JPS5927606A - Antenna device - Google Patents

Antenna device

Info

Publication number
JPS5927606A
JPS5927606A JP13765482A JP13765482A JPS5927606A JP S5927606 A JPS5927606 A JP S5927606A JP 13765482 A JP13765482 A JP 13765482A JP 13765482 A JP13765482 A JP 13765482A JP S5927606 A JPS5927606 A JP S5927606A
Authority
JP
Japan
Prior art keywords
reflector
beam switching
focused
focusing
feeding system
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
Application number
JP13765482A
Other languages
Japanese (ja)
Inventor
Shinichi Betsudan
信一 別段
Takenori Masuda
増田 剛徳
Katsuhiko Aoki
青木 克比古
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP13765482A priority Critical patent/JPS5927606A/en
Publication of JPS5927606A publication Critical patent/JPS5927606A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/002Antennas or antenna systems providing at least two radiating patterns providing at least two patterns of different beamwidth; Variable beamwidth antennas

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

PURPOSE:To prevent the deterioration in the gain, by providing a beam switching reflecting plate to a beam focus of a focusing beam transmission line so as to reduce the size of the beam switching reflecting plate. CONSTITUTION:The focusing beam feeding system 8 consists of focusing reflecting mirrors 81, 82, 83, 84, which are provided to fix a primary radiator 3 and a receiver 4 on ground. A beam focus 8a of the beam feeding system 8 is constituted so as to come to the vicinity of a top of a main reflecting mirror 1, and a beam switching reflecting plate 5 is provided to this position. An incoming wave 7a is stopped at the beam focus 8a via the main reflecting mirror 1 and a sub-reflecting mirror 2 and led to the primary radiator 3 and the receiver 4 via the focusing reflecting mirrors 81, 82, 83, 84. The beam switching reflecting plate 5 is turned in a prescribed period to cut off the incoming wave 7a and to lead an incoming wave 7b to the focusing reflecting mirror 81.

Description

【発明の詳細な説明】 この発明は電波天文の分野で電波層の観測に使用される
、ビームスイツチング装置を有するアンテナ装置に関す
るものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an antenna device having a beam switching device used for observing a radio layer in the field of radio astronomy.

従来、この種の装置として第1図に示すものがあった。Conventionally, there has been a device of this type as shown in FIG.

図において、(1)は主反射鏡、(2)は副反射鏡、(
3)は電波層からの到来波を受信機(4)に導く一次放
射器である。また(9)はビームスイツチング装置であ
り、このビームスイツチング装置(9)はビームスイツ
チング用反射板(5)と、これに直結されこれを第1図
矢印(6)の方向に回転させるための回転駆動装置とか
ら構成されている。
In the figure, (1) is the main reflector, (2) is the sub-reflector, (
3) is a primary radiator that guides the arriving wave from the radio layer to the receiver (4). Also, (9) is a beam switching device, and this beam switching device (9) is directly connected to the beam switching reflector (5) and rotates it in the direction of arrow (6) in Figure 1. It consists of a rotary drive device for

次に動作について説明する。Next, the operation will be explained.

ある電波層からの到来波(7a)は主反射鏡(1)、副
反射鏡(2)を介して一次放射器(3)及び受信機(4
)に導かれる。この副反射鏡(2)と−次放射器(3)
との間に置かれたビームスイツチング用反射板(5)は
一定周期で回転し、ある時間、到来波(7a)を遮断す
るためのものである。上記遮断時には、観測したい電波
層からの到来波(7a)を除く到来波(71が反射板(
5)により一次放射器(3)及び受信機(4)に導かれ
る。
An arriving wave (7a) from a certain radio wave layer passes through a main reflector (1) and a sub-reflector (2) to a primary radiator (3) and a receiver (4).
). This sub-reflector (2) and -order radiator (3)
A beam switching reflector (5) placed between the two rotates at a constant period to block the incoming waves (7a) for a certain period of time. At the time of the above-mentioned interruption, the incoming waves excluding the incoming wave (7a) from the radio layer to be observed (71 is the reflector (
5) to the primary radiator (3) and receiver (4).

