GB9120954D0 - Antenna system - Google Patents

Antenna system

Info

Publication number
GB9120954D0
GB9120954D0 GB919120954A GB9120954A GB9120954D0 GB 9120954 D0 GB9120954 D0 GB 9120954D0 GB 919120954 A GB919120954 A GB 919120954A GB 9120954 A GB9120954 A GB 9120954A GB 9120954 D0 GB9120954 D0 GB 9120954D0
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.)
Withdrawn
Application number
GB919120954A
Other versions
GB2249873A (en
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.)
ERA Patents Ltd
Original Assignee
ERA Patents Ltd
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 ERA Patents Ltd filed Critical ERA Patents Ltd
Publication of GB9120954D0 publication Critical patent/GB9120954D0/en
Publication of GB2249873A publication Critical patent/GB2249873A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/02—Waveguide horns
    • H01Q13/025—Multimode horn antennas; Horns using higher mode of propagation
    • H01Q13/0258—Orthomode horns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/04—Multimode antennas
    • 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
    • H01Q3/36—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 variable phase-shifters
GB9120954A 1990-10-03 1991-10-02 Antenna system Withdrawn GB2249873A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909021460A GB9021460D0 (en) 1990-10-03 1990-10-03 Antenna system

Publications (2)

Publication Number Publication Date
GB9120954D0 true GB9120954D0 (en) 1991-11-27
GB2249873A GB2249873A (en) 1992-05-20

Family

ID=10683140

Family Applications (2)

Application Number Title Priority Date Filing Date
GB909021460A Pending GB9021460D0 (en) 1990-10-03 1990-10-03 Antenna system
GB9120954A Withdrawn GB2249873A (en) 1990-10-03 1991-10-02 Antenna system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB909021460A Pending GB9021460D0 (en) 1990-10-03 1990-10-03 Antenna system

Country Status (1)

Country Link
GB (2) GB9021460D0 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1573604A (en) * 1977-02-18 1980-08-28 Nat Res Dev Aerial arrays
US4810982A (en) * 1987-10-23 1989-03-07 Hughes Aircraft Company Coaxial transmission-line matrix including in-plane crossover
US4812788A (en) * 1987-11-02 1989-03-14 Hughes Aircraft Company Waveguide matrix including in-plane crossover

Also Published As

Publication number Publication date
GB9021460D0 (en) 1991-04-24
GB2249873A (en) 1992-05-20

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)