JPS643311U - - Google Patents
Info
- Publication number
- JPS643311U JPS643311U JP9674587U JP9674587U JPS643311U JP S643311 U JPS643311 U JP S643311U JP 9674587 U JP9674587 U JP 9674587U JP 9674587 U JP9674587 U JP 9674587U JP S643311 U JPS643311 U JP S643311U
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- power supply
- divided
- antenna groups
- groups
- 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
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Description
第１図は本考案の一実施例の空中線給電装置を
示す回路図、第２図は従来の空中線給電装置を示
す回路図である。
１ａ，１ｂ……主給電線、２ａ，２ｂ……電力
分配器、３ａ，３ｂ……中間ケーブル、４……ジ
ヤンクシヨンボツクス、５……分岐ケーブル、６
……空中線、７ａ，７ｂ……位相切替器、８ａ，
８ｂ……中間ケーブル。
FIG. 1 is a circuit diagram showing an antenna power supply device according to an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional antenna power supply device. 1a, 1b... Main feeder line, 2a, 2b... Power divider, 3a, 3b... Intermediate cable, 4... Junction box, 5... Branch cable, 6
...Antenna, 7a, 7b...Phase switch, 8a,
8b...Intermediate cable.
Claims (1)
し上段と下段の空中線群の給電位相を違えて所定
のビームチルト（θ）を得る上下別２条給電方式
の空中線給電装置において、前記上段空中線群が
給電系に関しＡ及びＢ空中線群に区分してあり、
前記下段空中線群が給電系に関しＡ′及びＢ′空
中線群に区分してあり、前記Ａ又はＢ空中線群の
給電系のいずれか一方に給電路長を切替える手段
が設けてあり、前記Ａ′又はＢ′空中線群の給電
系のいずれか一方に給電路長を切替える手段が設
けてあることを特徴とする空中線給電装置。 In an antenna power supply device of an upper and lower two-line feeding system in which a plurality of antennas are divided into two into upper and lower antenna groups and the feeding phases of the upper and lower antenna groups are different to obtain a predetermined beam tilt (θ), the upper antenna group The power supply system is divided into A and B antenna groups,
The lower antenna group is divided into A' and B' antenna groups in terms of feed systems, and means for switching the feed path length is provided in either of the feed systems of the A or B antenna groups, and the A' or B antenna group is B' An antenna power supply device characterized in that one of the power supply systems of the antenna group is provided with means for switching the length of the power supply path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9674587U JPS643311U (en) | 1987-06-23 | 1987-06-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9674587U JPS643311U (en) | 1987-06-23 | 1987-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS643311U true JPS643311U (en) | 1989-01-10 |
Family
ID=31321831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9674587U Pending JPS643311U (en) | 1987-06-23 | 1987-06-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643311U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4924539A (en) * | 1972-06-28 | 1974-03-05 |
-
1987
- 1987-06-23 JP JP9674587U patent/JPS643311U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4924539A (en) * | 1972-06-28 | 1974-03-05 |
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