このようなビームスイツチングは電波天文のように宇宙
からの微弱な電波を測定するためには不可欠な手段であ
り、これは、観測したい電波星からの到来波(7a)を
遮断した時のいわゆる電波星の背景の雑音電力を周期的
に検出し、それを基準とすることにより目標とする電波
星の雑音電力を精度よく検出することができるものであ
る。
This type of beam switching is an essential means for measuring weak radio waves from space, such as in radio astronomy. By periodically detecting the background noise power of a radio star and using it as a reference, it is possible to accurately detect the noise power of the target radio star.

従来のビームスイツチング装置(9)は以上のように構
成されているので、主反射鏡(1)上にビームスイツチ
ング装置(9)を設置しなければならず、アンテナ開口
のブロッキングによる利得劣化を抑えるために一次放射
器(3)寸法をできる限り小さくすることが必要であっ
た。
Since the conventional beam switching device (9) is configured as described above, it is necessary to install the beam switching device (9) on the main reflecting mirror (1), resulting in gain deterioration due to blocking of the antenna aperture. In order to suppress this, it was necessary to make the dimensions of the primary radiator (3) as small as possible.

この発明は上記のような従来のものの欠点を除去するた
めになされたもので、−次放射器、受信機を地上に固定
する集束ビーム給電方式を採用してビーム焦点が適当な
位置に来るよう構成することにより、ビームスイツチン
グ反射板を小さくできるアンテナ装置を提供することを
目的としている。
This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and it adopts a focused beam feeding system in which the -order radiator and receiver are fixed on the ground so that the beam focus is at an appropriate position. It is an object of the present invention to provide an antenna device in which a beam switching reflector can be made smaller by configuring the antenna device.

以下、この発明の一実施例を図について説明する。An embodiment of the present invention will be described below with reference to the drawings.

第2図において、(811i82(転))(財)は集束
ビーム給電系(8)を構成する集束反射鏡であり、−次
放射器(3)。
In FIG. 2, (811i82) (Incorporated) is a focusing reflector that constitutes a focused beam feeding system (8), and is a -order radiator (3).

受信機(4)を地上に固定するために設けられたもので
ある。また(8a)は集束ビーム給電系(8)のビーム
焦点であり、該ビーム焦点(8a)は主反射鏡(1)の
頂点付近に来るよう構成されている。その他の構成は従
来と同様である。
It is provided to fix the receiver (4) on the ground. Further, (8a) is the beam focus of the focused beam feeding system (8), and the beam focus (8a) is configured to be near the apex of the main reflecting mirror (1). Other configurations are the same as before.

次に動作について説明する。Next, the operation will be explained.

到来波(7a)は主反射鏡(])、副反射鏡(2)を介
してビーム焦点(8a)で絞られ、集束ビーム反射鏡f
811 ([(831(財)を介して一次放射器(3)
及び受信機(4)に導かれる。従ってビーム焦点(8a
)(を近にビームスイツチング装置(9)を設ければ、
ビームスイツチング用反射板を小さくすることができ、
しかも従来と同様なビームスイツチングを行なうことが
できる。
The arriving wave (7a) is focused at the beam focus (8a) via the main reflector (]) and the sub-reflector (2), and is focused at the focused beam reflector f.
811 ([(831 (Foundation) through primary radiator (3)
and a receiver (4). Therefore, the beam focus (8a
) (If a beam switching device (9) is installed near the
Beam switching reflector can be made smaller,
Moreover, beam switching similar to that of the conventional method can be performed.

なお上記実施例では集束ビーム給電系が4枚の反射板か
ら構成される場合について説明したが、該集束ビーム給
電系を構成する反射板の数はこれに限るものではない。
In the above embodiment, a case has been described in which the focused beam feeding system is composed of four reflecting plates, but the number of reflecting plates constituting the focused beam feeding system is not limited to this.

