IT8747946A0 - Antenna con due superfici riflettenti e sub-reflettore dispiegabile - Google Patents
Antenna con due superfici riflettenti e sub-reflettore dispiegabileInfo
- Publication number
- IT8747946A0 IT8747946A0 IT8747946A IT4794687A IT8747946A0 IT 8747946 A0 IT8747946 A0 IT 8747946A0 IT 8747946 A IT8747946 A IT 8747946A IT 4794687 A IT4794687 A IT 4794687A IT 8747946 A0 IT8747946 A0 IT 8747946A0
- Authority
- IT
- Italy
- Prior art keywords
- reflector
- antenna
- reflective surfaces
- deployable sub
- deployable
- Prior art date
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
- 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
-
- 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
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
- H01Q15/161—Collapsible reflectors
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
- Details Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT47946/87A IT1205964B (it) | 1987-05-15 | 1987-05-15 | Antenna con due superfici riflettenti e sub-reflettore dispiegabile |
EP88107264A EP0290969A3 (en) | 1987-05-15 | 1988-05-06 | Unfoldable antenna with two reflecting surfaces |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT47946/87A IT1205964B (it) | 1987-05-15 | 1987-05-15 | Antenna con due superfici riflettenti e sub-reflettore dispiegabile |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8747946A0 true IT8747946A0 (it) | 1987-05-15 |
IT1205964B IT1205964B (it) | 1989-04-05 |
Family
ID=11263532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT47946/87A IT1205964B (it) | 1987-05-15 | 1987-05-15 | Antenna con due superfici riflettenti e sub-reflettore dispiegabile |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0290969A3 (it) |
IT (1) | IT1205964B (it) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3646564A (en) * | 1969-03-03 | 1972-02-29 | Raytheon Co | Antenna slew system |
FR2517626A1 (fr) * | 1981-12-04 | 1983-06-10 | Europ Agence Spatiale | Engin spatial orbital, notamment satellite, a missions multiples |
JPS6051004A (ja) * | 1983-08-30 | 1985-03-22 | Nec Corp | 人工衛星塔載用のパラボラアンテナ |
EP0152221A3 (en) * | 1984-02-09 | 1986-11-05 | THE GENERAL ELECTRIC COMPANY, p.l.c. | An earth terminal for satellite communication systems |
US4771293A (en) * | 1984-11-07 | 1988-09-13 | The General Electric Company P.L.C. | Dual reflector folding antenna |
-
1987
- 1987-05-15 IT IT47946/87A patent/IT1205964B/it active
-
1988
- 1988-05-06 EP EP88107264A patent/EP0290969A3/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP0290969A3 (en) | 1990-03-28 |
IT1205964B (it) | 1989-04-05 |
EP0290969A2 (en) | 1988-11-17 |
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