JPS6128246B2 - - Google Patents
Info
- Publication number
- JPS6128246B2 JPS6128246B2 JP13935979A JP13935979A JPS6128246B2 JP S6128246 B2 JPS6128246 B2 JP S6128246B2 JP 13935979 A JP13935979 A JP 13935979A JP 13935979 A JP13935979 A JP 13935979A JP S6128246 B2 JPS6128246 B2 JP S6128246B2
- Authority
- JP
- Japan
- Prior art keywords
- primary radiation
- electromagnetic horn
- beam antenna
- fan beam
- primary
- 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
Links
- 230000005855 radiation Effects 0.000 claims description 15
- 230000005684 electric field Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 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
Landscapes
- Aerials With Secondary Devices (AREA)
Description
【発明の詳細な説明】
本発明は、垂直偏波用鏡面共用アンテナにおい
て、各々の１次放射特性によつて各入出力端子間
水平面内指向性を制御する扇形ビームアンテナに
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fan-shaped beam antenna that controls directivity in a horizontal plane between input and output terminals according to each primary radiation characteristic in a vertically polarized mirror antenna.
第１図は従来の扇形ビームアンテナを示すもの
で、イは正面図、ロは側面図であり、１は扇形ビ
ームアンテナの反射鏡、２は１次放射器電磁ホー
ンである。この扇形ビームアンテナを自動車無線
電話方式のように多数の無線チヤンネルを必要と
するシステムの基地局用アンテナとすると、この
アンテナの入出力端子は１つであるため共用でき
る無線チヤンネルは限定される。そこで、複数の
１次放射器２１，２２，２３，２４を第２図に示
すように位相中心軸上に設置すれば、実効上１基
のアンテナの入出力端子が増加することになり、
無線チヤネルの共用数が増大する。しかし、１次
放射器２１，２４のように位相中心点から離れた
位置に取り付けると各入出力端子の水平面内指向
性が一様とならない。このため、自動車無線電話
方式のように基地局で指定された周波数によつて
使用する入出力端子が自動的に決定されるシステ
ムで用いたとき、使用する入出力端子の相違によ
りサービスエリアの広がりが異なる欠点がある。 FIG. 1 shows a conventional fan beam antenna, in which A is a front view and B is a side view, 1 is a reflector of the fan beam antenna, and 2 is a primary radiator electromagnetic horn. If this fan-shaped beam antenna is used as a base station antenna for a system that requires a large number of radio channels, such as an automobile radio telephone system, the number of radio channels that can be shared is limited because this antenna has only one input/output terminal. Therefore, if a plurality of primary radiators 21, 22, 23, and 24 are installed on the phase center axis as shown in Fig. 2, the number of input and output terminals of one antenna will effectively increase.
The number of shared wireless channels increases. However, if the primary radiators 21 and 24 are installed at a position away from the phase center point, the directivity in the horizontal plane of each input/output terminal will not be uniform. For this reason, when used in a system where the input/output terminals to be used are automatically determined according to the frequency specified by the base station, such as a car radio telephone system, the service area can be expanded due to the difference in the input/output terminals used. But there are different drawbacks.
本発明は、これらの欠点を除去するために、各
１次放射電磁ホーンの開口面をその１次放射電磁
ホーンの軸に対して傾斜するように構成して、水
平面内指向性が一様になるようにした多群共用扇
形ビームアンテナを提供するものである。 In order to eliminate these drawbacks, the present invention configures the aperture surface of each primary radiation electromagnetic horn to be inclined with respect to the axis of the primary radiation electromagnetic horn, so that the directivity in the horizontal plane is uniform. The present invention provides a multi-group common fan beam antenna that is configured to have the following characteristics.
以下図面により本発明を詳細に説明する。 The present invention will be explained in detail below with reference to the drawings.
第３図は本発明の実施例であつて、１は扇形ビ
ームアンテナ反射鏡、２１，２２，２３，２４は
１次放射電磁ホーンである。また、第４図イは１
次放射電磁ホーンの上面図、ロは１次放射電磁ホ
ーンの放射特性である。 FIG. 3 shows an embodiment of the present invention, in which 1 is a fan-shaped beam antenna reflector, and 21, 22, 23, and 24 are primary radiation electromagnetic horns. Also, Figure 4 A is 1
A top view of the secondary radiation electromagnetic horn, b shows the radiation characteristics of the primary radiation electromagnetic horn.
第４図イのように開口面をその１次放射電磁ホ
ーンの軸に対して傾斜させ、この切り込み角θを
変化させることにより、同図ロのように主ビーム
方向が変化する。従つて、１次放射電磁ホーンの
取り付け位置が異なつた場合に、１次放射器の取
り付け位置に対応した切り込み角を付けることに
より容易に水平面内指向性を各入出力端子間で一
様の特性とすることができる。 By tilting the aperture surface with respect to the axis of the primary radiation electromagnetic horn as shown in FIG. 4A and changing the cutting angle θ, the main beam direction changes as shown in FIG. 4B. Therefore, even if the primary radiating electromagnetic horn is installed at different positions, it is easy to make the directivity in the horizontal plane uniform between the input and output terminals by setting the cutting angle corresponding to the installation position of the primary radiator. It can be done.
以上説明したように、本発明によれば１次放射
器電磁ホーンの開口面をその軸に対して傾斜する
ように構成することにより各入出力端子間の水平
面内指向性を一様にし、同一基地局内でのサービ
スエリアを同一になし得る利点がある。 As explained above, according to the present invention, by configuring the aperture surface of the primary radiator electromagnetic horn to be inclined with respect to its axis, the directivity in the horizontal plane between each input and output terminal is made uniform, and the There is an advantage that the service area within the base station can be made the same.
第１図イ，ロは従来の扇形ビームアンテナの具
体例を示す正面図及び側面図、第２図イ，ロは従
来の多群共用扇形ビームアンテナの具体例を示す
正面図及び上面図、第３図は本発明の実施例を示
す上面図、第４図は本発明に用いる１次放射電磁
ホーンの実施例とその特性図である。
１……扇形ビームアンテナの反射鏡面、２，２
１，２２，２３，２４……１次放射電磁ホーン。
Figures 1A and 2B are front and side views showing a specific example of a conventional fan beam antenna; Figures 2A and 2B are a front view and top view showing a specific example of a conventional multi-group fan beam antenna; FIG. 3 is a top view showing an embodiment of the present invention, and FIG. 4 is an embodiment of a primary radiation electromagnetic horn used in the present invention and its characteristic diagram. 1...Reflecting mirror surface of fan beam antenna, 2, 2
1, 22, 23, 24...Primary radiation electromagnetic horn.
Claims (1)
界軸に対して垂直の位相中心軸上に複数の１次放
射電磁ホーンを取り付けたアンテナにおいて、前
記１次放射電磁ホーンの開口面を該１次放射電磁
ホーンの軸に対して傾斜させるとともに該１次放
射電磁ホーンの取り付け位置に対応した切り込み
角を付けて前記垂直偏波用扇形ビームアンテナ反
射鏡の中心部に指向するように構成することによ
り、水平面内指向性の主放射方向のずれを制御す
るようにしたことを特徴とする多群共用扇形ビー
ムアンテナ。1. In an antenna in which a plurality of primary radiation electromagnetic horns are attached on a phase center axis perpendicular to the electric field axis of a vertically polarized fan beam antenna reflecting mirror surface, the aperture surface of the primary radiation electromagnetic horn is used as the primary radiation By configuring it so that it is tilted with respect to the axis of the electromagnetic horn and has a cut angle corresponding to the mounting position of the primary radiation electromagnetic horn so as to be directed toward the center of the vertically polarized fan beam antenna reflector. A multi-group shared fan beam antenna characterized by controlling the deviation of the main radiation direction of the directivity in the horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13935979A JPS5664504A (en) | 1979-10-30 | 1979-10-30 | Multigroup sharing fan-shaped beam antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13935979A JPS5664504A (en) | 1979-10-30 | 1979-10-30 | Multigroup sharing fan-shaped beam antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5664504A JPS5664504A (en) | 1981-06-01 |
| JPS6128246B2 true JPS6128246B2 (en) | 1986-06-30 |
Family
ID=15243484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13935979A Granted JPS5664504A (en) | 1979-10-30 | 1979-10-30 | Multigroup sharing fan-shaped beam antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5664504A (en) |
-
1979
- 1979-10-30 JP JP13935979A patent/JPS5664504A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5664504A (en) | 1981-06-01 |
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