GB8910937D0 - Antenna apparatus - Google Patents

Antenna apparatus

Info

Publication number
GB8910937D0
GB8910937D0 GB898910937A GB8910937A GB8910937D0 GB 8910937 D0 GB8910937 D0 GB 8910937D0 GB 898910937 A GB898910937 A GB 898910937A GB 8910937 A GB8910937 A GB 8910937A GB 8910937 D0 GB8910937 D0 GB 8910937D0
Authority
GB
United Kingdom
Prior art keywords
antenna apparatus
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.)
Granted
Application number
GB898910937A
Other versions
GB2254192A (en
GB2254192B (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.)
BAE Systems Electronics Ltd
Original Assignee
GEC Marconi Ltd
Marconi Co 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 GEC Marconi Ltd, Marconi Co Ltd filed Critical GEC Marconi Ltd
Priority to GB8910937A priority Critical patent/GB2254192B/en
Priority to GB8924828A priority patent/GB2253743B/en
Publication of GB8910937D0 publication Critical patent/GB8910937D0/en
Publication of GB2254192A publication Critical patent/GB2254192A/en
Application granted granted Critical
Publication of GB2254192B publication Critical patent/GB2254192B/en
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
    • H01Q3/44—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
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/364—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/148—Reflecting surfaces; Equivalent structures with means for varying the reflecting properties
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)
  • Aerials With Secondary Devices (AREA)
GB8910937A 1989-05-12 1989-05-12 Antenna apparatus Expired - Fee Related GB2254192B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8910937A GB2254192B (en) 1989-05-12 1989-05-12 Antenna apparatus
GB8924828A GB2253743B (en) 1989-05-12 1989-11-03 Reflectors for electromagnetic radiation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8910937A GB2254192B (en) 1989-05-12 1989-05-12 Antenna apparatus

Publications (3)

Publication Number Publication Date
GB8910937D0 true GB8910937D0 (en) 1992-06-17
GB2254192A GB2254192A (en) 1992-09-30
GB2254192B GB2254192B (en) 1994-01-12

Family

ID=10656636

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8910937A Expired - Fee Related GB2254192B (en) 1989-05-12 1989-05-12 Antenna apparatus
GB8924828A Expired - Fee Related GB2253743B (en) 1989-05-12 1989-11-03 Reflectors for electromagnetic radiation

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB8924828A Expired - Fee Related GB2253743B (en) 1989-05-12 1989-11-03 Reflectors for electromagnetic radiation

Country Status (1)

Country Link
GB (2) GB2254192B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9400974A (en) * 1994-06-15 1996-01-02 Hollandse Signaalapparaten Bv Adjustable Fresnel zone plate.
GB0323123D0 (en) * 2003-10-03 2003-11-05 Roke Manor Research Electronically steerable fresnel zone antenna
FR2965669B1 (en) * 2010-10-01 2012-10-05 Thales Sa BROADBAND ANTENNA REFLECTOR FOR CIRCULAR POLARIZED PLANE WIRE ANTENNA AND METHOD FOR PRODUCING THE ANTENNA DEFLECTOR
FR2965635B1 (en) * 2010-10-01 2013-09-27 Commissariat Energie Atomique HYPERFREQUENCY TELEMETER AND ASSOCIATED REFLECTOR EQUIPPED WITH AN INCLINOMETER

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2616911B1 (en) * 1987-06-16 1991-01-04 Thomson Cgr SURFACE ANTENNA FOR NUCLEAR MAGNETIC RESONANCE IMAGING APPARATUS

Also Published As

Publication number Publication date
GB2253743A (en) 1992-09-16
GB2253743B (en) 1993-09-01
GB2254192A (en) 1992-09-30
GB8924828D0 (en) 1992-06-17
GB2254192B (en) 1994-01-12

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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)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19980512