EP2264832A3 - Secondary reflector for a double reflector antenna - Google Patents
Secondary reflector for a double reflector antenna Download PDFInfo
- Publication number
- EP2264832A3 EP2264832A3 EP10164928A EP10164928A EP2264832A3 EP 2264832 A3 EP2264832 A3 EP 2264832A3 EP 10164928 A EP10164928 A EP 10164928A EP 10164928 A EP10164928 A EP 10164928A EP 2264832 A3 EP2264832 A3 EP 2264832A3
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- EP
- European Patent Office
- Prior art keywords
- reflector
- secondary reflector
- radius
- diameter
- double
- 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.)
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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
- H01Q19/193—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 with feed supported subreflector
Landscapes
- Aerials With Secondary Devices (AREA)
- Waveguide Aerials (AREA)
Abstract
La présente invention a pour objet un réflecteur second aire d'antenne à double réflecteur comprenant une première extrémité, ayant un premier diamètre, une seconde extrémité, ayant un second diamètre plus grand que le premier diamètre, une surface interne convexe réfléchissante placée à la seconde extrémité ayant un axe de révolution, une surface externe, de même axe de révolution que la surface interne, reliant la première extrémité à la deuxième extrémité, et un corps diélectrique s'étendant entre la première et la seconde extrémité et limité par la surface interne et la surface externe, dans lequel le corps diélectrique présente au niveau de la première extrémité un renflement formant un cornet ayant une surface externe qui présente un profil continu, dont l'extrémité de diamètre moindre est adaptée pour le couplage à l'extrémité d'un guide d'onde cylindrique et dont la surface externe est réfléchissante. De préférence, le profil de la surface externe du cornet est défini par la relation :
dans laquelle A est une constante numérique, aw est le premier rayon de la première extrémité du réflecteur secondaire, ρ0 est le deuxième rayon de la deuxième extrémité du réflecteur secondaire, L est la hauteur totale du réflecteur secondaire,z est la hauteur considérée du réflecteur secondaire, et ρ(z) est le rayon d'une section placée à la hauteur z du réflecteur secondaire.The subject of the present invention is a second reflector with a double reflector antenna area comprising a first end having a first diameter, a second end having a second diameter larger than the first diameter, a reflective convex inner surface placed at the second end. end having an axis of revolution, an outer surface, of the same axis of revolution as the inner surface, connecting the first end to the second end, and a dielectric body extending between the first and the second end and bounded by the inner surface and the outer surface, wherein the dielectric body has at the first end a bulge forming a horn having an outer surface which has a continuous profile, the smaller diameter end of which is adapted for coupling to the end of a cylindrical waveguide and whose outer surface is reflective. Preferably, the profile of the outer surface of the horn is defined by the relation:
where A is a numerical constant, a w is the first radius of the first end of the secondary reflector, ρ 0 is the second radius of the second end of the secondary reflector, L is the total height of the secondary reflector, z is the height considered. of the secondary reflector, and ρ (z) is the radius of a section placed at the height z of the secondary reflector.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0953694A FR2946466B1 (en) | 2009-06-04 | 2009-06-04 | SECONDARY REFLECTOR FOR A DOUBLE REFLECTOR ANTENNA |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2264832A2 EP2264832A2 (en) | 2010-12-22 |
EP2264832A3 true EP2264832A3 (en) | 2011-01-19 |
EP2264832B1 EP2264832B1 (en) | 2015-08-19 |
Family
ID=41327325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10164928.3A Active EP2264832B1 (en) | 2009-06-04 | 2010-06-04 | Secondary reflector for a double reflector antenna |
Country Status (2)
Country | Link |
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EP (1) | EP2264832B1 (en) |
FR (1) | FR2946466B1 (en) |
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Also Published As
Publication number | Publication date |
---|---|
EP2264832B1 (en) | 2015-08-19 |
FR2946466B1 (en) | 2012-03-30 |
FR2946466A1 (en) | 2010-12-10 |
EP2264832A2 (en) | 2010-12-22 |
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