以上のようにこの発明によれば、アンテナ装置において
、−次放射器、受信機を地上に固定できるよう集束ビー
ム給電方式とし、ビームスイツチング用反射板を集束ビ
ーム伝送路のビーム焦点付近に設けたので、ビームスイ
ツチング装置が小形化され、アンテナ開口のブロッキン
グによる利得劣化を抑えることができ、精度の高いアン
テナ装置が得られる効果がある。
As described above, according to the present invention, in the antenna device, a focused beam feeding system is used so that the -order radiator and receiver can be fixed on the ground, and a reflector for beam switching is provided near the beam focus of the focused beam transmission path. Therefore, the beam switching device can be downsized, gain deterioration due to blocking of the antenna aperture can be suppressed, and a highly accurate antenna device can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は従来のビームスイツチング装置を設置したアン
テナ装置の構成図、第2図は本発明の一実施例によるア
ンテナ装置の構成図である。 (1)・・・主反射鏡、(2)・・・副反射鏡、(3)
・・・−次放射器、(4)・・・受信機、(5)・・・
ビームスイツチング用反射板、(6)・・・回転駆動装
置、(7a)(7b)・・・到来波(ビーム)、t81
1 (821t)L”(l f841−・・集束反射鏡
、(8a)−=ビーム焦点、(9) ・・・ビームスイ
ツチング装置。 なお図中、同一符号は同−又は相当部分を示す。 代理人 葛野信− 第1図
FIG. 1 is a block diagram of an antenna device equipped with a conventional beam switching device, and FIG. 2 is a block diagram of an antenna device according to an embodiment of the present invention. (1) Main reflector, (2) Sub-reflector, (3)
...-next radiator, (4)...receiver, (5)...
Reflector for beam switching, (6)... Rotation drive device, (7a) (7b)... Arrival wave (beam), t81
1 (821t)L''(l f841--Focusing reflector, (8a)-=Beam focal point, (9)--Beam switching device. In the figures, the same reference numerals indicate the same or corresponding parts. Agent Makoto Kuzuno - Figure 1

Claims (2)

【特許請求の範囲】[Claims] (1)主反射鏡及び副反射鏡を有するアンテナ本体と、
集束ビーム伝送路のビーム焦点付近に設けられたビーム
スイツチング用反射板及び該ビームスイツチング用反射
板を回転駆動する回転駆動装置からなるビームスイツチ
ング装置と、複数の反射板からなり上記アンテナ本体に
より集束せられたビームあるいは上記ビームスイツチン
グ用反射板により反射せられたビームを受ける集束ビー
ム給電系と、上記集束ビーム給電系を介して導かれるビ
ームが入力される一次放射器及び受信機とを備えたこと
を特徴とするアンテナ装置。
(1) An antenna body having a main reflector and a sub-reflector;
a beam switching device consisting of a beam switching reflector provided near the beam focal point of the focused beam transmission path and a rotation drive device for rotationally driving the beam switching reflector; and the antenna body consisting of a plurality of reflectors. a focused beam feeding system that receives a beam focused by the beam or a beam reflected by the beam switching reflector, and a primary radiator and a receiver into which the beam guided via the focused beam feeding system is input. An antenna device comprising:
(2)上記集束ビーム給電系が4枚の反射板により構成
されていることを特徴とする特許請求の範囲第1項記載
のアンテナ装置。
(2) The antenna device according to claim 1, wherein the focused beam feeding system is constituted by four reflecting plates.
JP13765482A 1982-08-05 1982-08-05 Antenna device Pending JPS5927606A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13765482A JPS5927606A (en) 1982-08-05 1982-08-05 Antenna device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13765482A JPS5927606A (en) 1982-08-05 1982-08-05 Antenna device

Publications (1)

Publication Number Publication Date
JPS5927606A true JPS5927606A (en) 1984-02-14

Family

ID=15203691

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13765482A Pending JPS5927606A (en) 1982-08-05 1982-08-05 Antenna device

Country Status (1)

Country Link
JP (1) JPS5927606A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02299303A (en) * 1989-05-12 1990-12-11 Nec Corp Antenna system
JP2008510441A (en) * 2004-08-12 2008-04-03 ザ・ボーイング・カンパニー Method and apparatus for mounting a rotating reflector antenna for minimizing swept arcs
JP2009194829A (en) * 2008-02-18 2009-08-27 Mitsubishi Electric Corp Radome

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02299303A (en) * 1989-05-12 1990-12-11 Nec Corp Antenna system
JP2008510441A (en) * 2004-08-12 2008-04-03 ザ・ボーイング・カンパニー Method and apparatus for mounting a rotating reflector antenna for minimizing swept arcs
JP2009194829A (en) * 2008-02-18 2009-08-27 Mitsubishi Electric Corp Radome

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