FR2448233B1 - - Google Patents
Info
- Publication number
- FR2448233B1 FR2448233B1 FR7902768A FR7902768A FR2448233B1 FR 2448233 B1 FR2448233 B1 FR 2448233B1 FR 7902768 A FR7902768 A FR 7902768A FR 7902768 A FR7902768 A FR 7902768A FR 2448233 B1 FR2448233 B1 FR 2448233B1
- 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
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/01—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the shape of the antenna or antenna system
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/002—Antennas or antenna systems providing at least two radiating patterns providing at least two patterns of different beamwidth; Variable beamwidth antennas
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7902768A FR2448233A1 (fr) | 1979-02-02 | 1979-02-02 | Antenne cassegrain inversee pour radar a fonctions multiples |
| DE8080400037T DE3062089D1 (en) | 1979-02-02 | 1980-01-11 | Reverse cassegrain antenna for multipurpose radar |
| EP80400037A EP0014605B1 (fr) | 1979-02-02 | 1980-01-11 | Antenne Cassegrain inversée pour radar à fonctions multiples |
| US06/116,661 US4253100A (en) | 1979-02-02 | 1980-01-29 | Inverse cassegrain antenna for multiple function radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7902768A FR2448233A1 (fr) | 1979-02-02 | 1979-02-02 | Antenne cassegrain inversee pour radar a fonctions multiples |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2448233A1 FR2448233A1 (fr) | 1980-08-29 |
| FR2448233B1 true FR2448233B1 (US07534539-20090519-C00127.png) | 1983-05-13 |
Family
ID=9221553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7902768A Granted FR2448233A1 (fr) | 1979-02-02 | 1979-02-02 | Antenne cassegrain inversee pour radar a fonctions multiples |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4253100A (US07534539-20090519-C00127.png) |
| EP (1) | EP0014605B1 (US07534539-20090519-C00127.png) |
| DE (1) | DE3062089D1 (US07534539-20090519-C00127.png) |
| FR (1) | FR2448233A1 (US07534539-20090519-C00127.png) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2524720A2 (fr) * | 1982-04-02 | 1983-10-07 | Thomson Csf | Antenne cassegrain inversee pour radar a fonction multiple |
| US4504835A (en) * | 1982-06-15 | 1985-03-12 | The United States Of America As Represented By The Secretary Of The Navy | Low sidelobe, high efficiency mirror antenna with twist reflector |
| 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 |
| GB2277408B (en) * | 1989-05-16 | 1995-03-08 | Plessey Co Plc | Radar |
| US5455589A (en) * | 1994-01-07 | 1995-10-03 | Millitech Corporation | Compact microwave and millimeter wave radar |
| US5469181A (en) * | 1994-03-18 | 1995-11-21 | Celwave | Variable horizontal beamwidth antenna having hingeable side reflectors |
| SE514305C2 (sv) * | 1999-04-22 | 2001-02-05 | Celsiustech Electronics Ab | Metod och anordning för bestämning av ett skanningsläge för en skannande reflektor hos en antennanordning |
| US7564419B1 (en) * | 2006-04-14 | 2009-07-21 | Lockheed Martin Corporation | Wideband composite polarizer and antenna system |
| CN107271796B (zh) * | 2017-05-18 | 2020-04-07 | 陕西长岭电子科技有限责任公司 | 倒卡天线的空域稳定功能测试系统及测试方法 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3092834A (en) * | 1958-12-23 | 1963-06-04 | Canoga Electronics Corp | Split parabolic radar antenna utilizing means to discriminate against crosspolarized energy |
| US3161879A (en) * | 1961-01-05 | 1964-12-15 | Peter W Hannan | Twistreflector |
| US3254342A (en) * | 1963-07-09 | 1966-05-31 | Bell Telephone Labor Inc | Antenna system wherein beamwidth variation is achieved by changing shape of intermediate reflector |
| DE1296221B (de) * | 1965-09-30 | 1969-05-29 | Siemens Ag | Richtantenne, bestehend aus einem ueber einen Fangreflektor ausgeleuchteten Hauptreflektor |
| GB1330175A (en) * | 1970-08-04 | 1973-09-12 | Elliott Brothers London Ltd | Radio aerials |
| US3866233A (en) * | 1973-09-10 | 1975-02-11 | Nasa | Dish antenna having switchable beamwidth |
| FR2394186A1 (fr) * | 1977-06-06 | 1979-01-05 | Thomson Csf | Montage periscopique a lobe principal de largeur variable |
-
1979
- 1979-02-02 FR FR7902768A patent/FR2448233A1/fr active Granted
-
1980
- 1980-01-11 EP EP80400037A patent/EP0014605B1/fr not_active Expired
- 1980-01-11 DE DE8080400037T patent/DE3062089D1/de not_active Expired
- 1980-01-29 US US06/116,661 patent/US4253100A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US4253100A (en) | 1981-02-24 |
| DE3062089D1 (en) | 1983-03-31 |
| FR2448233A1 (fr) | 1980-08-29 |
| EP0014605B1 (fr) | 1983-02-23 |
| EP0014605A1 (fr) | 1980-08-20 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |