JPS58103205A - Antenna device - Google Patents
Antenna deviceInfo
- Publication number
- JPS58103205A JPS58103205A JP20194781A JP20194781A JPS58103205A JP S58103205 A JPS58103205 A JP S58103205A JP 20194781 A JP20194781 A JP 20194781A JP 20194781 A JP20194781 A JP 20194781A JP S58103205 A JPS58103205 A JP S58103205A
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- attenuator
- reflector
- sub
- phase shifter
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/44—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
- H01Q3/46—Active lenses or reflecting arrays
Landscapes
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Description
【発明の詳細な説明】
この発明はある特定方向からの干渉を軽減するためにア
ンテナのサイドロープを制御することのできるアンテナ
に関するものである。さらにくわしくいえば９反射鏡を
使用するアンテナに幹いて、ある特定方向のサイドロー
プを低くすることのできるアンテナに関するものである
従来のこの種アンテナとして受信アンテナの場合を例に
とると第１図に示すように主アンテナの他に干渉波源の
方向に主放射方向を向けた副アンテナを設け、主アンテ
ナ及び副アンテナで受信した干渉波が打消しあうように
合成することによシ、見かけ土庄アンテナの干渉波源の
方向のサイドロープを低くなるようにしていたすなわち
、第１図において、干渉波源の方向に主放射方向を向け
た副アンテナ（２）で受信された干渉波は可変減衰器（
３）と可変移相器（４）を通シ、合成回路（５）で、主
アンテナ（１１の干渉波源方向のサイドロープで受信さ
れた干渉波と合成される。この時１合成回路（５）の出
力（６）で干渉波出力が零になるように可変減衰器（３
）と可変移相器（４）を調整しておけば、干渉波の出力
はなく希望波のみが出力（６）にあられれる。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an antenna that can control the side ropes of the antenna in order to reduce interference from a certain direction. More specifically, it relates to an antenna that is attached to an antenna that uses 9 reflectors and can lower the side rope in a certain direction.As an example of a conventional antenna of this kind, a receiving antenna is shown in Figure 1. As shown in Figure 2, in addition to the main antenna, a sub-antenna is provided with the main radiation direction facing the interference wave source, and the interference waves received by the main antenna and the sub-antenna are combined so that they cancel each other out. In other words, in Fig. 1, the interference waves received by the sub-antenna (2) whose main radiation direction is directed toward the interference wave source are lowered by the side rope of the antenna in the direction of the interference wave source.
3) and the variable phase shifter (4), and is combined with the interference wave received by the side rope in the interference wave source direction of the main antenna (11) in the combining circuit (5). ) variable attenuator (3) so that the interference wave output becomes zero at the output (6) of
) and the variable phase shifter (4), there will be no interference wave output and only the desired wave will be output at the output (6).
しかしながら、第１図に示すような構成では、主アンテ
ナ（１）と合成回路（５）及び副アンテナ（２）と合成
回路（５）の間の電気長を広帯域にわたって一致させる
ことはほとんど不可能にちかく、狭帯域の性能しか得ら
れなかった。また干渉波源の方向が変わった場合には、
副アンテナ（２）の方向を変えるとともに、可変減衰器
（３）と可変移相器（４）を再調整をする必要があると
いう欠点があった。However, with the configuration shown in Figure 1, it is almost impossible to match the electrical lengths between the main antenna (1) and the combining circuit (5) and between the auxiliary antenna (2) and the combining circuit (5) over a wide band. Unfortunately, only narrowband performance was obtained. Also, if the direction of the interference wave source changes,
There was a drawback that it was necessary to change the direction of the sub-antenna (2) and readjust the variable attenuator (3) and variable phase shifter (4).
この発明はこれらの欠点を解決するために。This invention aims to solve these shortcomings.
副アンテナを透過形フェイズドアレイアンテナ構成とし
、主アンテナの開口面の一部をふさぐように設置して、
主アンテナからの放射波の一部を利用することにより１
合成回路を不用とし、またフェイズドアレイアンテナ内
の移相器。The secondary antenna is configured as a transparent phased array antenna, and is installed so as to partially block the aperture of the main antenna.
By using part of the radiation waves from the main antenna,
Eliminates the need for a synthesis circuit and also uses a phase shifter in a phased array antenna.
減衰器を制御することにより、干渉波源の方向が変わっ
てもアンテナを動かすことなく対応できるようにしたも
ので、以下図面について詳細に説明する。By controlling the attenuator, it is possible to cope with changes in the direction of the interference wave source without moving the antenna.The drawings will be explained in detail below.
第２図はこの発明の一実施例であって、軸は一次放射器
、Ｉはパラボラ反射鏡１輪は反射鏡の開口面の一部をふ
さぐように、対向した透過形フェイズドアレイ構成の副
アレイアンテナ。FIG. 2 shows an embodiment of the present invention, in which the axis is a primary radiator, I is a parabolic reflector, and one parabolic reflector is a sub-transmissive phased array configuration that faces each other so as to block a part of the aperture of the reflector. array antenna.
（１２ａ）及び（１２ｄ）は放射素子、 （１２ｂ）
は移相器、（１２ｃ）は減衰器、ａｌは開口面である。(12a) and (12d) are radiating elements, (12b)
is a phase shifter, (12c) is an attenuator, and al is an aperture surface.
第８図図において、−次放射器員から放射された電波は
パラボラ反射鏡Ｉで反射されて、開口面一て等位相とな
る。副プレイアンテナ（ｌコは放射素子（１２ａ）が開
口面０の一部をふさぐように配列されておシ、放射素子
（１２ａ）から入射した電波は移相器（Ｌ２ｂ ）と減
衰器（１２ｅ）を通シ、放射素子（１２ｄ）から放射さ
れる。そして前記移相器（１２ｂ）と減衰器（１２ｃ）
を外部から電子制御して。In FIG. 8, the radio waves emitted from the -order radiator are reflected by the parabolic reflector I, and the aperture surfaces all have the same phase. The sub-play antenna (L) has radiating elements (12a) arranged so as to partially block the aperture 0, and the radio waves incident from the radiating elements (12a) are transmitted through a phase shifter (L2b) and an attenuator (12e). ) and is radiated from the radiating element (12d).Then, the phase shifter (12b) and the attenuator (12c)
electronically controlled from the outside.
電波に所要の位相推移と減衰と与えることによシ、副プ
レイアンテナ的として希望する放射指向性を得ることが
できる。また副アレイアンテナα■の放射指向性の方向
のみを変化する場合には、減衰器（１２ｃ）はあらかじ
め設定した固定の減衰器でよ〈又４使用しなくてもよい
。したがって、副プレイアンテナ（２）以外の開口面α
３からの放射電波の指向性においである特定の方向のサ
イドロープを干渉のため低くしたい場合には、副プレイ
アンテナ＠の指向性の主ビームを前記サイドロープの方
向に向けて、振＠を一致させて１位相を逆相にすること
により実現できる。副プレイアンテナＣｌ７Ｊの大きさ
は、主アンテナのサイドロープのうち、干渉を避けるた
め低くしようとする方向のレベルによシ決まる。By giving the radio waves the required phase shift and attenuation, it is possible to obtain the desired radiation directivity as a secondary play antenna. Further, when only the direction of the radiation directivity of the sub-array antenna α is changed, the attenuator (12c) may be a fixed attenuator set in advance, or may not be used. Therefore, the aperture surface α other than the sub-play antenna (2)
If you want to lower the side rope in a certain direction due to interference in the directivity of the radiated radio waves from 3, direct the directional main beam of the sub-play antenna in the direction of the side rope, and This can be realized by making them match and making one phase the opposite phase. The size of the auxiliary play antenna Cl7J is determined by the level of the side rope of the main antenna, which direction is to be lowered to avoid interference.
通常のパラボラアンテナにおいては、サイドロープレベ
ルは約−２０ｄＢ以下であるので、開口面（２）に対し
て副アレイアンテナＱ２の大きさは相当に小さくする仁
とができ構成上及び構造上の問題は危い。In a normal parabolic antenna, the side rope level is approximately -20 dB or less, so the size of the sub array antenna Q2 must be made considerably smaller with respect to the aperture surface (2), resulting in configuration and structural problems. is dangerous.
以上説明したように、この発明によれば、従来主アンテ
ナの他に副アンテナを設置し、この両アンテナ間の干渉
波に対する振幅及び位相を調整して合成する回路を必要
としていたものが、アンテナの開口面上の一部に副プレ
イアンテナを設け、このアンテナを透過形フェイズドア
レイアンテナ内テナこと。によシ、振幅及び位相を調整
して合成する回路が不要となり、ｔたサイドロープを低
くしたい方向を変える場合に副アレイアンテナ内の移相
器及び減衰器を外部から電子的に制御するだけでよく、
アンテナＯ設置方向を変えるといったことは必要ないと
いう利点がある。さらに副プレイアンテナの各放射素子
は主アンテナの開口面上にあるので、給電線路は゛不用
であシ、また移相器、減衰器の長さを短かくすることに
よシ、副アレイアンテナからの放射波の位相の周波ａｌ
ｆ！ｊ性は、主アンテナの周波数特性に近くすることが
でき、広帯域表特性が得られるという利点がある。As explained above, according to the present invention, the antenna that conventionally required a sub antenna to be installed in addition to the main antenna and a circuit for adjusting and synthesizing the amplitude and phase of interference waves between both antennas can be replaced with an antenna. A sub-play antenna is installed on a part of the aperture surface of the antenna, and this antenna is called the antenna inside the transmission type phased array antenna. In addition, there is no need for a circuit that adjusts and synthesizes the amplitude and phase, and when changing the direction in which you want to lower the side rope, you can simply electronically control the phase shifter and attenuator in the sub-array antenna from the outside. Well,
This has the advantage that it is not necessary to change the installation direction of the antenna O. Furthermore, since each radiating element of the sub-array antenna is located on the aperture of the main antenna, there is no need for a feed line, and by shortening the length of the phase shifter and attenuator, it is possible to The phase frequency al of the radiation wave of
f! The J characteristic has the advantage that it can be made close to the frequency characteristic of the main antenna, and a wideband table characteristic can be obtained.
なお１以上の説明はパラボラアンテナの一実施例につい
て説明したが９反射鏡を使用する他の形式のアンテナ、
たとえばホーンリフレクタアンテナ、カセグレンアンテ
ナ、オフセットアンテナ等に対しても同様に実施するこ
とにより、同じ効果が得られる。Note that although the above description has been about one embodiment of a parabolic antenna, other types of antennas using nine reflectors,
For example, the same effect can be obtained by applying the same method to a horn reflector antenna, a Cassegrain antenna, an offset antenna, etc.
このようにこの発明による干渉波を軽減することのでき
るアンテナ装置は簡単にサイドロープの低くしたい方向
を変えることができ、１１た広帯域な特性を得ることが
できるもので、実用上の価値は大きい。As described above, the antenna device according to the present invention that can reduce interference waves can easily change the direction in which the side rope is desired to be lowered, and can obtain broadband characteristics, which has great practical value. .
【図面の簡単な説明】
第１図は従来のアンテナ装置を示す構成図。
第２図は本発明によるアンテナ装置の一実施例を示す断
面図、第３図は第２図のアンテナ装置の正面図である。
（１）・・・主アンテナ、（２）・・・副アンテナ、（
３）・・・可変減衰器、（４）・・・可変移相器、αｅ
・・・−次放射器、ａＤ・・・反射鏡、ａａ・・・副プ
レイアンテナ、 （１２ａ）・・・放射素子、 （
１２ｂ）・・・移相器、 （１２ｃ）・・・減衰器、
（１２ｄ）・・・放射素子、 ａＳ・・・開口面なお１
図中同一あるいは相当部分には同一符号を付して示しで
ある。
代理人 葛 野 信 −
１１ＩＦＩＩＪ
／BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing a conventional antenna device. FIG. 2 is a sectional view showing an embodiment of the antenna device according to the present invention, and FIG. 3 is a front view of the antenna device shown in FIG. 2. (1)...Main antenna, (2)...Sub antenna, (
3)...variable attenuator, (4)...variable phase shifter, αe
...-Next radiator, aD...Reflector, aa...Sub play antenna, (12a)...Radiating element, (
12b)...phase shifter, (12c)...attenuator,
(12d)...Radiating element, aS...Aperture surface 1
Identical or corresponding parts in the figures are indicated by the same reference numerals. Agent Shin Kuzuno - 11IFIIJ /
Claims (1)
に対向して配置され、電波を反射させる反射鏡と、この
反射鏡の開口面の７部をふさぐ工うに、放射素子、減衰
器、及び移相器を階層状に配置して構成した複数個のプ
レイ素子とで構成したことを特徴とするアンテナ装置。A primary radiator that emits or receives radio waves, a reflector that is placed opposite to this secondary radiator and reflects radio waves, and a radiating element and an attenuator that block seven portions of the aperture of this reflector. , and a plurality of play elements configured by arranging phase shifters in a hierarchical manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20194781A JPS58103205A (en) | 1981-12-15 | 1981-12-15 | Antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20194781A JPS58103205A (en) | 1981-12-15 | 1981-12-15 | Antenna device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58103205A true JPS58103205A (en) | 1983-06-20 |
| JPH0119644B2 JPH0119644B2 (en) | 1989-04-12 |
Family
ID=16449407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20194781A Granted JPS58103205A (en) | 1981-12-15 | 1981-12-15 | Antenna device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58103205A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5999137A (en) * | 1996-02-27 | 1999-12-07 | Hughes Electronics Corporation | Integrated antenna system for satellite terrestrial television reception |
| US6937879B2 (en) | 1998-03-12 | 2005-08-30 | Interdigital Technology Corporation | Adaptive cancellation of fixed interferers |
| JP2012502534A (en) * | 2008-09-05 | 2012-01-26 | アストリウム・リミテッド | Antenna reflector |
| US9190716B2 (en) | 2008-09-05 | 2015-11-17 | Astrium Limited | Reflector |
-
1981
- 1981-12-15 JP JP20194781A patent/JPS58103205A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5999137A (en) * | 1996-02-27 | 1999-12-07 | Hughes Electronics Corporation | Integrated antenna system for satellite terrestrial television reception |
| US6937879B2 (en) | 1998-03-12 | 2005-08-30 | Interdigital Technology Corporation | Adaptive cancellation of fixed interferers |
| US7519395B2 (en) | 1998-03-12 | 2009-04-14 | Interdigital Technology Corporation | Adaptive cancellation of fixed interferers |
| JP2012502534A (en) * | 2008-09-05 | 2012-01-26 | アストリウム・リミテッド | Antenna reflector |
| US9190716B2 (en) | 2008-09-05 | 2015-11-17 | Astrium Limited | Reflector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0119644B2 (en) | 1989-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6243049B1 (en) | Multi-pattern antenna having independently controllable antenna pattern characteristics | |
| US5710569A (en) | Antenna system having a choke reflector for minimizing sideward radiation | |
| US4516130A (en) | Antenna arrangements using focal plane filtering for reducing sidelobes | |
| US4376940A (en) | Antenna arrangements for suppressing selected sidelobes | |
| US4096483A (en) | Reflector with frequency selective ring of absorptive material for aperture control | |
| JPS58103205A (en) | Antenna device | |
| JP3322897B2 (en) | Mirror modified antenna | |
| US4356494A (en) | Dual reflector antenna | |
| JPH05275920A (en) | Mirror correcting antenna | |
| JPH0119641B2 (en) | ||
| JPS58103204A (en) | Antenna device | |
| US4516129A (en) | Waveguide with dielectric coated flange antenna feed | |
| US6037904A (en) | Antenna with diffraction grating modulator | |
| JPS58101509A (en) | Antenna device | |
| KR960039483A (en) | Radio interference cancellation directional antenna device | |
| US3224006A (en) | Horn reflector antenna with concentric conical reflectors at mouth to increase effective aperture | |
| US3408653A (en) | Antenna system compensating for prism effect utilizing control means at the signal feed | |
| JP2982185B2 (en) | Aperture antenna | |
| US3204243A (en) | Main reflector and feed system with aperture blocking correction | |
| JPS58177006A (en) | Reflecting mirror antenna | |
| JPS6172403A (en) | Antenna system | |
| JP2540979B2 (en) | Parabolic antenna system | |
| JPS601762B2 (en) | reflector antenna | |
| JPH0354423Y2 (en) | ||
| JPS5944108A (en) | Double reflecting mirror antenna commonly used for multi-frequency band |