CA2042543A1 - Methode et appareil de production de faisceaux de balayage multiples - Google Patents
Methode et appareil de production de faisceaux de balayage multiplesInfo
- Publication number
- CA2042543A1 CA2042543A1 CA2042543A CA2042543A CA2042543A1 CA 2042543 A1 CA2042543 A1 CA 2042543A1 CA 2042543 A CA2042543 A CA 2042543A CA 2042543 A CA2042543 A CA 2042543A CA 2042543 A1 CA2042543 A1 CA 2042543A1
- Authority
- CA
- Canada
- Prior art keywords
- beams
- earth
- frequency
- producing multiple
- beam formers
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title abstract 2
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
- H01Q3/22—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 orientation in accordance with variation of frequency of radiated wave
-
- 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
- H01Q3/26—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 relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/2682—Time delay steered arrays
- H01Q3/2694—Time delay steered arrays using also variable phase-shifters
-
- 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
- H04B7/2041—Spot beam multiple access
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radio Relay Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/551,824 US5081464A (en) | 1990-07-12 | 1990-07-12 | Method and apparatus for producing multiple, frequency-addressable scanning beams |
US551,824 | 1990-07-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2042543A1 true CA2042543A1 (fr) | 1992-01-13 |
CA2042543C CA2042543C (fr) | 1995-10-03 |
Family
ID=24202834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002042543A Expired - Fee Related CA2042543C (fr) | 1990-07-12 | 1991-05-14 | Methode et appareil de production de faisceaux de balayage multiples |
Country Status (5)
Country | Link |
---|---|
US (1) | US5081464A (fr) |
EP (1) | EP0466126B1 (fr) |
JP (1) | JP2887423B2 (fr) |
CA (1) | CA2042543C (fr) |
DE (1) | DE69121650T2 (fr) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0738610B2 (ja) * | 1993-03-01 | 1995-04-26 | 日本電気株式会社 | 周回衛星の送信装置 |
US5422647A (en) * | 1993-05-07 | 1995-06-06 | Space Systems/Loral, Inc. | Mobile communication satellite payload |
US5642358A (en) * | 1994-04-08 | 1997-06-24 | Ericsson Inc. | Multiple beamwidth phased array |
US6157343A (en) * | 1996-09-09 | 2000-12-05 | Telefonaktiebolaget Lm Ericsson | Antenna array calibration |
US5539415A (en) * | 1994-09-15 | 1996-07-23 | Space Systems/Loral, Inc. | Antenna feed and beamforming network |
US5734345A (en) * | 1996-04-23 | 1998-03-31 | Trw Inc. | Antenna system for controlling and redirecting communications beams |
US5771439A (en) * | 1996-05-20 | 1998-06-23 | Raytheon E-Systems, Inc. | Adaptive antenna system and method for cellular and personal communication systems |
US7339520B2 (en) * | 2000-02-04 | 2008-03-04 | The Directv Group, Inc. | Phased array terminal for equatorial satellite constellations |
US6388615B1 (en) * | 2000-06-06 | 2002-05-14 | Hughes Electronics Corporation | Micro cell architecture for mobile user tracking communication system |
US6756937B1 (en) | 2000-06-06 | 2004-06-29 | The Directv Group, Inc. | Stratospheric platforms based mobile communications architecture |
US6895217B1 (en) | 2000-08-21 | 2005-05-17 | The Directv Group, Inc. | Stratospheric-based communication system for mobile users having adaptive interference rejection |
US7257418B1 (en) | 2000-08-31 | 2007-08-14 | The Directv Group, Inc. | Rapid user acquisition by a ground-based beamformer |
US6941138B1 (en) | 2000-09-05 | 2005-09-06 | The Directv Group, Inc. | Concurrent communications between a user terminal and multiple stratospheric transponder platforms |
US7369847B1 (en) | 2000-09-14 | 2008-05-06 | The Directv Group, Inc. | Fixed cell communication system with reduced interference |
US6763242B1 (en) | 2000-09-14 | 2004-07-13 | The Directv Group, Inc. | Resource assignment system and method for determining the same |
US6388634B1 (en) | 2000-10-31 | 2002-05-14 | Hughes Electronics Corporation | Multi-beam antenna communication system and method |
US6891813B2 (en) * | 2000-12-12 | 2005-05-10 | The Directv Group, Inc. | Dynamic cell CDMA code assignment system and method |
US7181162B2 (en) * | 2000-12-12 | 2007-02-20 | The Directv Group, Inc. | Communication system using multiple link terminals |
US6952580B2 (en) | 2000-12-12 | 2005-10-04 | The Directv Group, Inc. | Multiple link internet protocol mobile communications system and method therefor |
US7400857B2 (en) * | 2000-12-12 | 2008-07-15 | The Directv Group, Inc. | Communication system using multiple link terminals |
US7103317B2 (en) | 2000-12-12 | 2006-09-05 | The Directv Group, Inc. | Communication system using multiple link terminals for aircraft |
US7809403B2 (en) | 2001-01-19 | 2010-10-05 | The Directv Group, Inc. | Stratospheric platforms communication system using adaptive antennas |
US8396513B2 (en) | 2001-01-19 | 2013-03-12 | The Directv Group, Inc. | Communication system for mobile users using adaptive antenna |
US7187949B2 (en) * | 2001-01-19 | 2007-03-06 | The Directv Group, Inc. | Multiple basestation communication system having adaptive antennas |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE792171A (fr) * | 1971-09-17 | 1973-06-01 | Int Standard Electric Corp | Antenne d'exploration de trame |
US3868695A (en) * | 1973-07-18 | 1975-02-25 | Westinghouse Electric Corp | Conformal array beam forming network |
US4431998A (en) * | 1980-05-13 | 1984-02-14 | Harris Corporation | Circularly polarized hemispheric coverage flush antenna |
JPS58114604A (ja) * | 1981-12-28 | 1983-07-08 | Mitsubishi Electric Corp | マルチビ−ム電子走査アンテナ |
JPS6154475A (ja) * | 1984-08-24 | 1986-03-18 | Toshiba Corp | アンテナ装置 |
US4972151A (en) * | 1985-10-01 | 1990-11-20 | Hughes Aircraft Company | Steered-beam satellite communication system |
US4879711A (en) * | 1986-08-14 | 1989-11-07 | Hughes Aircraft Company | Satellite communications system employing frequency reuse |
US4882588A (en) * | 1986-12-22 | 1989-11-21 | Hughes Aircraft Company | Steerable beam antenna system using butler matrix |
DE3788125T2 (de) * | 1986-12-22 | 1994-06-09 | Hughes Aircraft Co | Steuerbare strahlungskeule eines antennensystems mit butler-matrix. |
JP2939559B2 (ja) * | 1988-11-01 | 1999-08-25 | 東洋通信機株式会社 | デジタル温度補償発振器の初期化方法 |
JPH02123803A (ja) * | 1988-11-02 | 1990-05-11 | Mitsubishi Electric Corp | アンテナ装置 |
-
1990
- 1990-07-12 US US07/551,824 patent/US5081464A/en not_active Expired - Lifetime
-
1991
- 1991-05-14 CA CA002042543A patent/CA2042543C/fr not_active Expired - Fee Related
- 1991-07-10 EP EP91111454A patent/EP0466126B1/fr not_active Expired - Lifetime
- 1991-07-10 DE DE69121650T patent/DE69121650T2/de not_active Expired - Fee Related
- 1991-07-10 JP JP3170121A patent/JP2887423B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5081464A (en) | 1992-01-14 |
EP0466126A2 (fr) | 1992-01-15 |
CA2042543C (fr) | 1995-10-03 |
JPH04233804A (ja) | 1992-08-21 |
DE69121650T2 (de) | 1997-03-27 |
EP0466126A3 (en) | 1992-06-10 |
EP0466126B1 (fr) | 1996-08-28 |
DE69121650D1 (de) | 1996-10-02 |
JP2887423B2 (ja) | 1999-04-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |