JPS5465457A - Reflector antenna device - Google Patents
Reflector antenna deviceInfo
- Publication number
- JPS5465457A JPS5465457A JP13194977A JP13194977A JPS5465457A JP S5465457 A JPS5465457 A JP S5465457A JP 13194977 A JP13194977 A JP 13194977A JP 13194977 A JP13194977 A JP 13194977A JP S5465457 A JPS5465457 A JP S5465457A
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- horn
- reflector
- elliptic
- featuring
- 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
- H01Q19/18—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 having two or more spaced reflecting surfaces
- H01Q19/19—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 having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
- H01Q19/191—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 having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface wherein the primary active element uses one or more deflecting surfaces, e.g. beam waveguide feeds
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
PURPOSE:To reduce the performance deterioration such as the gain lowering, the rise of the side lobe and others by forming the hyperboloidal mirror following the feeder horn into an elliptic mirror and also forming the secondary reflector into a special mirror surface respectively. CONSTITUTION:The antenna device consists of the following component parts: feeder horn 1; main reflector 4; non-rotary and symmetric elliptic surface mirror 6 featuring focal points F1 and F1''; rotary and symmetric secondary reflector 7 featuring an elliptic mirror surface of center part focal points F1'' and Fm plus a special mirror surface at the circumference part; equivalent horn 8 which features an image regarding mirror 6 of horn 1, and other parts. The electric wave emitted from point F1 is a stopped-down beam going toward point F1'' in terms of the photo-geometry. In this case, if design parameter t is set to a smaller value than 0.4, aperture diameter D1 of horn 1 can be reduced to decrease the leak power of mirror 6 even though the size D2 of 6 is small. As for the waves of the low frequency band, peripheral regions S1, S2, S1' and S2' are required in order to receive the waves up to a sufficiently low level through reflector 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13194977A JPS5465457A (en) | 1977-11-02 | 1977-11-02 | Reflector antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13194977A JPS5465457A (en) | 1977-11-02 | 1977-11-02 | Reflector antenna device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5465457A true JPS5465457A (en) | 1979-05-26 |
Family
ID=15069968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13194977A Pending JPS5465457A (en) | 1977-11-02 | 1977-11-02 | Reflector antenna device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5465457A (en) |
-
1977
- 1977-11-02 JP JP13194977A patent/JPS5465457A/en active Pending
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