GB2253743B - Reflectors for electromagnetic radiation - Google Patents
Reflectors for electromagnetic radiationInfo
- Publication number
- GB2253743B GB2253743B GB8924828A GB8924828A GB2253743B GB 2253743 B GB2253743 B GB 2253743B GB 8924828 A GB8924828 A GB 8924828A GB 8924828 A GB8924828 A GB 8924828A GB 2253743 B GB2253743 B GB 2253743B
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflectors
- electromagnetic radiation
- electromagnetic
- radiation
- 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)
- Waveguide Aerials (AREA)
- Aerials With Secondary Devices (AREA)
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 |
---|---|
GB8924828D0 GB8924828D0 (en) | 1992-06-17 |
GB2253743A GB2253743A (en) | 1992-09-16 |
GB2253743B true GB2253743B (en) | 1993-09-01 |
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 Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8910937A Expired - Fee Related GB2254192B (en) | 1989-05-12 | 1989-05-12 | Antenna apparatus |
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 |
Family Cites Families (1)
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 |
-
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
Also Published As
Publication number | Publication date |
---|---|
GB2253743A (en) | 1992-09-16 |
GB8910937D0 (en) | 1992-06-17 |
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: 19931201 |