GB2326979B - Antenna system - Google Patents

Antenna system

Info

Publication number
GB2326979B
GB2326979B GB9821201A GB9821201A GB2326979B GB 2326979 B GB2326979 B GB 2326979B GB 9821201 A GB9821201 A GB 9821201A GB 9821201 A GB9821201 A GB 9821201A GB 2326979 B GB2326979 B GB 2326979B
Authority
GB
United Kingdom
Prior art keywords
antenna system
antenna
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 - Lifetime
Application number
GB9821201A
Other versions
GB9821201D0 (en
GB2326979A (en
Inventor
Samuel Munoz-Garcia
Shinichi Nomoto
Peter Poskett
Dennis Mullins
Ben Hutchinson
Patrick Chomet
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.)
International Mobile Satellite Organization
Original Assignee
International Mobile Satellite Organization
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 International Mobile Satellite Organization filed Critical International Mobile Satellite Organization
Priority to GB9821201A priority Critical patent/GB2326979B/en
Priority claimed from GB9815693A external-priority patent/GB2324912B/en
Publication of GB9821201D0 publication Critical patent/GB9821201D0/en
Publication of GB2326979A publication Critical patent/GB2326979A/en
Application granted granted Critical
Publication of GB2326979B publication Critical patent/GB2326979B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H01Q1/288—Satellite antennas
    • 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
    • H01Q21/22—Antenna units of the array energised non-uniformly in amplitude or phase, e.g. tapered array or binomial array
    • 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
    • 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
    • H01Q3/30—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 varying the relative phase between the radiating elements of an array
    • H01Q3/34—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 varying the relative phase between the radiating elements of an array by electrical means
    • H01Q3/40—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 varying the relative phase between the radiating elements of an array by electrical means with phasing matrix
    • 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)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
GB9821201A 1994-04-18 1994-04-18 Antenna system Expired - Lifetime GB2326979B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9821201A GB2326979B (en) 1994-04-18 1994-04-18 Antenna system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9821201A GB2326979B (en) 1994-04-18 1994-04-18 Antenna system
GB9815693A GB2324912B (en) 1994-04-18 1994-04-18 Beam-forming network

Publications (3)

Publication Number Publication Date
GB9821201D0 GB9821201D0 (en) 1998-11-25
GB2326979A GB2326979A (en) 1999-01-06
GB2326979B true GB2326979B (en) 1999-02-24

Family

ID=10835771

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9821201A Expired - Lifetime GB2326979B (en) 1994-04-18 1994-04-18 Antenna system

Country Status (1)

Country Link
GB (1) GB2326979B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2954634B1 (en) * 2009-12-18 2012-02-24 Thales Sa SYSTEM FOR TRANSMITTING AND RECEIVING MULTI-SPOTS OF A SATELLITE AND SATELLITE COMPRISING SUCH A SYSTEM

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3979754A (en) * 1975-04-11 1976-09-07 Raytheon Company Radio frequency array antenna employing stacked parallel plate lenses
US4424500A (en) * 1980-12-29 1984-01-03 Sperry Corporation Beam forming network for a multibeam antenna

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3979754A (en) * 1975-04-11 1976-09-07 Raytheon Company Radio frequency array antenna employing stacked parallel plate lenses
US4424500A (en) * 1980-12-29 1984-01-03 Sperry Corporation Beam forming network for a multibeam antenna

Also Published As

Publication number Publication date
GB9821201D0 (en) 1998-11-25
GB2326979A (en) 1999-01-06

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)