FR2721757B1 - Antenne omnidirectionnelle en azimut et directive en site et répondeur maritime ainsi équipé. - Google Patents
Antenne omnidirectionnelle en azimut et directive en site et répondeur maritime ainsi équipé.Info
- Publication number
- FR2721757B1 FR2721757B1 FR9407944A FR9407944A FR2721757B1 FR 2721757 B1 FR2721757 B1 FR 2721757B1 FR 9407944 A FR9407944 A FR 9407944A FR 9407944 A FR9407944 A FR 9407944A FR 2721757 B1 FR2721757 B1 FR 2721757B1
- Authority
- FR
- France
- Prior art keywords
- maritime
- responder
- directive
- azimuth
- site
- 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 - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
- H01Q21/205—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path providing an omnidirectional coverage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9407944A FR2721757B1 (fr) | 1994-06-28 | 1994-06-28 | Antenne omnidirectionnelle en azimut et directive en site et répondeur maritime ainsi équipé. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9407944A FR2721757B1 (fr) | 1994-06-28 | 1994-06-28 | Antenne omnidirectionnelle en azimut et directive en site et répondeur maritime ainsi équipé. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2721757A1 FR2721757A1 (fr) | 1995-12-29 |
FR2721757B1 true FR2721757B1 (fr) | 1996-09-13 |
Family
ID=9464736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9407944A Expired - Fee Related FR2721757B1 (fr) | 1994-06-28 | 1994-06-28 | Antenne omnidirectionnelle en azimut et directive en site et répondeur maritime ainsi équipé. |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2721757B1 (fr) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1075325A (fr) * | 1953-02-04 | 1954-10-14 | Radio Ind | Perfectionnements aux structures d'aériens donnant un diagramme de rayonnement omnidirectionnel dans un plan |
US4479127A (en) * | 1982-08-30 | 1984-10-23 | Gte Products Corporation | Bi-loop antenna system |
FR2634598B1 (fr) * | 1988-07-22 | 1990-10-05 | Thomson Lgt | Antenne omnidirectionnelle, notamment pour l'emission de signaux de radiodiffusion ou de television dans la bande des ondes decimetriques, et systeme rayonnant forme d'un groupement de ces antennes |
DE3908893A1 (de) * | 1989-03-17 | 1990-09-20 | Siemens Ag | Ringstrahler in gedruckter schaltungstechnik |
FR2644937B1 (fr) * | 1989-03-22 | 1991-09-27 | Bourdier Jean | Antenne omnidirective en polarisation circulaire transversale a maximum de gain sous l'horizon |
-
1994
- 1994-06-28 FR FR9407944A patent/FR2721757B1/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2721757A1 (fr) | 1995-12-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |