JPS57180203A - Phase difference feeding antenna - Google Patents
Phase difference feeding antennaInfo
- Publication number
- JPS57180203A JPS57180203A JP6406981A JP6406981A JPS57180203A JP S57180203 A JPS57180203 A JP S57180203A JP 6406981 A JP6406981 A JP 6406981A JP 6406981 A JP6406981 A JP 6406981A JP S57180203 A JPS57180203 A JP S57180203A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- mixing
- mixing circuits
- output
- amount
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/002—Antennas or antenna systems providing at least two radiating patterns providing at least two patterns of different beamwidth; Variable beamwidth antennas
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
PURPOSE:To easily change the directivity, by connecting the 1st and 2nd mixing circuits with a phase delay circuit between a front and rear antenna elements and selecting an output of the mixing circuits with a switching circuit. CONSTITUTION:A phase delay circuit 7 and mixing circuits 4 and 5 are connected between a front antenna element 1 and a rear antenna element 2, and a switching circuit 6 switching the output of the mixing circuits 4 and 5 is provided, and the switching circuit switches the output of the mixing circuits 4 and 5 leading to the feeding section. Further, the sum of the amount of delay by the mixing circuit 5 and the phase delay circuit 7 and the amount of delay due to a distance l1 between the antenna elements 1 and 2 is set as lambda/2 and the sum of the amount of delay with the mixing circuit 4 and the phase delay circuit 7, and the amount of delay due to a distance l1 between the antenna elements 1 and 2 is set also as lambda/2. Thus, the directivity is changed back and forth, by selecting the output of the mixing circuits 4 and 5 with the switching circuit 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6406981A JPS57180203A (en) | 1981-04-30 | 1981-04-30 | Phase difference feeding antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6406981A JPS57180203A (en) | 1981-04-30 | 1981-04-30 | Phase difference feeding antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57180203A true JPS57180203A (en) | 1982-11-06 |
Family
ID=13247427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6406981A Pending JPS57180203A (en) | 1981-04-30 | 1981-04-30 | Phase difference feeding antenna |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57180203A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2004091043A1 (en) * | 2003-04-02 | 2006-07-06 | Ｄｘアンテナ株式会社 | Variable directional antenna and variable directional antenna system using this antenna |
| JP2008167248A (en) * | 2006-12-28 | 2008-07-17 | Dx Antenna Co Ltd | Antenna device |
-
1981
- 1981-04-30 JP JP6406981A patent/JPS57180203A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2004091043A1 (en) * | 2003-04-02 | 2006-07-06 | Ｄｘアンテナ株式会社 | Variable directional antenna and variable directional antenna system using this antenna |
| JP4763456B2 (en) * | 2003-04-02 | 2011-08-31 | Ｄｘアンテナ株式会社 | Variable directional antenna and variable directional antenna system using this antenna |
| JP2008167248A (en) * | 2006-12-28 | 2008-07-17 | Dx Antenna Co Ltd | Antenna device |
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