FR2181959B1 - - Google Patents
Info
- Publication number
- FR2181959B1 FR2181959B1 FR7314589A FR7314589A FR2181959B1 FR 2181959 B1 FR2181959 B1 FR 2181959B1 FR 7314589 A FR7314589 A FR 7314589A FR 7314589 A FR7314589 A FR 7314589A FR 2181959 B1 FR2181959 B1 FR 2181959B1
- Authority
- FR
- France
- 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
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
-
- 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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE05357/72A SE356641B (es) | 1972-04-24 | 1972-04-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2181959A1 FR2181959A1 (es) | 1973-12-07 |
| FR2181959B1 true FR2181959B1 (es) | 1977-02-11 |
Family
ID=20266295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7314589A Expired FR2181959B1 (es) | 1972-04-24 | 1973-04-20 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3820116A (es) |
| CH (1) | CH545542A (es) |
| FR (1) | FR2181959B1 (es) |
| GB (1) | GB1374567A (es) |
| NL (1) | NL178378C (es) |
| SE (1) | SE356641B (es) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2450509A1 (fr) * | 1979-03-02 | 1980-09-26 | Thomson Csf | Dispositif polariseur pour antenne microonde |
| FR2451114A1 (fr) * | 1979-03-09 | 1980-10-03 | Thomson Csf | Antenne a plans paralleles a rotation de polarisation |
| US4343000A (en) * | 1981-04-06 | 1982-08-03 | The United States Of America As Represented By The Secretary Of The Navy | Aircraft self-protection radar |
| US4977407A (en) * | 1981-07-23 | 1990-12-11 | Crane Patrick E | Optical collimator |
| GB2110003B (en) * | 1981-11-19 | 1985-03-13 | Marconi Co Ltd | Antenna assemblies |
| US4574287A (en) * | 1983-03-04 | 1986-03-04 | The United States Of America As Represented By The Secretary Of The Navy | Fixed aperture, rotating feed, beam scanning antenna system |
| FR2557737B1 (fr) * | 1983-12-30 | 1987-12-18 | Thomson Csf | Antenne a deux reflecteurs cylindro-paraboliques croises et son procede de fabrication |
| US5455589A (en) * | 1994-01-07 | 1995-10-03 | Millitech Corporation | Compact microwave and millimeter wave radar |
| US5883602A (en) * | 1996-06-05 | 1999-03-16 | Apti, Inc. | Wideband flat short foci lens antenna |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2907033A (en) * | 1956-10-19 | 1959-09-29 | Gabriel Co | Wave-guide antenna |
| FR1264818A (fr) * | 1959-08-10 | 1961-06-23 | Gen Electric Co Ltd | Perfectionnements apportés aux antennes passives |
| FR1307590A (fr) * | 1960-12-27 | 1962-10-26 | Western Electric Co | Dispositif d'antenne |
| FR1508062A (fr) * | 1965-04-12 | 1968-01-05 | Csf | Antennes aplanétiques |
| GB1179392A (en) * | 1966-01-31 | 1970-01-28 | Mini Of Technology | Improvements in or relating to Horn Aerials |
| GB1181060A (en) * | 1966-01-31 | 1970-02-11 | Mini Of Technology | Improvements in or relating to Horn Aerials |
-
1972
- 1972-04-24 SE SE05357/72A patent/SE356641B/xx unknown
-
1973
- 1973-04-04 US US00347843A patent/US3820116A/en not_active Expired - Lifetime
- 1973-04-19 NL NLAANVRAGE7305576,A patent/NL178378C/xx not_active IP Right Cessation
- 1973-04-19 GB GB1919673A patent/GB1374567A/en not_active Expired
- 1973-04-20 FR FR7314589A patent/FR2181959B1/fr not_active Expired
- 1973-04-24 CH CH581873A patent/CH545542A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB1374567A (en) | 1974-11-20 |
| NL7305576A (es) | 1973-10-26 |
| FR2181959A1 (es) | 1973-12-07 |
| SE356641B (es) | 1973-05-28 |
| US3820116A (en) | 1974-06-25 |
| NL178378B (nl) | 1985-10-01 |
| CH545542A (es) | 1974-01-31 |
| NL178378C (nl) | 1986-03-03 |