BE699829A - - Google Patents
Info
- Publication number
- BE699829A BE699829A BE699829DA BE699829A BE 699829 A BE699829 A BE 699829A BE 699829D A BE699829D A BE 699829DA BE 699829 A BE699829 A BE 699829A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/007—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device
-
- 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
- H01Q3/44—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 electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
- H01Q3/46—Active lenses or reflecting arrays
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/10—Polarisation diversity; Directional diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/204—Multiple access
- H04B7/2045—SS-FDMA, FDMA satellite switching
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radio Relay Systems (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US575006A US3406401A (en) | 1966-08-25 | 1966-08-25 | Communication satellite system |
Publications (1)
Publication Number | Publication Date |
---|---|
BE699829A true BE699829A (xx) | 1967-11-16 |
Family
ID=24298544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE699829D BE699829A (xx) | 1966-08-25 | 1967-06-13 |
Country Status (6)
Country | Link |
---|---|
US (1) | US3406401A (xx) |
BE (1) | BE699829A (xx) |
DE (1) | DE1591811C3 (xx) |
GB (1) | GB1182629A (xx) |
NL (1) | NL146653B (xx) |
SE (1) | SE348078B (xx) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3500411A (en) * | 1967-04-26 | 1970-03-10 | Rca Corp | Retrodirective phased array antenna for a spacecraft |
US3541553A (en) * | 1968-03-27 | 1970-11-17 | Rca Corp | Satellite communications systems |
US3711855A (en) * | 1969-10-15 | 1973-01-16 | Communications Satellite Corp | Satellite on-board switching utilizing space-division and spot beam antennas |
US3704463A (en) * | 1970-06-02 | 1972-11-28 | Us Navy | Direction finding antenna system |
US3852763A (en) * | 1970-06-08 | 1974-12-03 | Communications Satellite Corp | Torus-type antenna having a conical scan capability |
FR2148341B1 (xx) * | 1971-08-09 | 1977-01-28 | Thomson Csf | |
AU469466B2 (en) * | 1972-02-07 | 1976-02-12 | Commonwealth Scientific And Industrial Research Organization | Generation of scanning radio beams |
US3852765A (en) * | 1972-12-19 | 1974-12-03 | Itt | Spherical double reflector antenna |
US3881178A (en) * | 1973-04-03 | 1975-04-29 | Hazeltine Corp | Antenna system for radiating multiple planar beams |
US4105973A (en) * | 1976-10-15 | 1978-08-08 | Bell Telephone Laboratories, Incorporated | Multibeam, digitally modulated, time division, switched satellite communications system |
US4145658A (en) * | 1977-06-03 | 1979-03-20 | Bell Telephone Laboratories, Incorporated | Method and apparatus for cancelling interference between area coverage and spot coverage antenna beams |
US4163235A (en) * | 1977-08-29 | 1979-07-31 | Grumman Aerospace Corporation | Satellite system |
US4188578A (en) * | 1978-05-19 | 1980-02-12 | Bell Telephone Laboratories, Incorporated | Satellite communication system which concurrently transmits a scanning spot beam and a plurality of fixed spot beams |
US4236161A (en) * | 1978-09-18 | 1980-11-25 | Bell Telephone Laboratories, Incorporated | Array feed for offset satellite antenna |
DE3011187C2 (de) * | 1980-03-22 | 1984-08-02 | Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn | Satellitenantenne für die Kommunikation zwischen zwei Bodenstationen über einen Synchronsatelliten |
US4338608A (en) * | 1980-09-30 | 1982-07-06 | The United States Of America As Represented By The Secretary Of Commerce | Triple-beam offset paraboloidal antenna |
US4535338A (en) * | 1982-05-10 | 1985-08-13 | At&T Bell Laboratories | Multibeam antenna arrangement |
JPH0951293A (ja) * | 1995-05-30 | 1997-02-18 | Matsushita Electric Ind Co Ltd | 室内無線通信システム |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1128952A (fr) * | 1955-03-17 | 1957-01-14 | Materiel Telephonique | Antenne pour ondes ultra-courtes |
US3095538A (en) * | 1960-10-28 | 1963-06-25 | Silberstein Richard | Satellite relay station using antenna diversity selection |
US3317912A (en) * | 1963-07-29 | 1967-05-02 | Kenneth S Kelleher | Plural concentric parabolic antenna for omnidirectional coverage |
-
1966
- 1966-08-25 US US575006A patent/US3406401A/en not_active Expired - Lifetime
-
1967
- 1967-06-13 BE BE699829D patent/BE699829A/xx unknown
- 1967-06-30 SE SE09845/67*A patent/SE348078B/xx unknown
- 1967-07-04 DE DE1591811A patent/DE1591811C3/de not_active Expired
- 1967-07-28 NL NL676710481A patent/NL146653B/xx unknown
- 1967-08-10 GB GB36780/67A patent/GB1182629A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3406401A (en) | 1968-10-15 |
DE1591811C3 (de) | 1981-10-08 |
DE1591811A1 (de) | 1971-02-18 |
NL6710481A (xx) | 1968-02-26 |
SE348078B (xx) | 1972-08-21 |
DE1591811B2 (de) | 1974-10-03 |
NL146653B (nl) | 1975-07-15 |
GB1182629A (en) | 1970-02-25 |