軸も考慮しながら、大アンテナのビーム軸が回転
軸（９）角度60゜に略一致するように傾きと横方向の移
動を行なう。If the antenna device rotates from 0 ° (horizontal direction) to 90 ° (heaven direction), the beam axes of both antennas at an angle of 60 ° are the actual rotation axis (9) angle 60 °.
The position of the sub-reflecting mirror (2) may be adjusted so that it substantially coincides with the angle. At this time, in order to make both beam axes of the large antenna and the small antenna (6) substantially coincide with the actual rotation axis (9) angle of 60 °, the position of the sub-reflecting mirror (2) is adjusted to the beam of the small antenna (6). Taking the axis into consideration, the tilt and the lateral movement are performed so that the beam axis of the large antenna substantially coincides with the rotation axis (9) angle of 60 °.
このように、副反射鏡（２）の位置調整が終われば、
従来の調整金具（７）を利用して小アンテナ（６）を固
定すると小アンテナ（６）の支持強度が増すことにな
る。なお、小アンテナ（６）の支持強度がパイプ（８）
で十分に満足されるものであれば、調整金具（７）を取
り除いても良い。In this way, if the position adjustment of the sub-reflecting mirror (2) is completed,
If the small antenna (6) is fixed by using the conventional adjustment fitting (7), the supporting strength of the small antenna (6) will be increased. The small antenna (6) has a supporting strength of the pipe (8).
If the above is sufficiently satisfied, the adjusting metal fitting (7) may be removed.
上記実施例において、たとえば小アンテナ（６）はそ
の回転対称軸に一次放射器を有するフロントフイード型
アンテナを使用する。又、上記実施例では副反射鏡
（２）が双曲面を有するカセグレン型アンテナについて
説明したが、副反射鏡（２）が回転楕円面を有するグレ
ゴリアン型アンテナについても同様に実施できる。In the above embodiment, for example, the small antenna (6) uses a front feed type antenna having a primary radiator on its rotational symmetry axis. Further, although the Cassegrain type antenna in which the sub-reflecting mirror (2) has a hyperboloid is described in the above embodiment, the same can be applied to a Gregorian type antenna in which the sub-reflecting mirror (2) has a spheroidal surface.
以上の通り、この発明によれば小アンテナを大アンテ
ナの副反射鏡にパイプで接続されて一体化するように構
成したので、重量の増加も少なく副反射鏡の位置調整だ
けで両アンテナのビーム軸を容易に調整できるアンテナ
装置が得られる効果がある。As described above, according to the present invention, the small antenna is connected to the sub-reflecting mirror of the large antenna by a pipe so as to be integrated with each other. There is an effect that an antenna device whose axis can be easily adjusted is obtained.
第１図はこの発明の一実施例であるアンテナ装置を示す
半断面図、第２図は従来のアンテナ装置を示す半断面
図、第３図及び第４図は第２図に示すアンテナ装置の一
部拡大図である。 図において、（１）はパラボラ鏡面、（２）は副反射
鏡、（６）は小アンテナ、（８）はパイプである。 図中、同一符号は同一又は相当部分を示す。FIG. 1 is a half sectional view showing an antenna device according to an embodiment of the present invention, FIG. 2 is a half sectional view showing a conventional antenna device, and FIGS. 3 and 4 show the antenna device shown in FIG. It is a partially enlarged view. In the figure, (1) is a parabolic mirror surface, (2) is a sub-reflecting mirror, (6) is a small antenna, and (8) is a pipe. In the drawings, the same reference numerals indicate the same or corresponding parts.
フロントページの続き (56)参考文献 特開 昭51−86380（ＪＰ，Ａ)Continuation of front page (56) References JP-A-51-86380 (JP, A)
Claims (1)
反射鏡を有する大アンテナと、この大アンテナのビーム
幅より広いビーム幅特性を有し、上記副反射鏡にパイプ
で接続されて上記副反射鏡と一体化された小アンテナ
と、上記副反射鏡の位置を調整することにより、上記大
アンテナと上記小アンテナのビーム軸を調整する調整手
段とを備えたことを特徴とするアンテナ装置。1. A large antenna having a sub-reflecting mirror on its axis of rotational symmetry facing a parabolic mirror, and having a beam width characteristic wider than the beam width of the large antenna, connected to the sub-reflecting mirror by a pipe. An antenna comprising: a small antenna integrated with the sub-reflecting mirror; and adjusting means for adjusting the beam axes of the large antenna and the small antenna by adjusting the position of the sub-reflecting mirror. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62044880A JPH0831740B2 (en) | 1987-02-27 | 1987-02-27 | Antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62044880A JPH0831740B2 (en) | 1987-02-27 | 1987-02-27 | Antenna device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63211903A JPS63211903A (en) | 1988-09-05 |
| JPH0831740B2 true JPH0831740B2 (en) | 1996-03-27 |
Family
ID=12703805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62044880A Expired - Fee Related JPH0831740B2 (en) | 1987-02-27 | 1987-02-27 | Antenna device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0831740B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2584650B1 (en) * | 2011-10-17 | 2017-05-24 | MacDonald, Dettwiler and Associates Corporation | Wide scan steerable antenna with no key-hole |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5186380A (en) * | 1975-01-28 | 1976-07-28 | Meisei Electric Co Ltd | JOHOSHINGOYOJIDOTSUIBISOCHI |
-
1987
- 1987-02-27 JP JP62044880A patent/JPH0831740B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63211903A (en) | 1988-09-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |