JPS5733804A - Reflector antenna - Google Patents
Reflector antennaInfo
- Publication number
- JPS5733804A JPS5733804A JP10865780A JP10865780A JPS5733804A JP S5733804 A JPS5733804 A JP S5733804A JP 10865780 A JP10865780 A JP 10865780A JP 10865780 A JP10865780 A JP 10865780A JP S5733804 A JPS5733804 A JP S5733804A
- Authority
- JP
- Japan
- Prior art keywords
- feed part
- antennas
- phase
- wave angle
- reflector
- 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
- 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
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
PURPOSE:To vary the phase of the radiation electric field of a primary feed part so as to correspond to a variation of a wave angle, and to increase a detection probability of a low wave angle area by improvement of the primary feed part, by setting the relative phase of a secondary pattern by the upper part of a reflector, and a secondary pattern by the lower part, to a suitable value. CONSTITUTION:To a reflector 3 of a dual beam system radar antenna are placed a low beam feed part 1 and a high beam feed part 2 on its upper and lower parts, respectively. A primary feed part to the reflector 3 of said constitution is constituted of horn antennas 12, 13, these antennas 12, 13 are placed in parallel on the upper and lower parts, and the ratio of electric power to be fed to these antennas 12, 13 is varied by an electric power distributor 14, and is made in phase. In accordance with a wave angle theta whose right angle has been made ''0'' to the opening of the antennas 12, 13, the ratio of electric power to be fed to the antenna 12 or 13 is varied by the distributor 14, phase of the radiation electric field of the primary feed part is varied in accordance with a variation of the wave angle theta, and a covered area in the angle area of the low wave angle theta is expanded.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10865780A JPS5733804A (en) | 1980-08-07 | 1980-08-07 | Reflector antenna |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10865780A JPS5733804A (en) | 1980-08-07 | 1980-08-07 | Reflector antenna |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5733804A true JPS5733804A (en) | 1982-02-24 |
Family
ID=14490355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10865780A Pending JPS5733804A (en) | 1980-08-07 | 1980-08-07 | Reflector antenna |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5733804A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0647359A4 (en) * | 1991-08-06 | 1994-08-30 | Int Standard Electric Corp | Asr system for microburst detection. |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4718671U (en) * | 1971-04-06 | 1972-11-01 | ||
JPS5099010A (en) * | 1973-12-27 | 1975-08-06 | ||
JPS50130341A (en) * | 1974-03-21 | 1975-10-15 | ||
JPS5599804A (en) * | 1979-01-24 | 1980-07-30 | Toshiba Corp | Reflection mirror antenna |
-
1980
- 1980-08-07 JP JP10865780A patent/JPS5733804A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4718671U (en) * | 1971-04-06 | 1972-11-01 | ||
JPS5099010A (en) * | 1973-12-27 | 1975-08-06 | ||
JPS50130341A (en) * | 1974-03-21 | 1975-10-15 | ||
JPS5599804A (en) * | 1979-01-24 | 1980-07-30 | Toshiba Corp | Reflection mirror antenna |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0647359A4 (en) * | 1991-08-06 | 1994-08-30 | Int Standard Electric Corp | Asr system for microburst detection. |
EP0647359A1 (en) * | 1991-08-06 | 1995-04-12 | INTERNATIONAL STANDARD ELECTRIC CORPORATION (a Delaware corporation) | Asr system for microburst detection |
US5491489A (en) * | 1991-08-06 | 1996-02-13 | Itt Corporation | ASR system for microburst detection |
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