GB1268341A - Improvements in parabolic antennas - Google Patents
Improvements in parabolic antennasInfo
- Publication number
- GB1268341A GB1268341A GB33347/64D GB3334764D GB1268341A GB 1268341 A GB1268341 A GB 1268341A GB 33347/64 D GB33347/64 D GB 33347/64D GB 3334764 D GB3334764 D GB 3334764D GB 1268341 A GB1268341 A GB 1268341A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflector
- plane
- reflected
- incidence
- wires
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
- H01Q1/421—Means for correcting aberrations introduced by a radome
-
- 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
- H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
- H01Q15/12—Refracting or diffracting devices, e.g. lens, prism functioning also as polarisation filter
-
- 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
- H01Q15/22—Reflecting surfaces; Equivalent structures functioning also as polarisation filter
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/18—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces
- H01Q19/19—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
- H01Q19/195—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface wherein a reflecting surface acts also as a polarisation filter or a polarising device
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR946916 | 1963-09-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1268341A true GB1268341A (en) | 1972-03-29 |
Family
ID=8811967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33347/64D Expired GB1268341A (en) | 1963-09-09 | 1964-08-14 | Improvements in parabolic antennas |
Country Status (5)
Country | Link |
---|---|
US (1) | US3688311A (nl) |
DE (1) | DE1441642C3 (nl) |
FR (1) | FR1604514A (nl) |
GB (1) | GB1268341A (nl) |
NL (1) | NL138904B (nl) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2264006A (en) * | 1992-02-01 | 1993-08-11 | British Aerospace Space And Co | A reflector antenna assembly for dual linear polarisation. |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4145695A (en) * | 1977-03-01 | 1979-03-20 | Bell Telephone Laboratories, Incorporated | Launcher reflectors for correcting for astigmatism in off-axis fed reflector antennas |
US4339757A (en) * | 1980-11-24 | 1982-07-13 | Bell Telephone Laboratories, Incorporated | Broadband astigmatic feed arrangement for an antenna |
US4343004A (en) * | 1980-11-24 | 1982-08-03 | Bell Telephone Laboratories, Incorporated | Broadband astigmatic feed arrangement for an antenna |
US4535338A (en) * | 1982-05-10 | 1985-08-13 | At&T Bell Laboratories | Multibeam antenna arrangement |
US4491848A (en) * | 1982-08-30 | 1985-01-01 | At&T Bell Laboratories | Substantially frequency-independent aberration correcting antenna arrangement |
US4755826A (en) * | 1983-01-10 | 1988-07-05 | The United States Of America As Represented By The Secretary Of The Navy | Bicollimated offset Gregorian dual reflector antenna system |
US4574287A (en) * | 1983-03-04 | 1986-03-04 | The United States Of America As Represented By The Secretary Of The Navy | Fixed aperture, rotating feed, beam scanning antenna system |
US4769646A (en) * | 1984-02-27 | 1988-09-06 | United Technologies Corporation | Antenna system and dual-fed lenses producing characteristically different beams |
US4791427A (en) * | 1985-11-22 | 1988-12-13 | United Technologies Corporation | Multimode, multispectral antenna |
US6225961B1 (en) | 1999-07-27 | 2001-05-01 | Prc Inc. | Beam waveguide antenna with independently steerable antenna beams and method of compensating for planetary aberration in antenna beam tracking of spacecraft |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2846680A (en) * | 1946-06-29 | 1958-08-05 | Bell Telephone Labor Inc | Directive antennas |
US2790169A (en) * | 1949-04-18 | 1957-04-23 | Itt | Antenna |
US2736895A (en) * | 1951-02-16 | 1956-02-28 | Elliott Brothers London Ltd | High frequency radio aerials |
US2975419A (en) * | 1959-10-13 | 1961-03-14 | Newell H Brown | Microwave antenna reflector system for scanning by displacement of focal image |
-
1963
- 1963-09-09 FR FR946916A patent/FR1604514A/fr not_active Expired
-
1964
- 1964-08-14 GB GB33347/64D patent/GB1268341A/en not_active Expired
- 1964-08-19 US US391076A patent/US3688311A/en not_active Expired - Lifetime
- 1964-09-03 NL NL646410250A patent/NL138904B/nl not_active IP Right Cessation
- 1964-09-04 DE DE1441642A patent/DE1441642C3/de not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2264006A (en) * | 1992-02-01 | 1993-08-11 | British Aerospace Space And Co | A reflector antenna assembly for dual linear polarisation. |
GB2264006B (en) * | 1992-02-01 | 1995-09-27 | British Aerospace Space And Co | A reflector antenna assembly for dual linear polarisation |
US5581265A (en) * | 1992-02-01 | 1996-12-03 | Matra Marconi Space Uk Limited | Reflector antenna assembly for dual linear polarization |
Also Published As
Publication number | Publication date |
---|---|
NL6410250A (nl) | 1972-03-27 |
NL138904B (nl) | 1973-05-15 |
FR1604514A (nl) | 1971-11-29 |
DE1441642B2 (de) | 1974-03-28 |
DE1441642C3 (de) | 1979-08-30 |
US3688311A (en) | 1972-08-29 |
DE1441642A1 (de) | 1972-07-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3231892A (en) | Antenna feed system simultaneously operable at two frequencies utilizing polarization independent frequency selective intermediate reflector | |
US3271771A (en) | Double-reflector, double-feed antenna for crossed polarizations and polarization changing devices useful therein | |
US2422184A (en) | Directional microwave antenna | |
US2273447A (en) | Unidirective energy radiating system | |
US2840819A (en) | Reflecting surfaces | |
GB1268341A (en) | Improvements in parabolic antennas | |
US4260993A (en) | Dual-band antenna with periscopic supply system | |
GB1385737A (en) | Microwave antennas | |
US2870444A (en) | Radiating systems | |
US3332083A (en) | Cassegrain antenna with offset feed | |
US3102265A (en) | New aerial system radiating several beams | |
GB815178A (en) | Two-channel radio beam antenna arrangement | |
GB1236629A (en) | Bi-directional electronically scanned antenna system | |
US3158862A (en) | Wide-angle electrically-modulated reflector | |
US2103357A (en) | Ultrashort wave system | |
GB1172686A (en) | Antenna Adapted to Scanning over an Angular Space Portion. | |
US2169553A (en) | Directive radio system | |
GB978509A (en) | Improvements in and relating to aerials | |
US2160853A (en) | Reflector arrangement | |
US3364490A (en) | Variable beamwidth antennas utilizing defocusing | |
US2983918A (en) | Bilateral transmission system | |
US2483575A (en) | Directional microwave antenna | |
GB1025182A (en) | Improvements relating to radio lenses | |
US1944563A (en) | Directional radio beam system | |
GB976253A (en) | Improvements in or relating to aerial systems |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |