GB2254192B - Antenna apparatus - Google Patents
Antenna apparatusInfo
- Publication number
- GB2254192B GB2254192B GB8910937A GB8910937A GB2254192B GB 2254192 B GB2254192 B GB 2254192B GB 8910937 A GB8910937 A GB 8910937A GB 8910937 A GB8910937 A GB 8910937A GB 2254192 B GB2254192 B GB 2254192B
- 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.)
- Expired - Fee Related
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)
- Aerials With Secondary Devices (AREA)
- Waveguide Aerials (AREA)
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 GB8910937D0 (en) | 1992-06-17 |
GB2254192A GB2254192A (en) | 1992-09-30 |
GB2254192B true 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)
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 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2616911A1 (en) * | 1987-06-16 | 1988-12-23 | Thomson Cgr | Surface antenna for nuclear magnetic resonance imaging apparatus |
-
1989
- 1989-05-12 GB GB8910937A patent/GB2254192B/en not_active Expired - Fee Related
- 1989-11-03 GB GB8924828A patent/GB2253743B/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2616911A1 (en) * | 1987-06-16 | 1988-12-23 | Thomson Cgr | Surface antenna for nuclear magnetic resonance imaging apparatus |
Also Published As
Publication number | Publication date |
---|---|
GB2253743B (en) | 1993-09-01 |
GB8910937D0 (en) | 1992-06-17 |
GB8924828D0 (en) | 1992-06-17 |
GB2253743A (en) | 1992-09-16 |
GB2254192A (en) | 1992-09-30 |
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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 |