GB1123951A - Improved two reflector antenna - Google Patents
Improved two reflector antennaInfo
- Publication number
- GB1123951A GB1123951A GB13152/66A GB1315266A GB1123951A GB 1123951 A GB1123951 A GB 1123951A GB 13152/66 A GB13152/66 A GB 13152/66A GB 1315266 A GB1315266 A GB 1315266A GB 1123951 A GB1123951 A GB 1123951A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflectors
- axis
- plane
- reflector
- march
- 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.)
- Expired
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
-
- 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
- H01Q19/195—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 a reflecting surface acts also as a polarisation filter or a polarising device
Landscapes
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
1,123,951. Aerials. CSF-COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. 24 March, 1966 [31 March, 1965], No. 13152/66. Heading H4A. In an aerial system having an axis of symmetry, a primary source 1 is located on the said axis at the common focus of two identically shaped intersecting paraboloidal elements which constitute a reflector 2, so constructed as to reflect or transmit radiation according to its direction of polarization. The radiation from the source 1 is so polarized as to be reflected, and it impinges as two plane wave-fronts on two plane twist-reflectors 3. These reflect them back with their direction of polarization rotated, for example by 90 degrees, so that they pass through the reflector 2 to a double prism 4, which aligns them to form a single wavefront travelling in the direction of the axis. The co-operating reflectors may build up aplanatic systems, and the twist-reflectors 3 may each be of a known kind comprising a metallic surface coated with a resinous dielectric in which is embedded a grid of parallel wires spaced not more than a half-wavelength from the said surface, and inclined at 45 degrees to the incident electric reactors. In another embodiment, the primary source 1 comprises an array of sources, disposed normally to the plane of the figure.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR11338A FR1438482A (en) | 1965-03-31 | 1965-03-31 | Dual reflector antenna without source shadow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1123951A true GB1123951A (en) | 1968-08-14 |
Family
ID=8575289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13152/66A Expired GB1123951A (en) | 1965-03-31 | 1966-03-24 | Improved two reflector antenna |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3430246A (en) |
| DE (1) | DE1516741A1 (en) |
| FR (1) | FR1438482A (en) |
| GB (1) | GB1123951A (en) |
| NL (1) | NL6604261A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2298888A1 (en) * | 1975-01-21 | 1976-08-20 | Comp Generale Electricite | GAS LASER GENERATOR |
| CA1258707A (en) * | 1984-12-26 | 1989-08-22 | Tomozo Ohta | Antenna system |
| US4823143A (en) * | 1988-04-22 | 1989-04-18 | Hughes Aircraft Company | Intersecting shared aperture antenna reflectors |
| DE102013218555A1 (en) * | 2013-07-18 | 2015-01-22 | Rohde & Schwarz Gmbh & Co. Kg | System and method for illuminating and imaging an object |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2736895A (en) * | 1951-02-16 | 1956-02-28 | Elliott Brothers London Ltd | High frequency radio aerials |
-
1965
- 1965-03-31 FR FR11338A patent/FR1438482A/en not_active Expired
-
1966
- 1966-03-23 US US536880A patent/US3430246A/en not_active Expired - Lifetime
- 1966-03-24 GB GB13152/66A patent/GB1123951A/en not_active Expired
- 1966-03-25 DE DE19661516741 patent/DE1516741A1/en active Pending
- 1966-03-31 NL NL6604261A patent/NL6604261A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US3430246A (en) | 1969-02-25 |
| NL6604261A (en) | 1966-10-03 |
| DE1516741A1 (en) | 1969-06-26 |
| FR1438482A (en) | 1966-05-13 |
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