JPS58197901A - Offset parabolic antenna - Google Patents
Offset parabolic antennaInfo
- Publication number
- JPS58197901A JPS58197901A JP8077082A JP8077082A JPS58197901A JP S58197901 A JPS58197901 A JP S58197901A JP 8077082 A JP8077082 A JP 8077082A JP 8077082 A JP8077082 A JP 8077082A JP S58197901 A JPS58197901 A JP S58197901A
- Authority
- JP
- Japan
- Prior art keywords
- excited
- antenna
- horn
- offset parabolic
- parabolic antenna
- 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
Links
- 210000003127 knee Anatomy 0.000 claims description 6
- 210000003414 extremity Anatomy 0.000 claims description 5
- 230000010287 polarization Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 235000013372 meat Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
- H01Q19/17—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
Abstract
Description
【発明の詳細な説明】
この発明はマイクロ波帝あるいはミリ披帝で使用され１
反射鏡と一次放射器と刀為らＷｆｆｔされるオフセット
パラボラアンテナの改良ＶＣ関するものである。[Detailed Description of the Invention] This invention is used in microwave technology or milliwave technology.
The present invention relates to an improved VC of an offset parabolic antenna using a reflector, a primary radiator, and Katatae et al.
この櫨オフセットパラボラアンテナは第１図に示すよう
に一次放射器山と反射ｍ（２１から構成さｎている。と
ころで従来、上記−次放射器として第２図に示すような
角錐ホーン（３）あるいは円錐ホーン（４）を用いてい
た。このような角錐ホーン＋３１ある、 いは円錐ホー
ン（４Ｊを用いていた。このようなオフセットパラボラ
アンテナにおいて、パラボラの焦点を原点とし、ＷｔＳ
における対称面（垂直となる方向をＹ軸１反射−（２）
で反射後の平ｌＩＤ彼の進行方向を２軸正方向とする直
交座像糸ＸＹｚを設定する。As shown in Fig. 1, this oak offset parabolic antenna consists of a primary radiator peak and a reflector m (21).By the way, conventionally, as the above-mentioned -order radiator, a pyramidal horn (3) as shown in Fig. 2 was used. Alternatively, a conical horn (4) was used. Such a pyramidal horn +31 or a conical horn (4J) was used. In such an offset parabolic antenna, the focal point of the parabola is the origin, and the WtS
plane of symmetry (Y-axis 1 reflection in the perpendicular direction - (2)
An orthogonal sitting image thread XYz is set in which the traveling direction of the flat ID after reflection is the positive direction of the two axes.
上記オフセットパラボラアンテナを直ｍｍａで励振した
場合１反射ｍ１２１６ｃよって父産偏Ｕ成分を生じる。When the offset parabolic antenna is excited with direct mma, a paternally biased U component is generated by one reflection m1216c.
交差ｍ波成分の放射パターンはＸ２面に対して内体で２
軸に対して肉−の−一のピークにおける位相は互いＩＣ
３８０度典なル１生諺仮成分のピーク方向の位相に対し
てそれぞれ９０度１４なる。The radiation pattern of the crossed m-wave component is 2 in the inner body with respect to the X2 plane.
The phases at the -1 peak of meat with respect to the axis are mutually IC
380 degrees are each 90 degrees relative to the phase in the peak direction of the temporary component.
従って、このようなアンテナを円ｔｍｓで励振した場合
の放射パターンにおいて、右旋同一波で励振した場合の
主ビームのピーク方向と、左旋８疲で＠振した場合の生
ビームのピーク方向はＺ＠方同よシずれ、これら二つの
方向はＸ２面に対して対称となっている。Therefore, in the radiation pattern when such an antenna is excited with a circle tms, the peak direction of the main beam when excited with a clockwise rotation same wave and the peak direction of the raw beam when excited with a left rotation 8 fatigue are Z These two directions are symmetrical with respect to the X2 plane.
従うて上記オフセットパラボラアンテナを、直交する二
つの円−波で励振した署会、谷１Ｍ肢の土と−ムのピー
ク方向が互いにずれるので、一方の主ビームのピークを
目標方向に合わせると他方の主ビームのピークが目標方
向からずれ、利得の低下を生じるという欠点があった。Therefore, when the offset parabolic antenna is excited with two orthogonal circular waves, the peak directions of the two main beams of the valley 1M limb are shifted from each other, so when the peak of one main beam is aligned with the target direction, the peak direction of the main beam of the other is shifted. The main beam peak deviates from the target direction, resulting in a decrease in gain.
この発明は°このような欠点を除去するために。This invention ° to eliminate such drawbacks.
−次放射器として直交する二つの偏技で励ａｉ！される
直交二ｍｓ共州都と片方の一収で＠振される一波率一部
からｍ成したホーンアンテナを用いたもので、以下図面
についてこの発明をｓＭに説明する。- Encourage ai with two orthogonal bias techniques as the next radiator! This invention uses a horn antenna formed from orthogonal 2 ms co-state capitals and a part of one wave factor that is oscillated with one wave on one side.This invention will be explained below with reference to the drawings.
第３図はこの発明の実施列を示す図で第３図においてホ
ーンアンテナは直交する二つの円１ａ鼓で励振される直
父二偏技共州都（５）と、右旋あるいは左旋の片方の円
１ｋＡｆＲで＠振される１ｌｉｉＩ鼓率一部（６）とか
ら構成され、上記−８共用部（５）と上記−汲率一部（
６）がオフセットパラボラアンテナの＃１造における対
称面と垂直となる方向（Ｙ軸方向）に配置しである。Fig. 3 is a diagram showing the implementation sequence of this invention. In Fig. 3, the horn antenna is excited by two orthogonal circular drums (1a); It is composed of the 1liiii drum part (6) which is shaken at 1 kAfR, and the -8 common part (5) and the -8 drum part (6).
6) is arranged in the direction (Y-axis direction) perpendicular to the plane of symmetry in the #1 structure of the offset parabolic antenna.
ここで、直焚ニー波共州都のみで励振される偏Ｕを右旋
円偏波とし、直交ニー技共用部と一技率一部で励振され
るｍ波を左旋円偏波とする。反射＊ｔ２１の焦点０に直
交ニーＵ共用部（５）を設置すると、右旋円偏波による
王ビームのピーク方向は、Ｙ軸の負方向へずれる。Here, the polarized U excited only in the direct-fired knee wave co-state capital is assumed to be a right-handed circularly polarized wave, and the m-wave excited in the orthogonal knee technique common area and the one technique part is assumed to be a left-handed circularly polarized wave. When the orthogonal knee U common portion (5) is installed at the focal point 0 of the reflection *t21, the peak direction of the king beam due to the right-handed circularly polarized wave is shifted in the negative direction of the Y-axis.
従って主ビームのピーク方向が２軸方向［同〈ように。Therefore, the peak direction of the main beam is in two axial directions [same as above].
上記直交ニー波共用部（５）をＹ軸の負方向へ移動して
設置する。次に一波単一５（６）を直交二１１１歿−歿
共用部（５）ｄ〜軸正方向側へ設置する。The orthogonal knee wave common portion (5) is moved and installed in the negative direction of the Y-axis. Next, the one-wave single unit 5 (6) is installed from the orthogonal two-way common part (5) d to the positive axis direction side.
従って、直交ニー仮共用＄１５Ｊと１＃ｉ枝阜、一部（
６）で１＠振される左旋円圓歿の場合、直交二ｉｌｉ波
共州都による放射電界と１１ｉＩ波率一部による放射電
界を合成した放射バ、−２゜、、や、。オ、。１ヵ１９
．。１．３カ８７１きるので、土ビームのピーク方向を
２軸の方向へ合わせることができる。Therefore, orthogonal knee temporary common $15J and 1#i branch, some (
6) In the case of a left-handed circular circle that is oscillated by 1@, the radiation field that combines the radiated electric field due to the orthogonal two ili waves and the radiated electric field due to a part of the 11iI wave factor is -2°, , and so on. Oh,. 1 ka 19
．． . 1.3 force 871, the peak direction of the soil beam can be aligned with the two axes.
これらのことより、直交する二つの円偏波で励振し九場
合の各箇肢の生ビームのピーク方向を一放させることが
でき９両−枝共にピークを目標方向に向ける仁とができ
る。From these facts, it is possible to excite with two orthogonal circularly polarized waves and release the peak direction of the raw beam of each limb at once, and it is possible to direct the peaks of both limbs toward the target direction.
なお、ｍ岐阜一部をｍ個用いた場合について説明し九が
、２個用いても同様の効果倉傅ることが゛できる。すな
わち、第４図に示すように、直父二１１ｉ４ｔＩＲ共用
部；５）を焦点Ｏの位置に、Ｙ軸の正方向に左脚円＠１
波でｍｓされるｔ’ｓ単−ｄｔ５（６ａ）ｔ、 Ｙ軸の
・負方向に右旋円偏波でｌｌ１ＪｆＲされる偏叔単一部
（６ｂ）ｔ−設置することによって、各ｍ改の王ビーム
のピーク方向を２軸の方向へ合わせることができる。In addition, although the case where m Gifu portions are used will be explained, the same effect can be obtained even if two pieces are used. That is, as shown in FIG.
By installing t's single part (6b) t, which is ms in the wave, t's single part (6b) t, which is ll1JfR with right-handed circular polarization in the negative direction of the Y axis, each m modification is The peak direction of the king beam can be aligned to two axes.
さらに使用周ａ数が各１！！肢で異なっても同様の効果
が得られる＝
以上説明したように、このようなホーンアンナ、すをオ
フセットパラボラアンテナの一次放射器として用いれば
、直交する二つの円偏波でＦｉＪ振した場合１両ｍ枝の
主ビームのピーク方向を一攻させることができるので、
目標方向に肉ｔｍｓの主ビームのピーク方向を同けるこ
とができ効単よく使用できる。Furthermore, the number of laps used is 1 each! ! The same effect can be obtained even if the limbs are different = As explained above, if such a horn antenna is used as the primary radiator of an offset parabolic antenna, when FiJ oscillation is performed with two orthogonal circularly polarized waves, 1 Since it is possible to attack the peak direction of the main beam of both m branches,
The peak direction of the main beam of the meat TMS can be aligned with the target direction, making it easy to use.
第１図はオフセットパラボラアンテナの構成図。
第２図は従来のホーンアンテナの碑或図、第３図ｔよこ
の発明による一次放射器の一実施例の構成図。
第４図はこの発明による一次放射器の池の実施例の構成
図である。
図中、山は一次放射器、（２）は反射鏡、＋：ｍｓ角遡
ホーン、 ＋４１ｒｉ円錐ホーン、（５ｊは直父二遍肢
共州都。
＋６１ｒｉ−肢率一部、０は焦点である。
なお２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 −
第１図
Ｘ
７１Ｓ２ｖ！Ｊ
第３図
第４図
３Figure 1 is a configuration diagram of an offset parabolic antenna. FIG. 2 is a schematic diagram of a conventional horn antenna, and FIG. 3 is a block diagram of an embodiment of a primary radiator according to the present invention. FIG. 4 is a block diagram of an embodiment of a primary radiator pond according to the present invention. In the figure, the mountain is the primary radiator, (2) is the reflector, +: ms angle retracement horn, +41ri conical horn, (5j is the direct father two-leg joint state capital. +61ri-limb rate part, 0 is the focus The same or corresponding parts in Figure 2 are indicated by the same reference numerals. Agent Makoto Kuzuno - Figure 1 X 71S2v!J Figure 3 Figure 4 Figure 3
Claims (1)
て、上記アンテナの一次放射器として用いられるホーン
アンテナを、ａ父する二つの円ｍ技で励振される直交二
１１ｉ１披共用部と片方の円境彼で励振される偏妓率一
部とから構成し、上記ｍ肢共 ＼州都と上記＊ａ率一部
を９．上記オフセットパラボラアンテナの構造における
対称面と垂直となる方向に配置したことを％徴とするオ
フセットパラボラアンテナ。 （２）１個の直交ニー＆共用部と、互いに偏波の異なる
２イーの寝技率一部から構成され、上記直交二ｍｍ共用
部の両側にそれぞれ偏枝率一部を配置したことを特徴と
する特許請求の範囲オ１項配植のオフセットパラボラア
ンテナ[Claims] Medium Used in the microwave band or millimeter wave band. In an offset parabolic antenna excited by a circle ms, the horn antenna used as the primary radiator of the above antenna is excited by the orthogonal 211i1 common part excited by two circles a and one circle. It consists of a part of the eccentricity rate, and the above m limbs are ＼ state capital, and a part of the above *a rate is 9. An offset parabolic antenna characterized by being arranged in a direction perpendicular to the plane of symmetry in the structure of the offset parabolic antenna. (2) It is composed of one orthogonal knee & common part and a part of the 2E beam ratio with different polarizations, and is characterized in that a part of the polarization ratio is placed on both sides of the orthogonal 2mm common part. Claim 1: Offset parabolic antenna with arrangement
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8077082A JPS58197901A (en) | 1982-05-13 | 1982-05-13 | Offset parabolic antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8077082A JPS58197901A (en) | 1982-05-13 | 1982-05-13 | Offset parabolic antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58197901A true JPS58197901A (en) | 1983-11-17 |
Family
ID=13727648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8077082A Pending JPS58197901A (en) | 1982-05-13 | 1982-05-13 | Offset parabolic antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58197901A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61154205A (en) * | 1984-12-26 | 1986-07-12 | Sharp Corp | Antenna system |
| JPS61212103A (en) * | 1985-03-15 | 1986-09-20 | Sharp Corp | Antenna system |
| JP2009267619A (en) * | 2008-04-23 | 2009-11-12 | Sharp Corp | Multi-feed horn, low noise block downconverter provided with the same, and antenna apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5433701A (en) * | 1978-01-24 | 1979-03-12 | Sanyo Electric Co Ltd | Production of turntable |
-
1982
- 1982-05-13 JP JP8077082A patent/JPS58197901A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5433701A (en) * | 1978-01-24 | 1979-03-12 | Sanyo Electric Co Ltd | Production of turntable |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61154205A (en) * | 1984-12-26 | 1986-07-12 | Sharp Corp | Antenna system |
| JPH0550881B2 (en) * | 1984-12-26 | 1993-07-30 | Sharp Kk | |
| JPS61212103A (en) * | 1985-03-15 | 1986-09-20 | Sharp Corp | Antenna system |
| JPH0547002B2 (en) * | 1985-03-15 | 1993-07-15 | Sharp Kk | |
| JP2009267619A (en) * | 2008-04-23 | 2009-11-12 | Sharp Corp | Multi-feed horn, low noise block downconverter provided with the same, and antenna apparatus |
| US8049675B2 (en) | 2008-04-23 | 2011-11-01 | Sharp Kabushiki Kaisha | Multi-feed horn, low noise block downconverter provided with the same and antenna apparatus |
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