JPS603210A - Antenna in common use for multi-frequency band - Google Patents
Antenna in common use for multi-frequency bandInfo
- Publication number
- JPS603210A JPS603210A JP58110698A JP11069883A JPS603210A JP S603210 A JPS603210 A JP S603210A JP 58110698 A JP58110698 A JP 58110698A JP 11069883 A JP11069883 A JP 11069883A JP S603210 A JPS603210 A JP S603210A
- Authority
- JP
- Japan
- Prior art keywords
- primary radiator
- partial
- partial mirror
- mirror
- point
- 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
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
- H01Q5/45—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の属する技術分野〕
本発明は、マイクロ波帯および準ミリ波帯のアンテナに
関する。特に、２つ以上の周波数帯域を共用し、各周波
数帯域ごとに少なくとも１個以上の送受信ビームを有す
る多周波帯域共用アンテナに関する。DETAILED DESCRIPTION OF THE INVENTION [Technical field to which the invention pertains] The present invention relates to an antenna for microwave bands and sub-millimeter wave bands. In particular, the present invention relates to a multi-frequency band antenna that shares two or more frequency bands and has at least one transmission/reception beam for each frequency band.
複数の地上局を相手とする衛星搭載用アンテナには、地
上局が散在する特定の地域を効率よく照射するために、
放射ビームの断面形状が成形された放射特性を持ち、し
かも衛星の姿勢変動に対しても高い指向精度を持つこと
が望まれる。このようないわゆる成形ビームアンテナと
しては、例えは特開昭５０−９９０６０に記載さ扛たア
ンテナのように、ｂ＼・、形するビームの断面形状に合
わせて主反射鏡鏡面を通常の回転放物面より修整するア
ンテナが知られている。In order to efficiently illuminate a specific area where ground stations are scattered, a satellite-mounted antenna that targets multiple ground stations has a
It is desirable that the cross-sectional shape of the radiation beam has radiation characteristics that are shaped, and that it also has high pointing accuracy even when the attitude of the satellite changes. Such a so-called shaped beam antenna, for example, as in the antenna described in Japanese Patent Application Laid-open No. 50-99060, has a main reflecting mirror that is rotated in a normal manner according to the cross-sectional shape of the shaped beam. Antenna that corrects the object surface is known.
しかしながら、上記アンテナを例えばマイクロ波帯と準
ミＩＪ波帯で共用する場合には、各周波数帯域ごとに独
立に主反射鏡の直径や放射ビームの方向を選定できない
欠点があった。また前述した高い指向精度を得る目的で
、アンテナに自己追尾用のトラッキングパターンを具備
しようとする場合には、主反射鏡の鏡面を非対称に修整
しているために所望のトラッキングパターンが得られず
、高ｆｉ￥度の自己追尾機能を持たせることが困難であ
る欠点があった。However, when the above-mentioned antenna is shared in the microwave band and the quasi-IJ wave band, for example, there is a drawback that the diameter of the main reflecting mirror and the direction of the radiation beam cannot be selected independently for each frequency band. Furthermore, when attempting to equip the antenna with a tracking pattern for self-tracking in order to obtain the high pointing accuracy mentioned above, the desired tracking pattern cannot be obtained because the mirror surface of the main reflector is modified asymmetrically. However, there was a drawback that it was difficult to provide a high-fi self-tracking function.
本発明は、上記欠点を改良するもので、各周波数帯域ご
とに開口直径およびビームの方向がそれぞれ独立して選
定することができ、かつ高精度の自己追尾機能を具備す
る多周波帯域共用アンテナを提供することを目的とする
。The present invention aims to improve the above-mentioned drawbacks, and provides a multi-frequency band common antenna in which the aperture diameter and beam direction can be independently selected for each frequency band, and which is equipped with a highly accurate self-tracking function. The purpose is to provide.
本発明は、従来の鏡面修整された鏡面の中央部または周
辺部に回転放物面の一部分より成り、前記鏡面修整され
た鏡面の焦点とは異なった焦点を有する鏡面を追加して
１つの主反射鏡を構成し、複数の１次放射器系を用いて
この主反射鏡を照射することにより、所望の放射ビーム
を合成するように構成されたことを特徴とする。The present invention consists of a part of a paraboloid of rotation in the center or the periphery of a conventional mirror surface that has been subjected to mirror finishing, and adds a mirror surface that has a focal point different from the focal point of the mirror surface that has been subjected to mirror finishing to form one main surface. The present invention is characterized in that a desired radiation beam is synthesized by configuring a reflecting mirror and irradiating the main reflecting mirror using a plurality of primary radiator systems.
次に本発明の実施例を図面に基づいて詳しく説明する。 Next, embodiments of the present invention will be described in detail based on the drawings.
第１図は本発明第一実施例アンテナの中央縦断（Ｆｌｌ
１面図、第２図はそのアンテナの主反射鏡の正面図であ
る。第１図および第２図において、主反射鏡１は、回転
放物面の一部分よりなる部分鏡面２．３．４．５が組合
わされて構成される。部分鏡面２．３．４は、点Ｆを焦
点とし各回転放物面の回転中心軸はそれぞれ異なる方向
に配設される。またｇｉｔ分鏡面５は、上記部分鏡面２
．３．４０周辺部に配設され、点Ｆ５を焦点とし軸ｚ５
をその回転中心軸とする。FIG. 1 shows a central longitudinal section (Fll
The first view and FIG. 2 are front views of the main reflecting mirror of the antenna. In FIGS. 1 and 2, the main reflecting mirror 1 is constructed by combining partial mirror surfaces 2.3.4.5 each consisting of a portion of a paraboloid of revolution. The partial mirror surface 2.3.4 has the point F as its focal point, and the rotation center axes of the respective paraboloids of revolution are arranged in different directions. Also, the git mirror surface 5 is the partial mirror surface 2
．． 3.40, with the focus point F5 and the axis z5
Let be its center axis of rotation.
さらに点Ｆには高い周波数帯域、例えば準ミリ波帯の１
次放射器系１０が配設され、点Ｆ５には低い周波数帯域
、例えばマイクロ波帯の１次放射器系１１が配設される
。この１次放射器系１０は主として部分鏡面２．３．４
′ｆｒ、照射し、１次放射器系１１は主反射鏡面ｌ全体
を照射するように構成される。Furthermore, point F has a high frequency band, for example 1 in the sub-millimeter wave band.
A secondary radiator system 10 is disposed, and a primary radiator system 11 for a low frequency band, for example a microwave band, is disposed at point F5. This primary radiator system 10 mainly consists of a partially mirrored surface 2.3.4
'fr, and the primary radiator system 11 is configured to irradiate the entire main reflecting mirror surface l.
上記部分反射鏡２．３．４は高い周波数帯域で、第３図
の破線３０で示すような観測球面上の等利得線図となる
よう罠各部分鏡面の大きさおよび回転中心軸の向きが定
められる。すなわち、１次放射器系ｌＯより放射された
球面波波源は、部分鏡面２．３．４で反射した後、部分
鏡面２．３．４の各回転中心軸方向に進行し、部分鏡面
２．３．４の各形状に準じた拡がりを持つ平面波群とし
て放射され、この平面波群により第３図の破線３０のよ
うないわゆる成形ビームが合成できる。第６図に示す点
Ｐは、第１図の基準軸２と観測球面との交点であり、縦
軸４０は垂直角度、横軸４１は水平角度をそｔぞれ示す
軸である。The partial reflecting mirror 2.3.4 has a high frequency band, and the size of each partial mirror surface and the direction of the center axis of rotation are adjusted so as to form an equal gain diagram on the observation sphere as shown by the broken line 30 in Fig. 3. determined. That is, the spherical wave source emitted from the primary radiator system IO is reflected by the partial mirror surface 2.3.4, and then travels in the direction of each rotation center axis of the partial mirror surface 2.3.4, and then passes through the partial mirror surface 2.3.4. 3.4 is radiated as a group of plane waves having a spread according to each shape, and a so-called shaped beam as shown by the broken line 30 in FIG. 3 can be synthesized by this group of plane waves. A point P shown in FIG. 6 is the intersection of the reference axis 2 in FIG. 1 and the observation sphere, the vertical axis 40 represents the vertical angle, and the horizontal axis 41 represents the horizontal angle.
一方、前記した部分鏡面２．３．４の組合わせによる鏡
面修整は、準ミリ波帯で行われ、しかも破線３０で示す
等利得線の照射する角度範囲も小さいため、例えば自由
空間波長で約５倍の長さを有・するマイクロ波帯では鏡
面修整の効果はほとんどない。このためマイクロ波帯で
は部分鏡面２．３．４０組合わせによる鏡面は、概略点
Ｆを焦点とし、Ｚ！ＩＩＩを回転中心軸とする回転放物
面鏡とみなすことができる。On the other hand, the mirror surface modification by the above-described combination of partial mirror surfaces 2.3.4 is performed in the quasi-millimeter wave band, and the angular range illuminated by the equal gain line shown by the broken line 30 is also small, so for example, the free space wavelength is approximately In the microwave band, which has a length five times as long, there is almost no effect of mirror polishing. Therefore, in the microwave band, the mirror surface formed by the combination of partial mirror surfaces 2.3.40 has a focal point approximately at point F, and Z! It can be regarded as a rotating parabolic mirror with III as the central axis of rotation.
したがってマイクロ波帯の１次放射器系１１より放射さ
れた球面波波源のうち、部分鏡−面２．３．４で反射さ
れた電波は、第１図の破線２０でその通路を示すように
２軸より下向きに進行するほぼ平面波状の電波として放
射され、その最大放射方向は例えば第３図の点Ｐ′で示
すように点Ｐより下側に位置する。Therefore, among the spherical wave sources emitted from the primary radiator system 11 in the microwave band, the radio waves reflected by the partial mirror surface 2.3.4 pass along the path indicated by the broken line 20 in FIG. It is radiated as a substantially plane wave-like radio wave that travels downward from the two axes, and its maximum radiation direction is located below point P, for example, as shown by point P' in FIG.
一方マイクロ波帯の１次放射器系１１より放射された球
面波波源のうち、部分鏡面５で反射された電波は、第１
図の破線２１でその通路を示すようにその回転中心軸ｚ
５方向に進行する平面波とじて放射され、その最大放射
方向は軸ｚ５と観測球面との交点Ｐ５の方向となる。全
体としては前記２つの平面波の重合わせとして第３図の
実線３１で示すような等利得線図となる。On the other hand, among the spherical wave sources emitted from the primary radiator system 11 in the microwave band, the radio waves reflected by the partial mirror surface 5 are
The center axis of rotation z is indicated by the broken line 21 in the figure.
It is radiated as a plane wave traveling in five directions, and its maximum radiation direction is the direction of the intersection P5 between the axis z5 and the observation sphere. As a whole, the superposition of the two plane waves results in an equal gain diagram as shown by the solid line 31 in FIG. 3.
なお、第６図の等利得線図に示す破線３ｏは、自由空間
波長が１ｃｒｎ８．度、部分鏡面２．３．４の組合わぜ
による鏡面の開口直径が約１ｍ、利得３６ｄＢ程度を推
定し、実線３１は、自由空間波長が約１０ｃｒｎ強で主
反射鏡１全体の開口直径が約２ｍ。Note that the broken line 3o shown in the equal gain diagram of FIG. 6 indicates that the free space wavelength is 1 crn8. The aperture diameter of the mirror surface due to the combination of the partial mirror surface 2.3.4 is estimated to be approximately 1 m, and the gain is approximately 36 dB. Approximately 2m.
利得２７ｄＢ程度を推定したものである。また部分鏡面
５の準ミリ波帯の等利得線図への影響は１次放射器系１
０の放射ビームが部分鏡面２．３．４の絹合わせによる
鏡面部分以外では十分減衰するようにすることにより、
無視できるまで小さくすることができる。This is an estimate of a gain of about 27 dB. In addition, the influence of the partial mirror surface 5 on the equal gain diagram of the quasi-millimeter wave band is that the primary radiator system 1
By making sure that the radiation beam of 0 is sufficiently attenuated in areas other than the mirror surface area due to the silk alignment of partial mirror surface 2.3.4,
It can be made small enough to be ignored.
これにより、準ミリ波帯とマイクロ波帯とで独立に開口
直径が選定でき、かつビームの方向もほぼ独立に選定可
能な多周波数帯域共用のアンテナが実現できる。This makes it possible to realize an antenna that can be used in multiple frequency bands, in which the aperture diameter can be selected independently for the quasi-millimeter wave band and the microwave band, and the beam direction can also be selected almost independently.
第４図は本発明第二実施例アンテナの中央縦断側面図、
第５図はそのアンテナの主反射鏡の正面図である。第４
図および第５図において、主反射鏡１は、第一実施例と
同様に回転放物面の一部分よりなる部分鏡面２．３．４
．５が組合わされて構成され、部分鏡面２．３．４は点
Ｆを焦点とし各回転放物面の回転中心軸はそれぞれ異な
る方向に配設され、また部分鏡面５は点Ｆ５を焦点とし
軸Ｚ５ｉその回転中心軸とするが、本実施例の特徴ある
構成は、上記部分鏡面５が上記部分鏡面２．３．４の中
央部に配設され、その焦点である声Ｆ５が点Ｆより主反
射鏡１に近い位置に配置されるところにある。FIG. 4 is a central vertical sectional side view of the antenna according to the second embodiment of the present invention;
FIG. 5 is a front view of the main reflecting mirror of the antenna. Fourth
In the figures and FIG. 5, the main reflecting mirror 1 has a partial mirror surface 2.3.4 formed of a part of a paraboloid of revolution, as in the first embodiment.
．． 5 are combined, and the partial mirror surface 2.3.4 has a point F as its focal point, and the rotation center axis of each paraboloid of revolution is arranged in a different direction, and the partial mirror surface 5 has a point F5 as its focal point and its axis of rotation is arranged in a different direction. The central axis of rotation is Z5i, and the characteristic configuration of this embodiment is that the partial mirror surface 5 is arranged in the center of the partial mirror surface 2.3.4, and the voice F5, which is the focal point, is centered from the point F. It is located near the reflecting mirror 1.
さらに点Ｆには準ミリ波帯とマイクロ波帯を共用する１
次放射器系１２が配設される。この１次放射器１２は主
反射鏡１全体を照射する。また点Ｆ５には準ミリ波帯の
自己追尾用の１次放射器系１３が配設される。この１次
放射器１３は部分鏡面５を照射するように構成される。Furthermore, at point F, there is 1 that shares the quasi-millimeter wave band and the microwave band.
A secondary radiator system 12 is provided. This primary radiator 12 irradiates the entire main reflecting mirror 1 . Further, a primary radiator system 13 for self-tracking in the quasi-millimeter wave band is arranged at point F5. This primary radiator 13 is configured to illuminate the partial mirror surface 5 .
上記部分鏡面５は観測球面上の所望の位置にトラッキン
グパターンが合成できるようにその開口直径と回転中心
軸が定められる。すなわち第６図に示すように、和信号
が実線３５、差信号が４つの破線３４、垂直方向の零細
が実線３６、水平方向の零細が実線３７、零点が２５軸
と観測球面との交点Ｐ５の自己追尾用の等利得線図が得
られる。The aperture diameter and center axis of rotation of the partial mirror surface 5 are determined so that a tracking pattern can be synthesized at a desired position on the observation sphere. That is, as shown in FIG. 6, the sum signal is a solid line 35, the difference signal is a solid line 34, the vertical zero is a solid line 36, the horizontal zero is a solid line 37, and the zero point is 25. The intersection point P5 of the axis and the observation sphere An equal gain diagram for self-tracking is obtained.
また上記部分反射＠２．３．４は準ミリ波帯では、部分
鏡面５の影響も含めて、第６図の破線３２で示すような
観測球面上での等利得線図となるように、各部分鏡面の
大きさおよび回転中心軸の向きが定められる。すなわち
、１次放射器系１２より放射された準ミリ波帯の球面波
波源は、部分鏡面２．３．４で反射した後、各部分鏡面
２．３．４の各回転中心軸方向に進行し、部分鏡面２．
３．４の各形状に準じた拡がりｔ持つ平面波群として放
射される。また１次放射器１２より放射された準ミＩＪ
波帯の球面波波源のうち、部分鏡面５で反射された電波
は、点Ｆが点Ｆ５より偏位しているため、第４図の破線
２２でその通路を示すようにｚ５軸より下向きに進行す
るほぼ平面波状の電波として放射される。以上４つの平
面波群により第６図の破線３２に示すようないわゆる成
形ビームが合成できる。In addition, in the quasi-millimeter wave band, the partial reflection @2.3.4 becomes an equal gain diagram on the observation sphere as shown by the broken line 32 in FIG. 6, including the influence of the partial mirror surface 5. The size of each partial mirror surface and the direction of the central axis of rotation are determined. That is, the quasi-millimeter wave band spherical wave source emitted from the primary radiator system 12 is reflected by the partial mirror surface 2.3.4, and then advances in the direction of each rotation center axis of each partial mirror surface 2.3.4. Partial mirror surface 2.
It is radiated as a group of plane waves with a spread t according to each shape in 3.4. In addition, quasi-IJ emitted from the primary radiator 12
Among the spherical wave sources in the wave band, the radio waves reflected by the partial mirror surface 5 are directed downward from the z5 axis as shown by the broken line 22 in FIG. It is emitted as a traveling almost plane wave radio wave. A so-called shaped beam as shown by the broken line 32 in FIG. 6 can be synthesized using the above four plane wave groups.
一方マイクロ波帯においては、第１図の実施例でも説明
したように部分鏡面２．３．４０組合わせによる鏡面は
、概略点Ｆを焦点とし、Ｚ軸を回転中心軸とする回転放
物面鏡とみなすことができるため、１次放射器系１２よ
り放射された球面波波源は、第４図の破線２３でその通
路を示すように２軸方向に進行するほぼ平面波状の電波
として放射される。On the other hand, in the microwave band, as explained in the example of FIG. Since it can be regarded as a mirror, the spherical wave source emitted from the primary radiator system 12 is emitted as a nearly plane wave-like radio wave that travels in two axial directions, as shown by the broken line 23 in FIG. Ru.
また部分鏡面５で反射された電波は、前記した準ミリ波
帯の場合と同様に、第４図の破線２２でその通路を示す
ようにｚ５軸より下向きに進行するほぼ平面波状の電波
として放射される。全体として、マイクロ波帯の観測球
面上での等利得線図は第６図の実線３３で示すようなほ
ぼ円形の等利得線図となる。Furthermore, the radio waves reflected by the partial mirror surface 5 are radiated as substantially plane wave-like radio waves that travel downward from the z5 axis, as shown by the broken line 22 in FIG. be done. As a whole, the equal gain diagram of the microwave band on the observation sphere becomes a substantially circular equal gain diagram as shown by the solid line 33 in FIG.
したがって、通信用信号と自己追尾用信号のビームをほ
ぼ独立に選定することができ、例えば衛星搭載用のアン
テナに用いた場合には、自己追尾用の地上局の設置位置
が自由に選定できる利点がある。Therefore, the beams for the communication signal and the self-tracking signal can be selected almost independently.For example, when used in a satellite-mounted antenna, the advantage is that the installation position of the self-tracking ground station can be freely selected. There is.
なお、以上の説明では自己追尾用の１次放射器系として
ｔま４ホアンより構成される放射器系を用いたが、他の
方法例えば高次姿態を用いる方法も適用することができ
る。Note that in the above description, a radiator system composed of a t-4 hoan was used as the primary radiator system for self-tracking, but other methods such as a method using a higher-order configuration can also be applied.
また、以上の説明では部分鏡面が４つの場合について説
明したが、部分鏡面の数が５個以上の場合にも適用する
ことができる。Further, in the above description, the case where there are four partial mirror surfaces has been described, but the present invention can also be applied to a case where the number of partial mirror surfaces is five or more.
さらに、説明の都合上、アンテナは送信アンテナとして
扱ったが、アンテナの相反性より受信アンテナにも適用
することができる。したがって上記説明で用いた「照射
」および「放射」の語は、本発明を送（，４アンテナに
限定するものではない。Further, for convenience of explanation, the antenna is treated as a transmitting antenna, but due to the reciprocity of the antenna, it can also be applied to a receiving antenna. Therefore, the terms "irradiation" and "radiation" used in the above description do not limit the present invention to four antennas.
以上説明したように、本発明によれば焦点を共有し回転
中心軸の向きの異なる複数の部分鏡面をｉ：［１合わせ
て成る鏡面の中央部または周辺部に前記共通の焦点とは
異なる位置に焦点を有する部分鏡面ｋ ｉｌ１合わせて
主反射鏡を構成し、前記各焦点位置にそれぞれ１次放射
器系を配設することにより、各１次放射器系に対応して
ほぼ独立のビームを合成でき、各周波数帯域ごとに開口
直径およびビームの方向をそれぞれ独立して選定するこ
とができる優れた効果がある。例えばアンテナ全体の寸
法に制限があり、かつ多周波数帯域を用いることの多い
衛星搭載用アンテナに用いれば多大な効果を発揮するこ
とができる。As explained above, according to the present invention, a plurality of partial mirror surfaces that share a focal point and have different directions of rotation center axes are placed at a position different from the common focal point in the center or peripheral portion of the mirror surface formed by i: [1]. A main reflecting mirror is formed by combining the partial mirror surface k il1 having a focal point, and by arranging a primary radiator system at each focal position, almost independent beams are generated corresponding to each primary radiator system. There is an excellent effect in that the aperture diameter and beam direction can be independently selected for each frequency band. For example, if used in a satellite-mounted antenna that has limitations on the overall size of the antenna and often uses multiple frequency bands, great effects can be achieved.
第１図は本発明第一実施例アンテナの中央縦断側面図。
第２図はその主反射鏡の正面図。
第３図は本発明第一実施例アンテナの放射特性図。
第４図は本発明第二実施例アンテナの中央縦断側面図。
第５図はその主反射鏡の正面図。
第６図は本発明第二実施例アンテナの放射特性図。
ｌ・・・主反射鏡、２．３．４．５・・・部分鏡面、１
０、１．１．１２．１３・・・１次放射器系。
詩作出願人
代理人弁理士 井 出 直 孝
第４図
第５図
第６図FIG. 1 is a central vertical sectional side view of an antenna according to a first embodiment of the present invention. Figure 2 is a front view of the main reflecting mirror. FIG. 3 is a radiation characteristic diagram of the antenna according to the first embodiment of the present invention. FIG. 4 is a central vertical sectional side view of the antenna according to the second embodiment of the present invention. Figure 5 is a front view of the main reflecting mirror. FIG. 6 is a radiation characteristic diagram of the antenna according to the second embodiment of the present invention. l... Main reflecting mirror, 2.3.4.5... Partial mirror surface, 1
0, 1.1.12.13...Primary radiator system. Nao Takashi Ide, patent attorney representing the poetry applicant Figure 4 Figure 5 Figure 6
Claims (1)
個以上の副反射鏡を介して照射する複数の１次放射器系
とを備え、上記各１次放射器系ごとに各別に送受信ビー
ムが得られるように構成された多周波帯域共用アンテナ
において、上記主反射鏡は、回転放物面の一部分よりな
る複数の部分鏡面が組合わされてなる４１？を造であっ
て、この複数の部分鏡面は、少なくとも２個以上の部分
鏡面群とこの２個以上の部分鏡面群の中央部または周辺
部に配設された１個の部分値１面とＫより構成され、上
記２個以上の部分鏡面群は、共通の焦点を有しかつ各回
転放物面の回転中心軸がそれぞれ異なる方向に配設され
、上記１個の部分鏡面は、上記焦点と異なる位買にその
焦点を置くように配設され、上記複数の１次放射器系の
うち第一の１次放射器系は、上記２個以上の部分鏡面群
の共通の焦点位置に配設され、上記複数の１次放射器系
のうち第二の１次放射器系は、上記１個の部分鏡面の焦
点位置に配設されたことを特徴とする多周波帯域共用ア
ンテナっ(1) 1 main reflecting mirror and 1 main reflecting mirror directly or 1 main reflecting mirror.
A multi-frequency band shared antenna is provided with a plurality of primary radiator systems that emit radiation through at least one sub-reflector, and is configured so that a transmission and reception beam can be obtained separately for each of the primary radiator systems, The main reflecting mirror is a combination of a plurality of partial mirror surfaces each formed by a portion of a paraboloid of revolution 41? The plurality of partial mirror surfaces include at least two or more partial mirror surfaces, one partial value 1 surface disposed at the center or periphery of the two or more partial mirror surfaces, and K. The two or more partial mirror surfaces have a common focal point, and the rotation center axes of the respective paraboloids of revolution are arranged in different directions, and the one partial mirror surface has a common focal point and The first primary radiator system of the plurality of primary radiator systems is placed at a common focal point of the two or more partial mirror groups. and a second primary radiator system among the plurality of primary radiator systems is disposed at a focal position of the one partial mirror surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58110698A JPH0654843B2 (en) | 1983-06-20 | 1983-06-20 | Multi-frequency band shared antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58110698A JPH0654843B2 (en) | 1983-06-20 | 1983-06-20 | Multi-frequency band shared antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS603210A true JPS603210A (en) | 1985-01-09 |
| JPH0654843B2 JPH0654843B2 (en) | 1994-07-20 |
Family
ID=14542181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58110698A Expired - Lifetime JPH0654843B2 (en) | 1983-06-20 | 1983-06-20 | Multi-frequency band shared antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0654843B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2595874A1 (en) * | 1986-03-13 | 1987-09-18 | Boeing Co | DUAL MODE SIGNAL SEPARATOR |
| JPS63124109A (en) * | 1986-11-13 | 1988-05-27 | Omron Tateisi Electronics Co | Program setting and inputting device for control equipment |
| US5136294A (en) * | 1987-01-12 | 1992-08-04 | Nec Corporation | Multibeam antenna |
| JPH05152834A (en) * | 1991-11-29 | 1993-06-18 | Nec Corp | Mirror surface correction antenna |
| US5258767A (en) * | 1989-03-14 | 1993-11-02 | Kokusai Denshin Denwa Co., Ltd. | Antenna system for shaped beam |
| US5309167A (en) * | 1989-10-31 | 1994-05-03 | Thomson-Lgt Laboratoire General Des Telecommunications | Multifocal receiving antenna with a single aiming direction for several satellites |
| JPH06152232A (en) * | 1992-11-06 | 1994-05-31 | Fujitsu General Ltd | Parabolic antenna |
| JP2012050074A (en) * | 2010-07-27 | 2012-03-08 | Maspro Denkoh Corp | Antenna device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5099060A (en) * | 1973-12-27 | 1975-08-06 | ||
| JPS5781706A (en) * | 1980-11-11 | 1982-05-21 | Nippon Telegr & Teleph Corp <Ntt> | Multifrequency shared antenna |
-
1983
- 1983-06-20 JP JP58110698A patent/JPH0654843B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5099060A (en) * | 1973-12-27 | 1975-08-06 | ||
| JPS5781706A (en) * | 1980-11-11 | 1982-05-21 | Nippon Telegr & Teleph Corp <Ntt> | Multifrequency shared antenna |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2595874A1 (en) * | 1986-03-13 | 1987-09-18 | Boeing Co | DUAL MODE SIGNAL SEPARATOR |
| JPS63124109A (en) * | 1986-11-13 | 1988-05-27 | Omron Tateisi Electronics Co | Program setting and inputting device for control equipment |
| US5136294A (en) * | 1987-01-12 | 1992-08-04 | Nec Corporation | Multibeam antenna |
| US5258767A (en) * | 1989-03-14 | 1993-11-02 | Kokusai Denshin Denwa Co., Ltd. | Antenna system for shaped beam |
| US5309167A (en) * | 1989-10-31 | 1994-05-03 | Thomson-Lgt Laboratoire General Des Telecommunications | Multifocal receiving antenna with a single aiming direction for several satellites |
| JPH05152834A (en) * | 1991-11-29 | 1993-06-18 | Nec Corp | Mirror surface correction antenna |
| JPH06152232A (en) * | 1992-11-06 | 1994-05-31 | Fujitsu General Ltd | Parabolic antenna |
| JP2012050074A (en) * | 2010-07-27 | 2012-03-08 | Maspro Denkoh Corp | Antenna device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0654843B2 (en) | 1994-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2380802C1 (en) | Compact multibeam mirror antenna | |
| US4342036A (en) | Multiple frequency band, multiple beam microwave antenna system | |
| US4145695A (en) | Launcher reflectors for correcting for astigmatism in off-axis fed reflector antennas | |
| US3852763A (en) | Torus-type antenna having a conical scan capability | |
| US3797020A (en) | Microwave antenna structure with aperture blocking elimination | |
| US4250508A (en) | Scanning beam antenna arrangement | |
| US4144535A (en) | Method and apparatus for substantially reducing cross polarized radiation in offset reflector antennas | |
| US6184838B1 (en) | Antenna configuration for low and medium earth orbit satellites | |
| JPS603210A (en) | Antenna in common use for multi-frequency band | |
| JP2000216625A (en) | Compact side-feed type dual reflector antenna system for providing adjacent high gain antenna beam | |
| US4491848A (en) | Substantially frequency-independent aberration correcting antenna arrangement | |
| Veruttipong et al. | Design considerations for beamwaveguide in the NASA deep space network | |
| US4591864A (en) | Frequency independent twisted wave front constant beamwidth lens antenna | |
| JPH0566763B2 (en) | ||
| GB2262387A (en) | Multibeam antenna | |
| RU2664751C1 (en) | Multi-beam range two-mirror antenna with irradiated radiation | |
| US4631545A (en) | Antenna arrangement capable of astigmatism correction | |
| US5075692A (en) | Antenna system | |
| RU2664870C1 (en) | Non-inclined multiple multi-beam band double-reflector antenna | |
| JP3034262B2 (en) | Aperture antenna device | |
| JPH07101813B2 (en) | Antenna device | |
| JPS6150528B2 (en) | ||
| US10601143B2 (en) | Antenna apparatus | |
| JPH0611086B2 (en) | Molded beam antenna | |
| JPH0295003A (en) | Scanning antenna |