CA2042543A1 - Methode et appareil de production de faisceaux de balayage multiples - Google Patents

Methode et appareil de production de faisceaux de balayage multiples

Info

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
Application number
CA2042543A
Other languages
English (en)
Other versions
CA2042543C (fr
Inventor
Kenneth H. Renshaw
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DirecTV Group Inc
Original Assignee
Hughes Aircraft Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hughes Aircraft Co filed Critical Hughes Aircraft Co
Publication of CA2042543A1 publication Critical patent/CA2042543A1/fr
Application granted granted Critical
Publication of CA2042543C publication Critical patent/CA2042543C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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)
CA002042543A 1990-07-12 1991-05-14 Methode et appareil de production de faisceaux de balayage multiples Expired - Fee Related CA2042543C (fr)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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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