CH623171A5 - - Google Patents
Download PDFInfo
- Publication number
- CH623171A5 CH623171A5 CH324778A CH324778A CH623171A5 CH 623171 A5 CH623171 A5 CH 623171A5 CH 324778 A CH324778 A CH 324778A CH 324778 A CH324778 A CH 324778A CH 623171 A5 CH623171 A5 CH 623171A5
- Authority
- CH
- Switzerland
- Prior art keywords
- reflector
- antenna structure
- structure according
- auxiliary
- primary source
- Prior art date
Links
- 238000005286 illumination Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims 1
- 230000010287 polarization Effects 0.000 description 15
- 230000005855 radiation Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005388 cross polarization Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000002592 echocardiography Methods 0.000 description 2
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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
- H01Q19/192—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 dual offset reflectors
Landscapes
- Aerials With Secondary Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7709000A FR2385233A1 (fr) | 1977-03-25 | 1977-03-25 | Structure d'antenne a reflecteurs et notamment a reflecteurs excentres, et equipements de detection electromagnetique et de telecommunications spatiales comportant une telle structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH623171A5 true CH623171A5 (pm) | 1981-05-15 |
Family
ID=9188593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH324778A CH623171A5 (pm) | 1977-03-25 | 1978-03-23 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4223316A (pm) |
| CH (1) | CH623171A5 (pm) |
| DE (1) | DE2812903C2 (pm) |
| FR (1) | FR2385233A1 (pm) |
| GB (1) | GB1600163A (pm) |
| IT (1) | IT1156177B (pm) |
| NL (1) | NL7803081A (pm) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4425566A (en) | 1981-08-31 | 1984-01-10 | Bell Telephone Laboratories, Incorporated | Antenna arrangement for providing a frequency independent field distribution with a small feedhorn |
| US4439773A (en) * | 1982-01-11 | 1984-03-27 | Bell Telephone Laboratories, Incorporated | Compact scanning beam antenna feed arrangement |
| US4516130A (en) * | 1982-03-09 | 1985-05-07 | At&T Bell Laboratories | Antenna arrangements using focal plane filtering for reducing sidelobes |
| DE3209513A1 (de) * | 1982-03-16 | 1984-02-09 | ANT Nachrichtentechnik GmbH, 7150 Backnang | Exzentrische parabolantenne mit geringer kreuzpolarisation |
| US4755826A (en) * | 1983-01-10 | 1988-07-05 | The United States Of America As Represented By The Secretary Of The Navy | Bicollimated offset Gregorian dual reflector antenna system |
| 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 |
| FR2577074B1 (fr) * | 1985-02-05 | 1987-06-26 | Europ Agence Spatiale | Antenne multireflecteur a faisceau conforme |
| DE3516811C2 (de) * | 1985-05-10 | 1987-03-12 | Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn | Geostationärer Nachrichtensatellit |
| US4791430A (en) * | 1986-06-12 | 1988-12-13 | Agtronics Pty. Limited | Ultrasonic antenna |
| US5546097A (en) * | 1992-12-22 | 1996-08-13 | Hughes Aircraft Company | Shaped dual reflector antenna system for generating a plurality of beam coverages |
| US6233479B1 (en) * | 1998-09-15 | 2001-05-15 | The Regents Of The University Of California | Microwave hematoma detector |
| FR2812457B1 (fr) | 2000-07-28 | 2004-05-28 | Thomson Csf | Reflecteur hyperfrequence actif a bi-polarisation, notamment pour antenne a balalyage electronique |
| JP2003332838A (ja) * | 2002-05-17 | 2003-11-21 | Mitsubishi Electric Corp | マルチビームアンテナ装置 |
| US7183990B2 (en) * | 2004-02-04 | 2007-02-27 | Ems Technologies Canada Ltd | Aperture illumination control membrane |
| US8786508B1 (en) * | 2012-09-27 | 2014-07-22 | L-3 Communications Corp. | Tri-band feed horn |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2975419A (en) * | 1959-10-13 | 1961-03-14 | Newell H Brown | Microwave antenna reflector system for scanning by displacement of focal image |
| US3029431A (en) * | 1960-06-30 | 1962-04-10 | Sperry Rand Corp | Broadband selective polarization antenna system |
| FR1368820A (fr) * | 1963-06-14 | 1964-08-07 | Csf | Aérien de hautes performances |
| US3562753A (en) * | 1968-02-23 | 1971-02-09 | Hitachi Ltd | Casseyrain antenna system with rotatable main reflector for scanning |
| JPS5331345B2 (pm) * | 1972-09-22 | 1978-09-01 | ||
| US3995275A (en) * | 1973-07-12 | 1976-11-30 | Mitsubishi Denki Kabushiki Kaisha | Reflector antenna having main and subreflector of diverse curvature |
| US4062018A (en) * | 1973-12-21 | 1977-12-06 | Kokusai Denshin Denwa Kabushiki Kaisha | Scanning antenna with moveable beam waveguide feed and defocusing adjustment |
| DE2505375A1 (de) * | 1975-02-08 | 1976-08-19 | Licentia Gmbh | Antennensystem bestehend aus einem parabolspiegel und einem erreger |
| US3936837A (en) * | 1975-02-25 | 1976-02-03 | The United States Of America As Represented By The Secretary Of The Navy | Corrugated horn fed offset paraboloidal reflector |
| FR2304192A1 (fr) * | 1975-03-14 | 1976-10-08 | Thomson Csf | Antenne a reduction selective de gain |
-
1977
- 1977-03-25 FR FR7709000A patent/FR2385233A1/fr active Granted
-
1978
- 1978-03-22 NL NL7803081A patent/NL7803081A/xx not_active Application Discontinuation
- 1978-03-23 GB GB11813/78A patent/GB1600163A/en not_active Expired
- 1978-03-23 DE DE2812903A patent/DE2812903C2/de not_active Expired
- 1978-03-23 US US05/889,564 patent/US4223316A/en not_active Expired - Lifetime
- 1978-03-23 CH CH324778A patent/CH623171A5/fr not_active IP Right Cessation
- 1978-03-24 IT IT48588/78A patent/IT1156177B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| DE2812903A1 (de) | 1978-10-05 |
| GB1600163A (en) | 1981-10-14 |
| DE2812903C2 (de) | 1986-01-09 |
| IT7848588A0 (it) | 1978-03-24 |
| NL7803081A (nl) | 1978-09-27 |
| IT1156177B (it) | 1987-01-28 |
| FR2385233A1 (fr) | 1978-10-20 |
| US4223316A (en) | 1980-09-16 |
| FR2385233B1 (pm) | 1983-01-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CH623171A5 (pm) | ||
| EP1445829B1 (fr) | Réflecteur secondaire pour antenne hyperfréquence de type cassegrain | |
| EP2804259B1 (fr) | Radôme pour une antenne à réflecteur concave | |
| CA2243603C (fr) | Structure rayonnante | |
| EP2079131A1 (fr) | Perfectionnement aux antennes planaires comportant au moins un élément rayonnant de type fente à rayonnnement longitudinal | |
| FR2845829A1 (fr) | Systeme d'antenne a double reflecteur a foyer en forme d'anneau multi bande | |
| EP0006391B1 (fr) | Système d'alimentation périscopique pour antenne bi-gamme | |
| EP3113286B1 (fr) | Formateur de faisceaux quasi-optique a lentille et antenne plane comportant un tel formateur de faisceaux | |
| FR2531817A1 (fr) | Structure d'antenne | |
| FR3069713B1 (fr) | Antenne integrant des lentilles a retard a l'interieur d'un repartiteur a base de diviseurs a guide d'ondes a plaques paralleles | |
| CA2814281C (fr) | Cornet d'antenne a grille corruguee | |
| EP0045254B1 (fr) | Source rayonnante bi-bande compacte fonctionnant dans le domaine des hyperfréquences | |
| FR2814614A1 (fr) | Lentille divergente a dome pour ondes hyperfrequences et antenne comportant une telle lentille | |
| FR2648278A1 (fr) | Antenne a faisceaux commutables | |
| CA1314972C (fr) | Antenne a reflecteur de revolution | |
| FR2684809A1 (fr) | Antenne passive multifaisceaux a reflecteur(s) conforme (s). | |
| EP1472760A1 (fr) | Antenne de reception pour couverture multi-faisceaux | |
| FR2540297A1 (fr) | Antenne micro-onde a deux reflecteurs | |
| FR2466108A1 (fr) | Source primaire cassegrain pour une antenne parabolique | |
| EP2772985A1 (fr) | Système de fixation d'un radôme plan sur le réflecteur concave d'une antenne | |
| FR2909225A1 (fr) | Dispositif d'alimentation d'une antenne a reflecteur | |
| FR2874250A1 (fr) | Agencement de detecteurs de radiation | |
| FR2861899A1 (fr) | Antenne-source constituee par une ouverture rayonnante compo rtant un insert | |
| FR2637130A1 (fr) | Antenne a optique cassegrain a haut rendement | |
| FR2956777A1 (fr) | Antenne a reflecteurs |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased | ||
| PL | Patent ceased |